Windows 32&64 SDK
BarcodeDecoder Methods
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Decodes barcodes in the specified image file.
FileName A string defining the file name.
Integer. Returns the number of decoded barcodes.
Similar to the DecodeFile method, but searches only a certain part of the image defined by the parameters x, y, width, height.
FileName A string defining the file name. x An integer value that defines the X coordinate of scanning zone. y An integer value that defines the Y coordinate of scanning zone. width An integer that defines the width of scanning zone. height An integer that defines the height scanning zone.
Integer. Returns the number of decoded barcodes.
Similar to the DecodeFile method, but a file in the form of a data stream is passed as a parameter. Everything that is contained in the image file is passed as a data stream.
FileStream A Variant that contains a safe array of Bytes.
Integer. Returns the number of decoded barcodes.
This method is convenient when there is no need to save the barcode image to a file, for instance, while decoding barcodes from some video capture device.
Similar to the DecodeStream method, but searches only a certain part of the image defined by the parameters x, y, width, height.
FileStream A Variant that contains a safe array of Bytes. x An integer value that defines the X coordinate of scanning zone. y An integer value that defines the Y coordinate of scanning zone. width An integer that defines the width of scanning zone. height An integer that defines the height scanning zone.
Integer. Returns the number of decoded barcodes.
This method finds barcodes in a raw gray map. It is the fastest method as compared to the other methods because no additional image transformations are performed in this case.
GrayMap A Variant that contains a safe array of Bytes. GrayMapWidth Gray map width. GrayMapHeight Gray map height.
Integer. Returns the number of decoded barcodes.
A gray map is a byte matrix. Each byte has the value from 0 to 255 and represents one image pixel.
0 means a black pixel, 255 means a white pixel.
The matrix is passed to the DecodeGrayMap method as a one-dimensional array. The first upper line of the image is sent first, then comes the second line and so on.
See the picture below for explanation.
Similar to the DecodeGrayMap method, but searches only a certain part of the image defined by the parameters x, y, width, height.
GrayMap A Variant that contains a safe array of Bytes. GrayMapWidth Gray map width. GrayMapHeight Gray map height. x An integer value that defines the X coordinate of scanning zone. y An integer value that defines the Y coordinate of scanning zone. width An integer that defines the width of scanning zone. height An integer that defines the height scanning zone.
Integer. Returns the number of decoded barcodes.
It sets additional Barcode Decoder object properties. The input parameter PropertyValue is VARIANT, it can take data of various types depending on the PropertyName parameter.
PropertyName String that defines the property name. PropertyValue Variant that contains the property value.
| PropertyName | Description |
| TotalBarcodes | how many barcodes of all types to search for in the entire document. Default value — 0 (unlimited) |
| FrameTime | Time to decode 1 frame in milliseconds. Default value — 0 (unlimited). |
| DecodePageNumber | the number of the page to be recognized. This property works only for multipage files, e.g. TIFF, PDF. If this page does not exist in the file, an error will be returned during the decoding process. Default value — 0 (decode all pages). |
| AddFilter1 | Filter binary scanning noise like this. Usually don’t need to use this filter but it may need when image too distorted by this noise type. Integer, Default value — 0 |
| AddFilter2 | Filter binary scanning noise like this. Integer, Default value — 0 |
| Filter2Value | Filter 2 parameter. Recommended 0.5 — 1.5 (default 1). |
| BlurringRect | the rect for blurring measure. This is string value like «0;10;150;100;» (where: 0-left, 10-top, 150-right, 100-bottom). Default value — «0;0;0;0;» (don’t measure). |
| BlurringValue | the integer value of blurring if BlurringRect is determined. You can get this value after calling one of Decode___ method. |
| BlurringCalc | calculate the blurring value of decoded barcode (default — false). |
| LinearInterl25MinLen | the minimum length of an Interleaved 2/5 barcode. If the length of a read barcode is less than this value, the barcode is considered unrecognized. Default value — 2 |
| LinearInterl25MaxLen | the maximum length of an Interleaved 2/5 barcode. If the length of a read barcode is greater than this value, the barcode is considered unrecognized. Default value — 50 |
| LinearIndustr25MinLen | same as LinearInterl25MinLen only for Industrial 2/5 barcode Default value — 1 |
| LinearIndustr25MaxLen | same as LinearInterl25MaxLen only for Industrial 2/5 barcode Default value — 50 |
| LinearIndustr25Iata | decode IATA 2/5 barcodes (BarcodeTypes must contain Industrial 2/5 barcode type). Default value — «false» (don’t decode). |
| LinearCode11MinLen | Default value — 1 |
| LinearCode11MaxLen | Default value — 50 |
| LinearCode39MinLen | Default value — 1 |
| LinearCode39MaxLen | Default value — 50 |
| LinearCode128MinLen | Default value — 1 |
| LinearCode128MaxLen | Default value — 70 |
| LinearCodabarMinLen | Default value — 1 |
