(Median Filter Continued From Page 1)
You can specify the value of the N as a
parameter in the new barcode functions.
You can also display a progress bar
during filtering the image for the user.
About
new BiBrP417.dll barcode functions.
The new barcode functions work for only
monochrome (black and white), 8 bit per
pixel and 24 bit per pixel images. The
names of the new functions in
BiBrP417.dll are:
ReadPDF417BarcodeRemoveNoise,
ReadAllPDF417BarcodesRemoveNoise and
PDF417RemoveNoise.
ReadPDF417BarcodeRemoveNoise
This function uses the median filter on
the image and then reads and decodes a
PDF-417 Barcode with any orientation in
the given range of the input image and
returns the decoded string.
ReadAllPDF417BarcodesRemoveNoise
This function uses the median filter on
the image and then reads and decodes any
of the barcodes on the image.
PDF417RemoveNoise
This function uses the median filter on
the image and returns the newly created
DIB.
Example of using new functions in C++
int ErrCode, FilterSize, QuietZoneSize,
N, BarCodeNum = 0;
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// The function displays progress bar
during filtering
HANDLE hRet =
ReadAllPDF417BarcodesRemoveNoise(pDoc->hDib,
N, DISPLAY_PROGRESS, AfxGetMainWnd()->m_hWnd,
NULL, FilterSize, QuietZoneSize, &BarCodeNum,
&ErrCode);
About
new BiBrP417.ocx barcode methods.
The names of the new barcode methods are
ReadPDF417BarcodeRemoveNoise and
ReadAllPDF417BarRemoveNoise.
ReadPDF417BarcodeRemoveNoise
This method uses the median filter on
the image and then reads and decodes a
PDF-417 Barcode with any orientation in
the given range of the input image and
returns the decoded string.
ReadAllPDF417BarRemoveNoise
This method uses the median filter on
the image and then reads and decodes all
the barcodes on the image.
Example of using new methods in VB.NET
Dim hDib As Long
Dim ret As Long
Dim BarcodeNum As Integer
Dim N As Short
‘ 1: show progress bar during filtering
ret =
view.BiBrP417.ReadAllPDF417BarRemoveNoise(hDib,
N, 1, Handle.ToInt32())
BarcodeNum =
view.BiBrP417.GetBarcodeNum()
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