the value of validation data is invalid

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kavitha kethavath 2020-5-1

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https://ww2.mathworks.cn/matlabcentral/answers/522262-the-value-of-validation-data-is-invalid

回答： Ajay 2023-1-19

the value of validation data is invalid. augmenetedImageDataStore cannot form MiniBatches of data because input image sizes differ in 3rd dimension. Consider using colorPreprocessing option to ensure all augmented images have same number of channels.

this is the error raised while training my own image dataset.help me?

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Neus Alcon 2020-5-20

Hi!

I'm trying to trin a Neural network and I have the same error... Did you solve it? Actually I don't know what I have to do to fix that error. Could you help me please? I would be very greatful!

Thanks

Nur Alia Aqila Md Zin 2021-5-19

Hi Kavitha Kethavath & Neus Alcon!

Did you guys solve it? I have the same error but did not know how to fix it. Could you help me please? Because my result depends on this project. I would be very greatful if you guys help me to fix this. Please!!!

Thank you

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Answer 1

Shubh Sahu 2020-5-4

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https://ww2.mathworks.cn/matlabcentral/answers/522262-the-value-of-validation-data-is-invalid#answer_430211

It seems that the images in Input dosen't have consistent channel. To know more on RGB channel you can go to this link. augmentedimagedatastor works only with consistent number of channel in each image. Please use ColorPrerocessing to make channel consistent. For more information you can look into the following link.

https://in.mathworks.com/help/deeplearning/ug/preprocess-images-for-deep-learning.html

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Nur Alia Aqila Md Zin 2021-5-19

Hi!

I did not understand how to do the ColourPreprocessing as I already read all the link you gave. But still I didn't understand how to do it. I'm trying to train the network using Deep Network Design Toolbox. Please help me to fix this problem. Thank you

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