realjema / omr_scanner

OMR Scanner for Shaastra Ignite

Description

Script to evaluate OMR's this Shaastra Ignite.

Outputs your marked answers.

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Dependencies

Opencv3

Python 2.5+, 3.4+

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Usage

python omr.py input_image

All intermediaries will be visible as separate panes.

Use any key to exit.

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Methodology

• Firstly we obtain a perspective transform, since we have a layout of the OMR sheet at hand

• Proceeding this we isolate areas where OMR bubbles are marked. This is done via edge detection and filter usage.

• Lastly, we create maps to isolate bubbles row wise, and compare their thresholded pixel values.

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Future Plans

1. Add CRNN integration to detect name, roll no..etc