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Why does single image processing not perform as well as the mobile app?

The mobile app (barcode picker api) uses the video stream to scan. Scanning with a single image will never perform as well as scanning from a video stream. The probability of getting a good picture of a code is much lower with just one image. In addition the barcode scanner can not control the camera based on previous frames if a single image is used. Real time adjustment of auto focus and exposure optimized for barcode scanning make a big difference.

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