国外特效网站,企业产品做哪个网站推广好,佛山高端外贸网站建设,中国建设银行广西分行网站首页文章目录 参数连接halcon 自带案例1#xff08;设置校验位识别条码#xff09;Halcon 自带案例2#xff08;设置对比度识别条码#xff09;Halcon 自带案例3#xff08;存在曲面变形#xff09;Halcon 自带案例4#xff08;设置条码扫描线#xff09;Halcon 自带案例5设置校验位识别条码Halcon 自带案例2设置对比度识别条码Halcon 自带案例3存在曲面变形Halcon 自带案例4设置条码扫描线Halcon 自带案例5一维码阈值Halcon Codabar编码案例Halcon Code128编码案例Halcon 符合编码案例Halcon 当条码被遮挡的情况下Halcon 检测条码绘制条码矩形 decode_bar_code_rectangle2halcon 设置条码的高度和宽度案例 参数连接
一维码识别算子
halcon 自带案例1设置校验位识别条码 ctrl e 选择 一维码的第一个案例 set_bar_code_param (BarCodeHandle, ‘check_char’, ‘present\absent’)设置条码是否检查校验位 *check_char 是否验证校验位(present是 absent 否)
*composite_code 附加一个二维条码构成组合码
*element_height_min 最小条码的高度
*element_size_max 条码最大尺寸(宽度和间距)
*element_size_min 条码最小尺寸(宽度和间距)
*max_diff_orient 相邻边缘方向的最大角度容差
*meas_thresh 用来识别条码边沿一般取值[0.05,0.2]
*meas_thresh_abs
*min_identical_scanlines 认定成功解码所需的最少扫描线数默认为1
*num_scanlines 条码扫描的最大数目
*orientation 条码方向(度)
*orientation_tol 条码方向容差(度)
*persistence 保存解码的中间结果
*start_stop_tolerance 当检测扫描线的起点和终点图案时用该语句设置容许误差
*stop_after_result_num 设置要解码的条码条数
*upce_encodation 用以不同的输出格式(UPC-E码)
*timeout 检测超时
*train 训练
*quiet_zone
*slanted 对倾斜条码额外处理* Read bar codes of type 2/5 Industrial
*这是创建一个空的条码模型并将其存储在变量BarCodeHandle中。该模型可以用于设置和调整条码参数。
create_bar_code_model ([], [], BarCodeHandle)
* We expect to decode a single bar code per image
*此代码行设置读取图像时停止的结果数量。在本例中我们只需要读取一个条码因此此参数设置为1。
set_bar_code_param (BarCodeHandle, stop_after_result_num, 1)* Some codes show a minimal code length of 1 digit. Hence, we need to decrease the
* default setting for this application.
*此代码行设置具体条码类型的参数。在本例中‘2/5 Industrial’条码类型的最小长度被设置为1。
set_bar_code_param_specific (BarCodeHandle, 2/5 Industrial, min_code_length, 1)
* Note, that this is not recommended in real world applications due to the possibility
* of more false reads.dev_close_window ()
dev_open_window (0, 0, 120, 300, black, WindowHandle)
set_display_font (WindowHandle, 14, mono, true, false)
dev_set_draw (margin)
dev_set_line_width (3)
for I : 1 to 4 by 1read_image (Image, barcode/25industrial/25industrial0 I)get_image_size (Image, Width, Height)dev_set_window_extents (0, 0, Width - 1, Height - 1)dev_display (Image)dev_set_color (green)* Read bar code, the resulting string includes the check character*不检查校验位的情况*设置条码参数不检查校验位。set_bar_code_param (BarCodeHandle, check_char, absent)*寻找图像中的条码并将解码结果存储在变量DecodedDataStrings中。此处使用了2/5 Industrial条码类型。find_bar_code (Image, SymbolRegions, BarCodeHandle, 2/5 Industrial, DecodedDataStrings)*在窗口中显示解码结果颜色为黑色。disp_message (WindowHandle, DecodedDataStrings, window, 12, 12, black, false)*获取解码结果的长度并将其存储在变量LastChar中。LastChar : strlen(DecodedDataStrings) - 1*在窗口中显示解码结果的最后一个字符并将其颜色设置为森林绿。disp_message (WindowHandle, sum(gen_tuple_const(LastChar, )) DecodedDataStrings{LastChar}, window, 12, 12, forest green, false)stop ()* Read bar code using the check character to check the result, i.e.,* the check character does not belong to the returned string anymore.* If the check character is not correct, the bar code reading failsdev_set_color (green)
*检查校验位的情况*设置条码参数检查校验位set_bar_code_param (BarCodeHandle, check_char, present)*再次寻找图像中的条码并将解码结果存储在变量DecodedDataStrings中。此处同样使用了2/5 Industrial条码类型。find_bar_code (Image, SymbolRegions, BarCodeHandle, 2/5 Industrial, DecodedDataStrings)*在窗口中显示重新解码得到的结果颜色为黑色。disp_message (WindowHandle, DecodedDataStrings, window, 36, 12, black, false)dev_set_color (magenta)if (I 4)stop ()endif
endforHalcon 自带案例2设置对比度识别条码 设置条码的对比度来减少运行的时间增加正确性通过改变set_bar_code_param (BarCodeHandle, ‘contrast_min’, ContrastMinValue) 的值设置对比度计算时间并且增加识别的正确率 ContrastMinValue :0的的情况下识别到一维码的个数 * Example program for the usage of the bar code parameter
* contrast_min.
