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2. Image compression - Wikipedia

   en.wikipedia.org/wiki/Image_compression

   Image compression. Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other ...

3. Block Truncation Coding - Wikipedia

   en.wikipedia.org/wiki/Block_Truncation_Coding

   Block Truncation Coding (BTC) is a type of lossy image compression technique for greyscale images. It divides the original images into blocks and then uses a quantizer to reduce the number of grey levels in each block whilst maintaining the same mean and standard deviation .

4. Lossless JPEG - Wikipedia

   en.wikipedia.org/wiki/Lossless_JPEG

   Typically, compressions using lossless operation mode can achieve around 2:1 compression ratio for color images. [5] This mode is quite popular in the medical imaging field, and defined as an option in DNG standard, but otherwise it is not very widely used because of complexity of doing arithmetics on 10, 12, or 14bpp values on typical embedded 32-bit processor and a little resulting gain in ...

5. JPEG - Wikipedia

   en.wikipedia.org/wiki/JPEG

   JPEG. JPEG ( / ˈdʒeɪpɛɡ / JAY-peg, short for Joint Photographic Experts Group) [ 2] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality.

6. Adaptive scalable texture compression - Wikipedia

   en.wikipedia.org/wiki/Adaptive_scalable_texture...

   Example image prior to compression Detail from example image, after compression at 8, 3.56 and 2 bits/pixel. The method of compression is an evolution of Color Cell Compression with features including numerous closely spaced fractional bit rates, multiple color formats, support for high-dynamic-range (HDR) textures, and real 3D texture support.

7. QOI (image format) - Wikipedia

   en.wikipedia.org/wiki/QOI_(image_format)

   The Quite OK Image Format (QOI) is a specification for lossless image compression of 24-bit (8 bits per color RGB) or 32-bit (8 bits per color with 8-bit alpha channel RGBA) color raster (bitmapped) images, invented by Dominic Szablewski and first announced on 24 November 2021.

8. Image file format - Wikipedia

   en.wikipedia.org/wiki/Image_file_format

   An image file format is a file format for a digital image. There are many formats that can be used, such as JPEG, PNG, and GIF. Most formats up until 2022 were for storing 2D images, not 3D ones. The data stored in an image file format may be compressed or uncompressed. If the data is compressed, it may be done so using lossy compression or ...

9. ICER (file format) - Wikipedia

   en.wikipedia.org/wiki/ICER_(file_format)

   ICER is a wavelet -based image compression file format used by the NASA Mars rovers. ICER has both lossy and lossless compression modes. The Mars Exploration Rovers Spirit and Opportunity both used ICER. Onboard image compression is used extensively to make best use of the downlink resources. The Curiosity rover supports the use of ICER for its ...