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2. Fatpaint - Wikipedia

   en.wikipedia.org/wiki/Fatpaint

   Fatpaint is a free, online graphic design and desktop publishing software product and image editor. It includes integrated tools for creating page layout , painting, coloring and editing pictures and photos , drawing vector images , using dingbat vector clipart , writing rich text , creating ray traced 3D text logos and displaying graphics on ...

3. Image geometry correction - Wikipedia

   en.wikipedia.org/wiki/Image_geometry_correction

   The simplest application of image geometry correction is a specific case known as keystone distortion correction derived from Keystone effect.Keystone distortion gets its name from the symmetric trapezoidal distortion resulting from misaligned projector placement in the vertical dimension (although the term is generally applied to the non-symmetric quadrilateral shape that occurs from an off ...

4. Image warping - Wikipedia

   en.wikipedia.org/wiki/Image_warping

   Image warping example. Image warping is the process of digitally manipulating an image such that any shapes portrayed in the image have been significantly distorted. Warping may be used for correcting image distortion as well as for creative purposes (e.g., morphing [1]). The same techniques are equally applicable to video.

5. Keystone effect - Wikipedia

   en.wikipedia.org/wiki/Keystone_effect

   The keystone effect is the apparent distortion of an image caused by projecting it onto an angled surface. It is the distortion of the image dimensions, such as making a square look like a trapezoid, the shape of an architectural keystone, hence the name of the feature. In the typical case of a projector sitting on a table, and looking upwards ...

6. Anamorphosis - Wikipedia

   en.wikipedia.org/wiki/Anamorphosis

   The images were mostly created freehand, unlike the grid system used in the west. As Chinese anamorphoses primarily focused on erotic themes, Jesuit influence is unlikely. [ 3 ] : 160-161 It is considered likely that Chinese catoptric techniques, which are technically unrelated to geometric anamorphosis, influenced European mirror anamorphosis ...

7. Perspective control - Wikipedia

   en.wikipedia.org/wiki/Perspective_control

   Picture of Notre Dame de Reims showing perspective distortion The same picture corrected. Perspective control is a procedure for composing or editing photographs to better conform with the commonly accepted distortions in constructed perspective. The control would: make all lines that are vertical in reality vertical in the image.