*
* This parameter can be used to reduce the runtime of find_bar_code
* in the presence of a low contrast bar-like structures in an image.
* Moreover contrast_min can also be used to reduce the number of
* false positives if the expected barcodes have high contrast.
*
* Create bar code reader model
create_bar_code_model ([], [], BarCodeHandle)
*
* Initialization
dev_update_off ()
dev_close_window ()
*
* Read and display example images without any visible bar codes
read_image (Image, barcode/25interleaved/25interleaved_zeiss1)
*
* Set display defaults
dev_open_window_fit_image (Image, 0, 0, 600, 500, WindowHandle)
dev_display (Image)
dev_set_draw (margin)
set_display_font (WindowHandle, 14, mono, true, false)
get_window_extents (WindowHandle, Row, Column, Width, Height)
dev_open_window (0, Width 5, 400, 300, white, WindowHandleText)
set_display_font (WindowHandleText, 14, mono, true, false)
*
* Display information about the example
Message[0] : This example demonstrates the use of the bar code parameter \contrast_min\.
Message[1] :
Message[2] : The parameter \contrast_min\ can be used to reduce the runtime of find_bar_code in the presence of low contrast bar-like structures in an image. Moreover \contrast_min\ can also be used to reduce the number of false positives in applications where the expected barcodes have a high contrast.
MessageWrapped : regexp_replace(Message ,[(.{0,35})\\s,replace_all],$1\n)
disp_message (WindowHandleText, MessageWrapped, window, 12, 12, black, false)
disp_continue_message (WindowHandle, black, true)
stop ()
dev_set_window (WindowHandle)
dev_clear_window ()
dev_display (Image)* 首先将contrast_min参数设置为默认值0并执行find_bar_code函数记录运行时间
* Number of repetitions for runtime measurements(运行时测量的次数)
NumRepeat : 100
*
* First, set the minimum contrast of the bar code candidate regions
* to 0 (default)
ContrastMinValue : 0
*set_bar_code_param (条形码读取器模型的句柄, 要设置的参数名称, 参数的值)
set_bar_code_param (BarCodeHandle, contrast_min, ContrastMinValue)
*
* The bar code reader finds many bar code candidate regions that have
* a low absolute contrast
Times : []
for I : 0 to NumRepeat by 1count_seconds (Start)*查找条形码find_bar_code (Image, SymbolRegions, BarCodeHandle, 2/5 Interleaved, DecodedDataStrings)count_seconds (End)Time : End - StartTimes : [Times,Time]
endfor
RunTimeContrastMinLow : 1000 * median(Times)
* Get candidate regions and display results(选取区域并显示结果)
*访问在条码符号搜索或解码过程中创建的标志性对象。
get_bar_code_object (BarCodeObjects, BarCodeHandle, all, candidate_regions)
count_obj (BarCodeObjects, Number)
dev_set_color (red)
dev_set_line_width (5)
dev_display (BarCodeObjects)
dev_set_window (WindowHandleText)
dev_clear_window ()
Message : [\contrast_min\ ContrastMinValue :, Found Number candidate(s) in (RunTimeContrastMinLow$.4) ms]
disp_message (WindowHandleText, Message, window, 12, 12, , false)
*
* Now, set the bar code reader parameter contrast_min to a value
* greater than 0.0 to consider only candidates having an absolute
* contrast of at least that value.
*将contrast_min参数设置为大于0的值并再次执行find_bar_code函数记录运行时间
ContrastMinValue : 120
set_bar_code_param (BarCodeHandle, contrast_min, ContrastMinValue)
*
* Search again for bar codes. Now, a significantly smaller number of
* candidates should be found, and the overall runtime should be reduced.
