随笔分类 - Graphics
摘要：Images are stored as an array of unsigned characters. Ideally, they would be in a structure, butthe limitations of C prevents an efficient definition of a structure for an image while still allowinga compile-time declaration of the data for an image. The effective definition of the structure is asfo
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摘要：http://www.codeguru.com/cpp/g-m/bitmap/specialeffects/article.php/c1739/Invert-mirror-a-bitmap-inplace.htmPosted byRoger OnslowonAugust 5th, 1998It is possible to invert a bitmap (laterally or vertically) IN-PLACE - ie. without creating any intermediate or temporary bitmaps. You can modify the origi
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摘要：http://www.codeguru.com/cpp/g-m/bitmap/specialeffects/article.php/c1743/Rotate-a-bitmap-image.htmRotate a bitmap imagehttp://www.codeguru.com/cpp/g-m/bitmap/specialeffects/article.php/c1725/Invert-mirror-a-bitmap.htmInvert (mirror) a bitmapPosted byZafir AnjumonAugust 5th, 1998We can invert an image
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摘要：http://www.codeguru.com/cpp/g-m/bitmap/specialeffects/article.php/c1725/Invert-mirror-a-bitmap.htmInvert (mirror) a bitmaphttp://www.efg2.com/Lab/ImageProcessing/RotateScanline.htmDiscussionIf one attempts to rotate a bitmap in the "forward" direction by selection Pixel (i, j) and rotating
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摘要：位图和调色板自然界中的所有颜色都可以由红、绿、蓝(R，G，B)三基色组合而成。针对含有红、绿、蓝色成分的多少，可以对其分别分成0～255个等级，而红、绿、蓝的不同组合共有256×256×256种，因此约能表示1600万种颜色。对每个像素进行了（R，G，B）量化的图像就是位图，其在计算机中对应文件的扩展名一般为.bmp调色板横空的功能在于缓解位图文件存储空间过大的问题,完全利用（R，G，B）组合来存储一个800×600的位图所需要的空间为800×600×3 = 1440000（字节）＝ 1.37M（字节）,假设位图为16色,只需要用4个bit就可
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摘要：http://www.efg2.com/Lab/ImageProcessing/FlipReverseRotate.htmThe purpose of this program, FlipReverseRotate.EXE, is to demonstrate how to flip (top-to-bottom) and/or reverse (left-to-right) a bitmap in memory and display the results on the screen. Three methods to flip/reverse are compared: Scanline
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