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2. Pixel aspect ratio - Wikipedia

   en.wikipedia.org/wiki/Pixel_aspect_ratio

   Storage aspect ratio is the ratio of the image width to height in pixels, and can be easily calculated from the video file. Display aspect ratio is the ratio of image width to height (in a unit of length such as centimeters or inches) when displayed on screen, and is calculated from the combination of pixel aspect ratio and storage aspect ratio.

3. Image conversion - Wikipedia

   en.wikipedia.org/wiki/Image_conversion

   Many image formats are native to one specific graphics application and are not offered as an export option in other software, due to proprietary considerations. An example of this is Adobe Photoshop 's native PSD-format (Prevention of Significant Deterioration), which cannot be opened in less sophisticated programs for image viewing or editing ...

4. 14:9 aspect ratio - Wikipedia

   en.wikipedia.org/wiki/14:9_aspect_ratio

   The yellow outline, not including the black bars at top and bottom, shows the same picture cropped to 14:9, while the whole yellow box frames a 4:3 picture. 14:9 (1. 5:1) is a compromise aspect ratio between 4:3 and 16:9. [1] [2] It is used to create an acceptable picture on both 4:3 and 16:9 TV, conceived following audience tests conducted by ...

5. 16:9 aspect ratio - Wikipedia

   en.wikipedia.org/wiki/16:9_aspect_ratio

   A television set with the 16:9 image ratio. 16:9 is a widescreen aspect ratio with a width of 16 units and height of 9 units. Once seen as an "exotic" aspect ratio, [1] since 2009, it has become the most common aspect ratio for televisions and computer monitors, and is also the universal standard image format for the universal 1080p, 2160p and ...

6. Aspect ratio (image) - Wikipedia

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

   The 6 × 6 cm image size was the classic 1:1 format in the recent past. 120 film can still be found and used today. Many Polaroid instant films were designed as square formats. Furthermore, up until August 2015, photo-sharing site Instagram only allowed users to upload images in 1:1 format.

7. 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.