Times : []
for I : 0 to NumRepeat by 1count_seconds (Start)find_bar_code (Image, SymbolRegions, BarCodeHandle, 2/5 Interleaved, DecodedDataStrings)count_seconds (End)Time : End - StartTimes : [Times,Time]
endfor
RunTimeContrastMinHigh : 1000 * median(Times)
* Get candidate regions and display results
dev_set_window (WindowHandle)
get_bar_code_object (BarCodeObjects, BarCodeHandle, all, candidate_regions)
count_obj (BarCodeObjects, Number)
dev_set_color (forest green)
dev_set_line_width (3)
dev_display (BarCodeObjects)
smallest_rectangle1 (SymbolRegions, Row1, Column1, Row2, Column2)
get_bar_code_result (BarCodeHandle, all, decoded_types, DecodedTypes)
disp_message (WindowHandle, DecodedTypes \n DecodedDataStrings, image, Row1, Column2 20, black, true)
dev_set_window (WindowHandleText)
Message : [\contrast_min\ ContrastMinValue :, Found Number candidate(s) in (RunTimeContrastMinHigh$.4) ms]
disp_message (WindowHandleText, Message, window, 62, 12, forest green, false)
Message : Setting \contrast_min\ to a higher value typically results in a faster execution and in fewer false positives.
MessageWrapped : regexp_replace(Message ,[(.{0,35})\\s,replace_all],$1\n)
disp_message (WindowHandleText, MessageWrapped, window, 122, 12, black, false)Halcon 自带案例3存在曲面变形 分别设置set_bar_code_param (BarCodeHandle, ‘element_size_variable’, ‘false\true’) 对于条形码不变形的情况下element_size_variable的情况 条形码扭曲变形的情况下 * This example demonstrates how to use the bar code parameter
* element_size_variable if surface deformations are present.
*
* To illustrate the effect of the parameter, both decoding results
* are shown in contrast. It is shown that, under cylindrical
* surface deformation, setting the bar code parameter to true
* will lead to successful decoding.
* ****************************************************************
*
* Initialization
dev_update_off ()
dev_close_window ()
*
* Create two bar code model with different element_size_variable values
create_bar_code_model ([], [], BarCodeHandle)
set_bar_code_param (BarCodeHandle, element_size_variable, false)
create_bar_code_model ([], [], BarCodeHandleVarSize)
set_bar_code_param (BarCodeHandleVarSize, element_size_variable, true)
CodeTypes : [GS1 DataBar Limited,GS1 DataBar Expanded,GS1 DataBar Expanded Stacked]
*
* Prepare graphics window
read_image (Image, barcode/gs1databar_limited/gs1databar_limited_no_deform)
dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
set_display_font (WindowHandle, 16, mono, true, false)
*
* Define bar code region
DecodeRectRow : 315
DecodeRectColumn : 490
DecodeRectPhi : 0
DecodeRectLength1 : 410
DecodeRectLength2 : 200
*
* Part 1
* Read bar code without distortions
*
* Decode the bar code with default setting
decode_bar_code_rectangle2 (Image, BarCodeHandle, CodeTypes, DecodeRectRow, DecodeRectColumn, DecodeRectPhi, DecodeRectLength1, DecodeRectLength2, DecodedDataStrings)
get_bar_code_object (SymbolRegions, BarCodeHandle, all, symbol_regions)
*
* Allow variable element sizes (element_size_variable true)
decode_bar_code_rectangle2 (Image, BarCodeHandleVarSize, CodeTypes, DecodeRectRow, DecodeRectColumn, DecodeRectPhi, DecodeRectLength1, DecodeRectLength2, DecodedDataStringsVarSize)
get_bar_code_object (SymbolRegionsVarSize, BarCodeHandleVarSize, all, symbol_regions)
*
* Display results
Message : If the bar code is not deformed, it is found with default settings.
Message[1] : Setting \element_size_variable\ to \true\ is not necessary.
display_results (Image, SymbolRegions, SymbolRegionsVarSize, WindowHandle, DecodedDataStrings, DecodedDataStringsVarSize, Message)
disp_continue_message (WindowHandle, black, true)
stop ()
*
* Part 2
* Read distorted bar code
*
read_image (Image, barcode/gs1databar_limited/gs1databar_limited_cylinder)
*
* Use default setting
decode_bar_code_rectangle2 (Image, BarCodeHandle, CodeTypes, DecodeRectRow, DecodeRectColumn, DecodeRectPhi, DecodeRectLength1, DecodeRectLength2, DecodedDataStrings)
get_bar_code_object (SymbolRegions, BarCodeHandle, all, symbol_regions)
* Use element_size_variable true
decode_bar_code_rectangle2 (Image, BarCodeHandleVarSize, CodeTypes, DecodeRectRow, DecodeRectColumn, DecodeRectPhi, DecodeRectLength1, DecodeRectLength2, DecodedDataStringsVarSize)
get_bar_code_object (SymbolRegionsVarSize, BarCodeHandleVarSize, all, symbol_regions)
*
* Display results
Message : If the bar code is bended, the code will only be read with
Message[1] : \element_size_variable\ set to \true\.
display_results (Image, SymbolRegions, SymbolRegionsVarSize, WindowHandle, DecodedDataStrings, DecodedDataStringsVarSize, Message)Halcon 自带案例4设置条码扫描线 设置扫描线set_bar_code_param (BarCodeHandle, ‘majority_voting’, MajorityVotingSetting) 当MajorityVotingSetting为false的情况 当MajorityVotingSetting为true的情况 * This example program shows the effect of the bar code
* parameter majority_voting.
