CODEWITHSUNDEEP
deep-learningpngjpeg
sparkle
sparkle

Reputation: 185

Is there any loss of information in converting jpg files to png?

I am working on an image dataset using deep learning for segmentation. The training images and masks are in jpg format. I would like to know whether there is any loss of information in converting jpg to png? I searched a bit, but couldn't get any relevant information. I am trying out whether using png images improves segmentation accuracy. Any help is appreciated.

Upvotes: 1

Views: 1033

Answers (1)

pietz
pietz

Reputation: 2553

PNG uses a lossless compression per default.

However, the PNG standard supports many different bit depths, color spaces and nifty features that can result in information loss. For example if you use a standard JPEG file with 24bit color and convert it to a PNG with 8bit color, you will lose image information.

When using default settings in libraries such as OpenCV or PIL, the conversion will be lossless though.

Upvotes: 1

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