Image quality measures are represented in decibels or on a logarithmic scale because human perception of image quality is nonlinear and very wide. Logarithmic scale accounts for varying sensitivity across intensity levels and offers a compact representation for wide dynamic ranges. It simplifies comparison between images and systems, facilitates standardization, and enables mathematical modeling. In addition, it helps in compressing pixel intensity values and provides insight into system behavior.
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Hello sir, why the image quality measures like SNR / PSNR are represented in decibels. Or on a logarithmic scale?
Image quality measures are represented in decibels or on a logarithmic scale because human perception of image quality is nonlinear and very wide. Logarithmic scale accounts for varying sensitivity across intensity levels and offers a compact representation for wide dynamic ranges. It simplifies comparison between images and systems, facilitates standardization, and enables mathematical modeling. In addition, it helps in compressing pixel intensity values and provides insight into system behavior.
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