8.5 Recommendations For Better Performance

This topic provides the information about the better quality of the source image, the higher the accuracy of extraction will be.

Keeping DPI lower than 200 will give unclear and incomprehensible results while keeping the DPI above 600 will unnecessarily increase the size of the output file without improving the quality of the file. Thus, a DPI of 300 works best for this purpose.

Following parameters determines the image quality:

• Min text-size 10 pts (below 8pts are removed by noise).
• Min resolution (dpi) of 300 works best for Text Extraction.
• Sharp and visible characters.
• Min image size of 200 kb.
• Less image noise e.g., the image with shadows.
• Image with background noise e.g., image containing background with text data in foreground.