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  2. Image subtraction - Wikipedia

    en.wikipedia.org/wiki/Image_subtraction

    Image subtraction or pixel subtraction or difference imaging is an image processing technique whereby the digital numeric value of one pixel or whole image is subtracted from another image, and a new image generated from the result.

  3. Wikipedia : Public domain image resources

    en.wikipedia.org/wiki/Wikipedia:Public_domain...

    Good Free Photos – All public domain pictures of mainly landscape but wildlife and plants as well; LibreShot.com – High-resolution and natural looking photos in Martin Vorel's free stock photo site. Website is divided into several different categories including business, close up, traveling (Mongolia, Thailand, Europe), animals, plants and ...

  4. Microscope image processing - Wikipedia

    en.wikipedia.org/wiki/Microscope_image_processing

    Microscope image processing is a broad term that covers the use of digital image processing techniques to process, analyze and present images obtained from a microscope. Such processing is now commonplace in a number of diverse fields such as medicine , biological research , cancer research , drug testing , metallurgy , etc.

  5. Dark-frame subtraction - Wikipedia

    en.wikipedia.org/wiki/Dark-frame_subtraction

    In digital photography, dark-frame subtraction is a way to reduce image noise in photographs shot with long exposure times, at high ISO sensitivity or at high temperatures. It takes advantage of two components of image noise that remain the same from one shot to the next, dark current and fixed-pattern noise . [ 1 ]

  6. Category:Image noise reduction techniques - Wikipedia

    en.wikipedia.org/wiki/Category:Image_noise...

    This category collects Wikipedia articles on techniques for removal or reduction of noise and artifacts from images and multi-dimensional data. Pages in category "Image noise reduction techniques" The following 19 pages are in this category, out of 19 total.

  7. Foreground detection - Wikipedia

    en.wikipedia.org/wiki/Foreground_detection

    Background subtraction is any technique which allows an image's foreground to be extracted for further processing (object recognition etc.). Many applications do not need to know everything about the evolution of movement in a video sequence, but only require the information of changes in the scene, because an image's regions of interest are ...