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2. Image editing - Wikipedia

   en.wikipedia.org/wiki/Image_editing

   Image sharpening: original (top), image sharpened (bottom). Another form of image sharpening involves a form of contrast. This is done by finding the average color of the pixels around each pixel in a specified radius, and then contrasting that pixel from that average color. This effect makes the image seem clearer, seemingly adding details.

3. CVIPtools - Wikipedia

   en.wikipedia.org/wiki/CVIPtools

   CVIP has the ability to read various image formats, including TIFF, PNG, GIF, JPEG, BMP, and RAW formats. It supports standard image processing functions, image compression, restoration, logical and arithmetical operations between images, contrast manipulation, image sharpening, frequency transformation, edge detection, segmentation, and geometric transformations.

4. Unsharp masking - Wikipedia

   en.wikipedia.org/wiki/Unsharp_masking

   Unsharp masking applied to lower part of image. Unsharp masking (USM) is an image sharpening technique, first implemented in darkroom photography, but now commonly used in digital image processing software. Its name derives from the fact that the technique uses a blurred, or "unsharp", negative image to create a mask of the original image. The ...

5. Kernel (image processing) - Wikipedia

   en.wikipedia.org/wiki/Kernel_(image_processing)

   In image processing, a kernel, convolution matrix, or mask is a small matrix used for blurring, sharpening, embossing, edge detection, and more.This is accomplished by doing a convolution between the kernel and an image.

6. Comparison of raster graphics editors - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_raster...

   Command line software suite for displaying, converting, and editing raster image files ImageMagick Studio LLC 1990: 7.1.1-43 [16] 2024-12-22 Free ImageMagick: iPhoto* Image organizer and basic editor for macOS; replaced by Photos: Apple Inc. 2002: 9.6 Proprietary: IrfanView: Image and video viewer with basic editing functions Irfan Skiljan 1996 ...

7. ImageMagick - Wikipedia

   en.wikipedia.org/wiki/ImageMagick

   The software mainly consists of a number of command-line interface utilities for manipulating images. ImageMagick does not have a robust graphical user interface to edit images as do Adobe Photoshop and GIMP, but does include – for Unix-like operating systems – a basic native X Window GUI (called IMDisplay) for rendering and manipulating images and API libraries for many programming languages.