| LinearCodabarMaxLen | Default value — 50 |
| LinearFindErrorBarcodes | search for linear barcodes that have not been recognized for some reason. For example, corrupted, partially closed, etc. Example here. Default value — false |
| LinearBarcodesPerPage | how many linear barcodes to search for on each page. By default, this value is 0, i.e. search for all barcodes on each page. If the number of found barcodes equals to LinearFindBarcodes, the search is stopped. Default value — 0 |
| LinearFastDecoding | quick Linear barcode reading. It may be used on real-time barcode reading devices (mobile devices), where it is impossible to spend much time on recognition of poor-quality images. It is not recommended to set this property for image recognition on non-mobile devices. Default value — 0 (Normal). Possible values:0 — Normal 1 — Fast 2 — Slow |
| LinearVerify | Verify linear barcode after decoding. Improves reliability linear barcode reading. Default value — False (don’t verify). |
| PDF417BarcodesPerPage | how many PDF417 barcodes to search for on each page. By default, this value is 0, i.e. search for all barcodes on each page. Default value — 0 |
| PDF417FindBarcodes | how many PDF417 barcodes to search for in the entire document. Default value — 1 |
| PDF417FastDecoding | same as LinearFastDecoding only for PDF417. |
| PDF417SymbologyID | the value determining whether to add Symbology ID to the barcode text or not. Default value — false |
| PDF417FindMicro | Finds Micro PDF417 barcodes. Default value — false |
| PDF417Robust | Activates the robust PDF417 decoder mode. This property can help to decode high distorted PDF417 barcodes. Default value — false |
| DataMatrixBarcodesPerPage | how many DataMatrix barcodes to search for on each page. By default, this value is 0, i.e. search for all barcodes on each page. Default value — 0 |
| DataMatrixFindBarcodes | how many DataMatrix barcodes to search for in the entire document. Default value — 1 |
| DataMatrixFastDecoding | same as LinearFastDecoding only for DataMatrix. |
| DataMatrixInverseType | what barcodes should be decoded (darks on light or lights on dark). Default value — darks on light |
| DataMatrixSupportECI | support or not ECI (Extended Channel Interpretation). Default value — false |
| DataMatrixSymbologyID | the value determining whether to add Symbology ID to the barcode text or not. Default value — false |
| DataMatrixDecMirror | Mirror DataMatrix barcode reading. Default value — 0 (Normal). Possible values: 0 — Normal (doesn’t read mirror DataMatrix barcodes) 1 — Mirror (decodes only mirror) 2 — Both (normal and mirror) |
| QRCodeBarcodesPerPage | how many QRCode barcodes to search for on each page. By default, this value is 0, i.e. search for all barcodes on each page. Default value — 0 |
| QRCodeFindBarcodes | how many QRCode barcodes to search for in the entire document. Default value — 1 |
| QRCodeFastDecoding | same as LinearFastDecoding only for QRCode. |
| QRCodeSymbologyID | the value determining whether to add Symbology ID to the barcode text or not. Default value — false |
| QRCodeFindMicro | Finds Micro QRCode barcodes. Default value — false |
| QRCodeDecMirror | Mirror QRCode barcode reading. Default value — 0 (Normal). Possible values: 0 — Normal (doesn’t read mirror QRCode barcodes) 1 — Mirror (decodes only mirror) 2 — Both (normal and mirror) |
| AztecCodeBarcodesPerPage | how many AztecCode barcodes to search for on each page. By default, this value is 0, i.e. search for all barcodes on each page. Default value — 0 |
| AztecCodeFindBarcodes | how many AztecCode barcodes to search for in the entire document. Default value — 1 |
| AztecCodeFastDecoding | same as LinearFastDecoding only for AztecCode. |
| AztecCodeSymbologyID | the value determining whether to add Symbology ID to the barcode text or not. Default value — false |
| VideoDelayAfterDec | The pause (in milliseconds) in decoding after barcode has been found. Default value — 1000 (1 second) |
| VideoDelayFrame | The pause (in milliseconds) between frames. Default value — 0 (no pause) |
| VideoDelayRedraw | The pause (in milliseconds) between frames redrawing. Default value — 0 (no pause) |
| VideoStretch | Stretch or not image on control size. Default value — 0 (doesn’t stretch) |
| VideoBeep | Beep or not after barcode. Default value — 1 (beep) |
Returns the properties set with the SetProperty method.
for Windows » href=»https://dtk-barcode-reader-sdk.en.softonic.com»>DTK Barcode Reader SDK for Windows
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Softonic review
Process barcodes from images and bitmaps
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Author’s review
Barcode recognition SDK is a powerful developer library which recognizes 1-D and 2-D barcodes from digital images and bitmaps. Using this SDK you can integrate barcode recognition functionality to your Windows applications, embedded systems (Windows CE, Pocket PC, Smartphone) and Web services.
The following image formats are supported: BMP, TIF, JPG, PNG and multipage TIF and PDF (Portable Document Format). The unique and powerful recognition algorithm searches for barcodes very fast, in any position and orientation from your images. The SDK is very simple to use, it not require deep knowlage of programming. Also SDK includes many source code examples written in popular programming languages C++,VB,C#,VB Script.
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