*
* The bar code reader analyses multiple scanlines and tries
* to decode them. By default, this process is terminated as soon
* as one scanline can be decoded successfully. In some cases,
* the result derived from this scanline may be wrong due to
* local printing errors.
*
* If the parameter majority_voting is set to true, all
* scanlines are analysed. The final reading result is then
* determined by a majority voting of all successful decoding
* results.
*
* Prepare visualization settings and objects
dev_update_off ()
dev_close_window ()
read_image (Image, barcode/ean13/ean13_label)
get_image_size (Image, WidthI, HeightI)
dev_open_window_fit_image (Image, 0, 0, 600, 500, WindowHandle)
dev_display (Image)
dev_set_draw (margin)
set_display_font (WindowHandle, 14, mono, true, false)
get_window_extents (WindowHandle, Row, Column, Width, Height)
WindowZoomFactor : real(WidthI) / Width
dev_open_window (0, Width 5, 400, 300, white, WindowHandleText)
set_display_font (WindowHandleText, 14, mono, true, false)
*
* Create bar code reader model
create_bar_code_model ([], [], BarCodeHandle)
*
* PART I, read bar code without majority voting
MajorityVotingSetting : false
set_bar_code_param (BarCodeHandle, majority_voting, MajorityVotingSetting)
* 持久性模型设置
set_bar_code_param (BarCodeHandle, persistence, 1)
* 定义条码阈值
set_bar_code_param (BarCodeHandle, meas_thresh, 0.1)
* 防止meas_thresh参数出现错误检测
set_bar_code_param (BarCodeHandle, meas_thresh_abs, 30)
*
* Perform decoding and prepare results
dev_set_window (WindowHandle)
* 直接扫描所提供的区域以寻找条形码
decode_bar_code_rectangle2 (Image, BarCodeHandle, EAN-13, 280, 223, 3.14125 / 2.0, 200, 50, DecodedDataStrings)
*得到解码区域
get_bar_code_object (SymbolRegion, BarCodeHandle, all, symbol_regions)
*得到解码类型
get_bar_code_result (BarCodeHandle, all, decoded_types, DecodedTypes)
*得到解析条码的字符串结果
get_bar_code_result (BarCodeHandle, all, decoded_strings, DecodedData)
*访问在条码符号搜索或解码过程中创建的标志性对象
get_bar_code_object (ValidScanlines, BarCodeHandle, all, scanlines_valid)
get_majority_voting_example_symbols (SymbolRegion, ValidScanlines, DecodedData, BarCodeHandle, DecodedTypes, DecodedData)
* 选中某一个连通域
select_obj (ValidScanlines, FirstScanline, 5)
*
* Display results and labels
disp_message (WindowHandle, [Looking for bar codes,\majority_voting\ \ MajorityVotingSetting \], window, 12, 12, black, true)
ColorsText : [forest green,red]
dev_set_line_width (2)
smallest_rectangle1 (SymbolRegion, Row1, Column1, Row2, Column2)
dev_set_color (red)
dev_display (SymbolRegion)
dev_display (FirstScanline)
*
Message : [Codetype: ,Data: ] [DecodedTypes,DecodedData]
disp_message (WindowHandle, Message, image, Row1 - 40 * WindowZoomFactor, Column2 - 100, ColorsText[1], true)
*
* Display description
Message : By default \majority_voting\ is set to \false\.
Message[1] :
Message[2] : If the parameter \majority_voting\ is set to \false\, the reading result is set to the decoding result of the first scanline that could be decoded.
Message[3] :
Message[4] : Here, an \EAN-13\ code is detected wrongly inside of another \EAN-13\ because of a printing error.
