Dear Nikita ,
I will try your notes, and I appreciate your prompt attention to this matter
Regards, Osama
Dear Nikita
When i scan the attached document there’s some bubble has been marked with lightly shade with a pencil. but the result is not correct as it recognized as empty bubble
I tried to adjust the threshold to 20 but it recognized all the bubble even the empty as filled when i increases the threshold to 25 some lightly shade bubble it recognized as empty
Is there any option to solve this problem ?
Hello, @osa8am82
Can you please share an example of template scan, that was marked with light shade of pencil?
I will investigate the issue with this example.
Hello, @osa8am82
I have investigated provided example.
Yes, some bubbles, like questions from 24 up to 34, are ignored by the recognition engine. They are not bright enough to be considered a valid answer by OMR engine.
Lowering threshold in GlobalPageSettings or in specific elements, unfortunately, will not help.
I can recommend using only strong and bright bubble marks, as in 35-45 questions.
Otherwise, they could be considered as a mark removed by eraser or accidental smearing of bubbles nearby etc.
Dear Nikita
Most of all student’s they use pencil to fill up the bubbles & all OMR apps I’ve used like “Remark Office” can detect the light shade of pencil except Aspose.OMR, i think this issue must be considered with your developers and mark it as major technical defect
Regards, Osama
@osa8am82 I am sorry to hear that. I will investigate for possible solutions and get back with development time frames.
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I have been working on an OMR-based student answer sheet correction project for the past five months and have chosen Aspose.OMR as the core component for the correction process. However, I have encountered a critical issue that may prevent me from continuing to use your product.
The problem lies in the detection of lightly shaded pencil marks. The current implementation fails to recognize answers where students have shaded the bubbles lightly, which significantly impacts the accuracy of the correction process. Since standardized OMR sheets often include various shading intensities, this limitation poses a major challenge for our application.
I would appreciate it if your development team could address this issue soon. If there are any workarounds or configuration settings that could improve the recognition of light pencil marks, please let me know. Additionally, if a fix is planned for an upcoming release, I would appreciate an estimated timeline.
I am happy to provide sample images to help reproduce the issue if needed. Looking forward to your prompt response.
Regards, Osama