Image Filter Art---(Instagram) 1977 filters

Image effects---(Instagram) 1977 Filter This article describes the 1977 implementation of this filter, which was originally used in Instagram, because the Instagram filter is popular, so it is also used in the American graphics show, but the name is not 1977, But 1970. The principle is not much to say, directly to the code is the most real, the code is optimized, the complex algorithm has been written into a mapping table, this can greatly improve efficiency, the code is as follows:  private Bitmap filterprocess (Bitmap a)         {            Bitmap srcbitmap = new Bitmap (a);      &NBS P     int w = srcbitmap.width;            int h = srcbitmap.height;    &NB Sp       int[] Processab = new int[256] {64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64 , 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 65, 66, 68, 69, 70, 71, 72, 73, 75, 76, 77, 78, 79, 80, 82, 83, 84, 85, 86, 87, 89, 90, 91, 92, 93, 95, 96, 97, 98, 99, 100, 102, 103, 104, 105, 106, 107, 109, 110, 111, 112, 113, 115, 116, 117, 118, 119, 120, 122, 123, 124, 125, 126, 127, 129, 130, 131, 132, 133, 134, 136, 137, 138, 139, 139, 140, 142, 143, 144, 145, 146, 1 47, 149, 150, 151, 152, 153, 154, 156, 157, 158, 159, 160, 161, 163, 164, 165, 166, 167, 169, 170, 171, 172, 173, 174, 176 , 177, 178, 179, 180, 181, 183, 184, 185, 186, 187, 189, 190, 191, 192, 193, 194, 196, 197, 198, 199, 200, 201, 203, 204, 205, 206, 207, 208, 210, 211, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 21 2, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212, 212};//  & nbsp         int[] Processag = new int[256] {57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 5 7, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 73, 74, 75, 76, 77, 78, 79, 80, 81, 83, 84, 85, 85, 86, 87, 88, 89, 90, 91, 93, 94, 95, 96, 96, 97, 98, 99, 100, 102, 103, 104, 105, 106, 107 , 108, 108, 109, 110, 112, 113, 114, 115, 116, 117, 118, 119, 120, 120, 122, 123, 124, 125, 126, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 142, 143, 143, 144, 145, 146, 147, 148, 149, 150, 152, 153, 154, 155, 15 5, 156, 157, 158, 159, 160, 162, 163, 164, 165, 166, 167, 167, 168, 169, 170, 172, 173, 174, 175, 176, 177, 178, 179, 179, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 202, 202, 203, 204, 2 05, 206, 207, 208, 209, 210, 212, 213, 214, 214, 215, 216, 217, 218, 219, 221, 222, 223, 224, 225, 226, 226, 227, 228, 229 , 231, 232, 233, 234, 235, 236, 237, 237, 238, 239, 241, 242, 243, 244, 245, 246, 247, 248, 249, 249, 251, 252, 253, 254} ;//           int[] Processar = new int[256] {81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81, 81 , 81, 81, 81, 82, 84, 84, 85, 86, 88, 88, 89, 91, 92, 93, 93, 95, 96, 97, 98, 99, 100, 101, 103, 103, 104, 106, 107, 107, 108, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 121, 121, 122, 123, 125, 126, 126, 128, 129, 130, 131, 132, 133, 13 4, 135, 136, 137, 138, 140, 140, 141, 143, 144, 145, 145, 147, 148, 149, 150, 151, 152, 154, 154, 155, 156, 158, 159, 159, 161, 162, 163, 164, 164, 165, 166, 167, 168, 169, 170, 171, 173, 173, 174, 176, 177, 178, 178, 180, 181, 182, 183, 184, 1 85, 186, 187, 188, 189, 191, 192, 192, 193, 195, 196, 196, 198, 199, 200, 201, 202, 203, 204, 206, 206, 207, 208, 210, 210 , 211, 213, 214, 215, 215, 217, 218, 219, 220, 221, 222, 223, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 2 25, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225, 225 , 225, 225, 225, 225};//            System.Drawing.Imaging.BitmapData srcdata = SRCBITMAP.L Ockbits (New Rectangle (0, 0, W, h), System.Drawing.Imaging.ImageLockMode.ReadWrite, SYSTEM.DRAWING.IMAGING.PIXELFORMAT.FORMAT32BPPARGB);            byte* PSRC = (byte*) srcdata.scan0;            INT offset = srcdata.stride-w * 4;        &N Bsp   for (int j = 0; J < H; j + +)             {                for (int i = 0; i < W; i++)                 {                    psrc[0] = (byte) processab[psrc[0]];                    psrc[1] = (byte) processag[psrc[1] ;                    psrc[2] = (byte) processar[psrc[2]];    &N Bsp               PSRC + 4;               }                PSRC + offset;           }            srcbitmap.unlockbits (srcdata);            return Srcbitmap;&nbs P      } below to see the effect of this filter comparison: Original Instagram 1977 Filter Effects This article effect Finally, put a complete C # version of the demo download Link: http://www.zealpixel.com/forum.php?mod=viewthread&tid=74&page=1&extra= #pid76

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Image Filter Art---(Instagram) 1977 filters