MessageWrapped : regexp_replace(Message ,[(.{0,35})\\s,replace_all],$1\n)
disp_message (WindowHandleText, MessageWrapped, window, 12, 12, black, false)
disp_continue_message (WindowHandle, black, true)
stop ()
*
* PART II, enable majority voting
*
MajorityVotingSetting : true
set_bar_code_param (BarCodeHandle, majority_voting, MajorityVotingSetting)
*
* Perform decoding and prepare results
decode_bar_code_rectangle2 (Image, BarCodeHandle, EAN-13, 280, 223, 3.14125 / 2.0, 200, 50, DecodedDataStrings)
get_bar_code_object (SymbolRegion, BarCodeHandle, all, symbol_regions)
get_bar_code_result (BarCodeHandle, all, decoded_types, DecodedTypes)
get_bar_code_result (BarCodeHandle, all, decoded_strings, DecodedData)
get_bar_code_object (ValidScanlines, BarCodeHandle, all, scanlines_valid)
* 选取 1-4,6,7根线
select_obj (ValidScanlines, MajorityScanlines, [[1:4],6,7])
*
* Display results and labels
dev_display (Image)
disp_message (WindowHandle, [Looking for bar codes,\majority_voting\ \ MajorityVotingSetting \], window, 12, 12, black, true)
dev_set_draw (margin)
dev_set_color (green)
dev_set_line_width (2)
smallest_rectangle1 (SymbolRegion, Row1, Column1, Row2, Column2)
dev_display (SymbolRegion)
dev_display (MajorityScanlines)
Message : [Codetype: ,Data: ] [DecodedTypes,DecodedData]
disp_message (WindowHandle, Message, image, Row1 - 40 * WindowZoomFactor, Column2 - 100, forest green, true)
*
* Display description
dev_set_window (WindowHandleText)
Message : If majority voting is enabled, the bar code reader uses a majority voting scheme to determine the reading results. It returns the result that has been decoded from the majority of all scanlines.
Message[1] :
Message[2] : Here, the correct \EAN-13\ code is found.
MessageWrapped : regexp_replace(Message ,[(.{0,35})\\s,replace_all],$1\n)
dev_clear_window ()
disp_message (WindowHandleText, MessageWrapped, window, 12, 12, black, false)Halcon 自带案例5一维码阈值 通过改变set_bar_code_param (BarCodeHandle, ‘meas_thresh_abs’, MeasThreshAbsValue) 的阈值来提高识别的准确度 * Example program for the usage of the bar code parameter
* meas_thresh_abs.
* This parameter can be used to reduce the number of false
* positives when finding bar code symbol regions which we expect
* to have a high contrast. To artificially demonstrate this we
* try to find the bar code type PharmaCode that has no check
* character and therefore is recognized very easily within
* noise. As noise we use images that do not contain any bar
* codes at all.
* By using meas_thresh_abs with a value greater than 0.0 we
* force the bar code reader to use only the parts of a scanline
* with an absolute contrast of at least that value and thus
* reduce the number of false positives.
*
* Create bar code reader model
create_bar_code_model ([], [], BarCodeHandle)
*
* Initialization
dev_update_var (off)
dev_update_pc (off)
dev_update_window (off)
dev_close_window ()
dev_open_window (0, 0, 512, 512, black, WindowHandle)
set_display_font (WindowHandle, 14, mono, true, false)
dev_set_draw (margin)
dev_set_line_width (3)
*
* Read and display example images without any visible bar codes
ExampleImages : [zeiss1,patras,fabrik]
for Index : 0 to |ExampleImages| - 1 by 1FileName : ExampleImages[Index]read_image (Image, FileName)rgb1_to_gray (Image, Image)* * Set display defaultsget_image_size (Image, Width, Height)dev_set_window_extents (-1, -1, Width, Height)dev_display (Image)* * First, disable absolute thresholds by setting the value 0.0* for the parameter meas_thresh_absMeasThreshAbsValue : 0.0set_bar_code_param (BarCodeHandle, meas_thresh_abs, MeasThreshAbsValue)* * The bar code reader finds many (wrong) potential bar codes using* scanlines that have a low absolute contrastfind_bar_code (Image, SymbolRegions, BarCodeHandle, PharmaCode, DecodedDataStrings)dev_set_color (red)dev_display (SymbolRegions)disp_message (WindowHandle, [Found |DecodedDataStrings| potential bar codes, with parameter meas_thresh_abs MeasThreshAbsValue], window, 12, 12, , true)disp_continue_message (WindowHandle, black, true)stop ()* * Now, set the bar code reader parameter meas_thresh_abs to a value* greater than 0.0 to use only parts of a scanline having an absolute* contrast of at least that value.MeasThreshAbsValue : 10.0set_bar_code_param (BarCodeHandle, meas_thresh_abs, MeasThreshAbsValue)* * Look again for a bar code. Now, significant less scanlines should be found.find_bar_code (Image, SymbolRegions, BarCodeHandle, PharmaCode, DecodedDataStrings)dev_set_color (lime green)dev_display (SymbolRegions)disp_message (WindowHandle, [Found |DecodedDataStrings| potential bar codes, with parameter meas_thresh_abs MeasThreshAbsValue], window, 5 * 12, 12, , true)disp_continue_message (WindowHandle, black, true)stop ()
