Issue: It’s very common that an image taken may present some shadows. The barcode area with uneven lighting is a very challenging decoding situation that many scanners fail to read.
Solution: Dynamsoft Barcode Reader provides an adaptive binarization mode BM_LOCAL_BLOCK which caters to different lighting areas in the image in order to successfully decode these challenging barcodes.
JSON Template:
{
"ImageParameter" : {
"BinarizationModes": [
{
"BlockSizeX": 0,
"BlockSizeY": 0,
"EnableFillBinaryVacancy": 1,
"ImagePreprocessingModesIndex": -1,
"LibraryFileName": "",
"LibraryParameters": "",
"Mode": "BM_LOCAL_BLOCK",
"ThresholdCompensation": 10
}
],
"Name": "Settings"
},
"Version" : "3.0"
}
Binarized image produced by Dynamsoft Barcode Reader:
Template for Dynamsoft Barcode Reader:
JavaScript Code Snippet to Use the Template:
barcodeReader.initRuntimeSettingsWithString(template);
Image Source:
https://boofcv.org/index.php?title=Performance:QrCode
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