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2. Image scaling - Wikipedia

   en.wikipedia.org/wiki/Image_scaling

   Image scaling can be interpreted as a form of image resampling or image reconstruction from the view of the Nyquist sampling theorem.According to the theorem, downsampling to a smaller image from a higher-resolution original can only be carried out after applying a suitable 2D anti-aliasing filter to prevent aliasing artifacts.

3. 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 ...

4. JPEG - Wikipedia

   en.wikipedia.org/wiki/JPEG

   This is an accepted version of this page This is the latest accepted revision, reviewed on 26 January 2025. Lossy compression method for reducing the size of digital images For other uses, see JPEG (disambiguation). "JPG" and "Jpg" redirect here. For other uses, see JPG (disambiguation). JPEG A photo of a European wildcat with the compression rate, and associated losses, decreasing from left ...

5. File size - Wikipedia

   en.wikipedia.org/wiki/File_size

   Due to typical file system design, the amount of space allocated for a file is usually larger than the size of the file's data – resulting in a relatively small amount of storage space for each file, called slack space or internal fragmentation, that is not available for other files but is not used for data in the file to which it belongs.

6. Aspect ratio (image) - Wikipedia

   en.wikipedia.org/wiki/Aspect_ratio_(image)

   Common aspect ratios used in film and display images. The common film aspect ratios used in cinemas are 1.85:1 and 2.40:1. [1] Two common videographic aspect ratios are 4:3 (1. 3:1), [a] the universal video format of the 20th century, and 16:9 (1. 7:1), universal for high-definition television and European digital television.

7. Display resolution standards - Wikipedia

   en.wikipedia.org/wiki/Display_resolution_standards

   In October 2011 Toshiba announced the REGZA 55x3, [48] which is claimed to be the first 4K glasses-free 3D TV. DisplayPort supports 3840 × 2160 at 30 Hz in version 1.1 and added support for up to 75 Hz in version 1.2 (2009) and 120 Hz in version 1.3 (2014), [ 49 ] while HDMI added support for 3840 × 2160 at 30 Hz in version 1.4 (2009) [ 50 ...

8. JPEG 2000 - Wikipedia

   en.wikipedia.org/wiki/JPEG_2000

   JPEG 2000 (JP2) is an image compression standard and coding system. It was developed from 1997 to 2000 by a Joint Photographic Experts Group committee chaired by Touradj Ebrahimi (later the JPEG president), [1] with the intention of superseding their original JPEG standard (created in 1992), which is based on a discrete cosine transform (DCT), with a newly designed, wavelet-based method.

9. Kilobyte - Wikipedia

   en.wikipedia.org/wiki/Kilobyte

   On the other hand, the Tandon 5 1 ⁄ 4-inch DD floppy format (1978) held 368,640 (which is 360×1024) bytes, but was advertised as "360 KB", following the 1024 convention. Early home computer systems would often advertise using the 1024 convention, hence the naming of the Commodore 64 , Commodore 128 , and the Amstrad CPC 464 .