endfor阈值为0 阈值为10 Halcon Codabar编码案例 find_bar_code (Image, SymbolRegions, BarCodeHandle, ‘Codabar’, DecodedDataStrings) * Read bar codes of type Codabar
*
create_bar_code_model ([], [], BarCodeHandle)
* We expect to decode a single bar code per image
set_bar_code_param (BarCodeHandle, stop_after_result_num, 1)
dev_close_window ()
dev_open_window (0, 0, 120, 300, black, WindowHandle)
dev_set_color (green)
dev_set_draw (margin)
dev_set_line_width (3)
set_display_font (WindowHandle, 14, mono, true, false)
for I : 1 to 6 by 1read_image (Image, barcode/codabar/codabar (I$.2))get_image_size (Image, Width, Height)dev_set_window_extents (0, 0, Width - 1, Height - 1)dev_display (Image)set_bar_code_param (BarCodeHandle, check_char, present)find_bar_code (Image, SymbolRegions, BarCodeHandle, Codabar, DecodedDataStrings)disp_message (WindowHandle, DecodedDataStrings, window, 12, 12, black, false)LastChar : strlen(DecodedDataStrings) - 1disp_message (WindowHandle, DecodedDataStrings{0} sum(gen_tuple_const(LastChar - 1, )) DecodedDataStrings{LastChar}, window, 12, 12, forest green, false)if (I 6)stop ()endif
endforHalcon Code128编码案例 find_bar_code (Image, SymbolRegions, BarCodeHandle, ‘Code 128’, DecodedDataStrings) 改变的参数 * Read bar codes of type Code 128
*
create_bar_code_model ([], [], BarCodeHandle)
dev_close_window ()
dev_open_window (0, 0, 600, 600, black, WindowHandle)
set_display_font (WindowHandle, 16, mono, true, false)
dev_set_draw (margin)
dev_set_color (green)
dev_set_line_width (3)
for I : 1 to 3 by 1read_image (Image, barcode/code128/code128 (I$.2))dev_resize_window_fit_image (Image, 0, 0, -1, -1)find_bar_code (Image, SymbolRegions, BarCodeHandle, Code 128, DecodedDataStrings)get_bar_code_result (BarCodeHandle, 0, decoded_reference, Reference)String : for J : 0 to strlen(DecodedDataStrings) - 1 by 1if (ord(DecodedDataStrings{J}) 32)Char : \\x ord(DecodedDataStrings{J})$02xelseChar : DecodedDataStrings{J}endifString : String Charendfordisp_message (WindowHandle, String, window, 12, 12, black, true)if (I 3)disp_continue_message (WindowHandle, black, true)stop ()endif
endforHalcon 符合编码案例 set_bar_code_param (BarCodeHandle, ‘composite_code’, ‘CC-A/B’) 设置为复合码 *
* This program demonstrates the decoding of GS1 DataBar bar
* codes with Composite component
*
dev_close_window ()
dev_open_window (0, 0, 512, 512, black, WindowHandle)
set_display_font (WindowHandle, 14, mono, true, false)
*
ScaleWindow : 1.0
*
dev_set_draw (margin)
dev_set_color (green)
dev_set_line_width (3)
*
create_bar_code_model ([], [], BarCodeHandle)
set_bar_code_param (BarCodeHandle, composite_code, CC-A/B)
*
set_bar_code_param (BarCodeHandle, element_size_min, 1.5)
*
TestParams : []
TestParams : [TestParams,gs1databar_stacked_composite_01,GS1 DataBar Stacked]
TestParams : [TestParams,gs1databar_limited_composite_01,GS1 DataBar Limited]
TestParams : [TestParams,gs1databar_limited_composite_02,GS1 DataBar Limited]
TestParams : [TestParams,gs1databar_expanded_composite_01,GS1 DataBar Expanded]
*
*
for I : 0 to |TestParams| - 2 by 2File : barcode/gs1databar_composite/ TestParams[I]CodeType : TestParams[I 1]* read_image (Image, File)get_image_size (Image, Width, Height)dev_set_window_extents (0, 0, ScaleWindow * Width, ScaleWindow * Height)disp_message (WindowHandle, Barcode Type: CodeType, window, 12, 12, black, true)* find_bar_code (Image, SymbolRegions, BarCodeHandle, CodeType, DecodedDataStrings)* get_bar_code_result (BarCodeHandle, all, decoded_strings, DecodedStrings)get_bar_code_result (BarCodeHandle, all, composite_strings, CompositeStrings)disp_message (WindowHandle, DecodedStrings \nComposite: CompositeStrings, image, 36, 12, black, true)if (I |TestParams| - 2)disp_continue_message (WindowHandle, black, true)stop ()endif
endforHalcon 当条码被遮挡的情况下 *
* This program demonstrates visualization of bar code scanlines.
* This visualization can be used to inspect the quality of images, where
* occlusions or print defects might prevent the bar code reader from
* successfully decoding the underlying bar code.
*
* With scanlines_all all scanlines that the bar code reader would
* eventually use to decode a candidate bar code (here, colored in red).
