What would be the best way to alter an image to make it easier for zxing to detect the barcode?
And how can I alter an image in such a way in java?
I tried using RescaleOp to change the contrast, but I can’t understand it.
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What would be the best way to alter an image to make it easier for zxing to detect the barcode?
And how can I alter an image in such a way in java?
I tried using RescaleOp to change the contrast, but I can’t understand it.
There is no operation that will improve detection, in general. It already accounts for contrast, and brightening operations will just reduce the dynamic range in the image. Tint doesn’t matter.
For large and noisy images, it is possible that scaling it down, or applying a light blur, helps more than it hurts by blurring noise more than it blurs edges. However this operation will do more harm than good on your average, normal camera image.