enhance image quality for read Barcode

Question

Amir Azadeh Ranjbar 2022-8-1

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https://ww2.mathworks.cn/matlabcentral/answers/1772110-enhance-image-quality-for-read-barcode

回答： Benjamin Thompson 2022-8-4

i want use readbarcode function but i cant find any barcode Because of the low quality of the photo
Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parentheses.

Error in connector.internal.fevalMatlab

Error in connector.internal.fevalJSON

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Answer 1

Benjamin Thompson 2022-8-1

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https://ww2.mathworks.cn/matlabcentral/answers/1772110-enhance-image-quality-for-read-barcode#answer_1019385

Can you get a better photo? Can you read the barcode manually from this photo?

You can use improfile to get something like this and decide if further processing is feasible, or think about what types of filtering might clean up the signal

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Amir Azadeh Ranjbar 2022-8-4

thank you

But it didn't work

Maybe I should get a better webcam

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Answer 2

Benjamin Thompson 2022-8-4

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https://ww2.mathworks.cn/matlabcentral/answers/1772110-enhance-image-quality-for-read-barcode#answer_1021280

If your camera has autofocus, the reflection off the table below may be confusing it. Place something nonreflective with no high contrast features (like a blank sheet of paper) on the table underneath the barcode.