* With scanlines_valid are visualized all scanlines that can be decoded
* as well (here, colored in green)
*
dev_update_off ()
dev_close_window ()
dev_open_window (0, 0, 512, 512, black, WindowHandle)
set_display_font (WindowHandle, 16, mono, true, false)
dev_set_draw (margin)
*
Files : [ean1314,ean1313,ean13_defect_05]
Color : [magenta,red,green,yellow]
*
create_bar_code_model ([], [], BarCodeHandle)
set_bar_code_param (BarCodeHandle, persistence, 1)
*
for I : 0 to |Files| - 1 by 1Filename : barcode/ean13/ Files[I]* read_image (Image, Filename)get_image_size (Image, Width, Height)dev_set_window_extents (0, 0, Width, Height)dev_display (Image)* find_bar_code (Image, SymbolRegions, BarCodeHandle, EAN-13, DecodedDataStrings)* Display only scanlines of the decoded candidate region.if (|DecodedDataStrings|)CandidateIds : [0:|DecodedDataStrings| - 1]elseCandidateIds : allendif* get_bar_code_object (Candidates, BarCodeHandle, CandidateIds, candidate_regions)dev_set_line_width (4)dev_set_color (Color[0])dev_display (Candidates)* 获取所有扫描线对象红色get_bar_code_object (AllScanlines, BarCodeHandle, CandidateIds, scanlines_all)dev_set_color (Color[1])dev_display (AllScanlines)* 获取有效的扫描线对象绿色get_bar_code_object (ValidScanlines, BarCodeHandle, CandidateIds, scanlines_valid)dev_set_line_width (2)dev_set_color (Color[2])dev_display (ValidScanlines)* 获取边缘的扫描线对象黄色get_bar_code_object (MergedScanlines, BarCodeHandle, CandidateIds, scanlines_merged_edges)dev_set_color (Color[3])dev_display (MergedScanlines)* disp_message (WindowHandle, Decoded data string: DecodedDataStrings, window, 12, 12, black, true)disp_message (WindowHandle, [Candidate region,Extracted scanlines,Valid scanlines,Edges used for merging], window, 42, 12, Color, [black,false])if (I |Files| - 1)disp_continue_message (WindowHandle, black, true)stop ()endif
endfor主要代码 * 获取候选条形码区域的对象get_bar_code_object (Candidates, BarCodeHandle, CandidateIds, candidate_regions)dev_set_line_width (4)dev_set_color (Color[0])dev_display (Candidates)* 获取所有扫描线对象红色get_bar_code_object (AllScanlines, BarCodeHandle, CandidateIds, scanlines_all)dev_set_color (Color[1])dev_display (AllScanlines)* 获取有效的扫描线对象绿色get_bar_code_object (ValidScanlines, BarCodeHandle, CandidateIds, scanlines_valid)dev_set_line_width (2)dev_set_color (Color[2])dev_display (ValidScanlines)* 获取边缘的扫描线对象黄色get_bar_code_object (MergedScanlines, BarCodeHandle, CandidateIds, scanlines_merged_edges)dev_set_color (Color[3])dev_display (MergedScanlines) Halcon 检测条码绘制条码矩形 decode_bar_code_rectangle2
* This example demonstrates how to use the operator
* decode_bar_code_rectangle2.
* The bar code region is extracted by simple segmentation
* and the returned rectangle2 parameters are passed to
* the operator decode_bar_code_rectangle2.
*
* Initialize variables
Directory : barcode/ean13/
TeaBoxRegExp : .*tea_box.*
*
* Initialize settings
dev_update_window (off)
dev_set_draw (margin)
*
* Get list of tea_box*-image files
list_image_files (Directory, default, [], ImageFiles)
ImageFilesTea : regexp_select(ImageFiles,[TeaBoxRegExp,ignore_case])
read_image (Image, ImageFilesTea[0])
*
* Prepare graphics window and bar code model
dev_close_window ()
dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
set_display_font (WindowHandle, 14, mono, true, false)
dev_set_line_width (2)
create_bar_code_model ([], [], BarCodeHandle)
*
* Decode tea_box*-images
for ImageIndex : 0 to |ImageFilesTea| - 1 by 1read_image (Image, ImageFilesTea[ImageIndex])dev_display (Image)* * segment and determine the bar code regionthreshold (Image, RegionThresh, 56, 255)connection (RegionThresh, RegThreshConn)select_shape_std (RegThreshConn, RegionBC, max_area, 100)* * create input parameters for decode_bar_code_rectangle2smallest_rectangle2 (RegionBC, Row, Column, Phi, Length1, Length2)gen_rectangle2 (Rectangle2BC, Row, Column, Phi, Length1, Length2)dev_set_color (magenta)dev_display (Rectangle2BC)* * decode_bar_code_rectangle2 directly uses the passed rectangle2 parameters as ROIdecode_bar_code_rectangle2 (Image, BarCodeHandle, EAN-13, Row, Column, Phi, Length1, Length2, Decoded)get_bar_code_object (SymbolRegions, BarCodeHandle, all, symbol_regions)dev_set_color (lime green)dev_display (SymbolRegions)disp_message (WindowHandle, Found bar code: Decoded, window, 5, 5, black, true)if (ImageIndex |ImageFilesTea| - 1)disp_continue_message (WindowHandle, black, true)stop ()endif
endforhalcon 设置条码的高度和宽度案例
* This example demonstrates how to use the bar code parameters
* barcode_height_min and barcode_width_min to narrow the
* number of detected candidate regions in which possible bar
* codes are searched for.
