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  2. Comparison gallery of image scaling algorithms - Wikipedia

    en.wikipedia.org/wiki/Comparison_gallery_of...

    One of the simpler ways of increasing the size, replacing every pixel with a number of pixels of the same color. The resulting image is larger than the original, and preserves all the original detail, but has (possibly undesirable) jaggedness. The diagonal lines of the "W", for example, now show the "stairway" shape characteristic of nearest ...

  3. Image scaling - Wikipedia

    en.wikipedia.org/wiki/Image_scaling

    Image upscaled 400% using Topaz A.I. Gigapixel with Low noise reduction Image upscaled 400% using RealSR DF2K-JPEG AI-driven software such as the MyHeritage Photo Enhancer allows detail and sharpness to be added to historical photographs, where it is not present in the original.

  4. Comparison of graphics file formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_graphics...

    JPEG XR / HD Photo: JPEG XR / HD Photo Microsoft.wdp, .hdp, .jxr image/vnd.ms-photo General purpose royalty-free KDC: Kodak DC40/DC50 RAW Kodak: TIFF .kdc K25: Kodak DC25 RAW Kodak: TIFF .k25 Logluv TIFF: Greg Ward TIFF Supported by LibTIFF: MNG: Multiple-image Network Graphics PNG.mng video/x-mng Yes NEF: Nikon RAW Nikon: TIFF .nef MIFF ...

  5. Non-local means - Wikipedia

    en.wikipedia.org/wiki/Non-local_means

    Suppose is the area of an image, and and are two points within the image. Then, the algorithm is: [6] = () (,).where () is the filtered value of the image at point , () is the unfiltered value of the image at point , (,) is the weighting function, and the integral is evaluated .

  6. Comparison of image viewers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_image_viewers

    adjustable size Yes Yes fullscreen thumbnails, dir-tree Yes Yes name, size, date IrfanView: Yes Yes Yes 1:1, fit width and/or height, lock No Yes 18 predefined sizes: 50×50–800×800 No dir-tree, search results Yes Yes name, date, file size, image width/height, type, user-defined KPhotoAlbum: Yes Yes Yes fit, in/out, presets Yes views search ...

  7. Comparison of digital and film photography - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_digital_and...

    Because of the relatively large size of the imaging area these media provide, they can record higher resolution images than most consumer digital cameras. Based upon the above pixel density, a medium-format film image can record an equivalent resolution of approximately 83 million pixels in the case of a 60 x 60 mm frame, to 125 million pixels ...

  8. Image fidelity - Wikipedia

    en.wikipedia.org/wiki/Image_fidelity

    Image fidelity, often referred to as the ability to discriminate between two images [1] or how closely the image represents the real source distribution. [2] Different from image quality, which is often referred to as the subject preference for one image over another, image fidelity represents to the ability of a process to render an image accurately, without any visible distortion or ...

  9. Dark-frame subtraction - Wikipedia

    en.wikipedia.org/wiki/Dark-frame_subtraction

    It is important that dark frames are taken at the same ISO sensitivity and exposure time as the original photo, because the brightness of fixed pixel noise is dependent on both. [1] Under these circumstances, a single dark frame can be subtracted from multiple photos taken at these parameters, amounting to a time saving and allowing noise ...

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