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high-definition image

high-definition image

"The high-definition image" means an image consisting of a small sized pixel, a wide dynamic range and high gray levels. Photo films for imaging have a pixel size of ~3 μm, a dynamic range of 2 digits and a gray scale of <16 bits. CCD has a pixel size of 13.5 μm, a dynamic range of 4 digits and gray scales of 16 bits. The imaging plate has a pixel size of 25 μm, a dynamic range of 5 to 6 digits and gray scales of 20 bits.

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