*
* This is especially recommended if some factors like the bar code
* type, the number of encoded characters etc. are constant
* throughout the application. Then, the manual adjustment of
* these parameters can lead to an increasing speed and robustness.
*
* To illustrate the effect of the parameters, the detected
* candidate regions are displayed before and after setting
* each of the parameters. It is shown that the number of
* potential candidate region decreases when the parameters
* are manually adjusted.
* ****************************************************************
*
* Initialization
dev_update_off ()
dev_close_window ()
read_image (Image, barcode/code39/code3906)
dev_open_window_fit_image (Image, 0, 0, -1, -1, WindowHandle)
set_display_font (WindowHandle, 16, mono, true, false)
dev_set_line_width (3)
dev_set_draw (margin)
dev_set_color (green)
*
MinWidth : 280
MinHeight : 60
*
* Display a description
Message : This example demonstrates how to use the bar code
Message[1] : parameters \barcode_height_min\ and \barcode_width_min\
Message[2] : to narrow the number of detected candidate regions in
Message[3] : which the bar codes are searched for.
disp_message (WindowHandle, Message, window, 12, 12, black, true)
disp_continue_message (WindowHandle, black, true)
stop ()
*
* Create a bar code model
create_bar_code_model ([], [], BarCodeHandle)
*
* Adjust the minimal widths of the bar code elements
* and find the bar code
find_bar_code (Image, SymbolRegions, BarCodeHandle, Code 39, DecodedDataStrings)
*
* Get all candidate regions
get_bar_code_object (BarCodeObjects, BarCodeHandle, all, candidate_regions)
*
* Display all candidate regions
dev_set_colored (12)
dev_display (Image)
dev_display (BarCodeObjects)
Message : Candidate regions with default settings
disp_message (WindowHandle, Message, window, 12, 12, black, true)
disp_continue_message (WindowHandle, black, true)
stop ()
Message : Adjusting the parameters \barcode_width_min\ and
Message[1] : \barcode_height_min\ to decrease the number of
Message[2] : found candidate regions and thus to increase the
Message[3] : robustness of the application.
disp_message (WindowHandle, Message, window, 40, 12, black, true)
disp_continue_message (WindowHandle, black, true)
stop ()
*
* Minimal bar code width
* -----------------------------
* Set the minimal bar code width and search for bar codes again
set_bar_code_param (BarCodeHandle, barcode_width_min, MinWidth)
find_bar_code (Image, SymbolRegions, BarCodeHandle, Code 39, DecodedDataStrings)
*
* Get all candidate regions
get_bar_code_object (BarCodeObjects, BarCodeHandle, all, candidate_regions)
*
* Display the results
dev_display (Image)
dev_display (BarCodeObjects)
Message : Candidate regions with adjusted parameter:
Message[1] : \barcode_width_min\ MinWidth
disp_message (WindowHandle, Message, window, 12, 12, black, true)
disp_continue_message (WindowHandle, black, true)
stop ()
*
* Minimal bar code height
* -------------------------
* Set the minimal bar code height and search for bar codes again
set_bar_code_param (BarCodeHandle, barcode_height_min, MinHeight)
find_bar_code (Image, SymbolRegions, BarCodeHandle, Code 39, DecodedDataStrings)
*
* Get all candidate regions
get_bar_code_object (BarCodeObjects, BarCodeHandle, all, candidate_regions)
*
* Display the results
dev_display (Image)
dev_display (BarCodeObjects)
Message : Candidate region with adjusted parameters:
Message[1] : \barcode_width_min\ MinWidth
Message[2] : \barcode_height_min\ MinHeight
disp_message (WindowHandle, Message, window, 12, 12, black, true)
disp_continue_message (WindowHandle, black, true)
stop ()
*
* Display the symbol region and the decoded string
dev_display (Image)
dev_set_color (red)
dev_display (BarCodeObjects)
dev_set_color (lime green)
dev_display (SymbolRegions)
disp_message (WindowHandle, Search with adjusted parameters, window, 12, 12, black, true)
disp_message (WindowHandle, Decoded string: DecodedDataStrings, window, 40, 12, black, true)
disp_message (WindowHandle, [Candidate regions,Symbol region], window, 170, 12, [red,lime green], true)没有设置set_bar_code_param (BarCodeHandle, ‘barcode_height_min’, MinHeight) 的情况下 设置之后对条码的识别
