圖像特效---(Instagram)1977濾鏡
本文介紹1977這個濾鏡的具體實現,這個濾鏡最早是Instagram中使用的 ,由于Instagram濾鏡備受歡迎,因此,美圖秀秀中也使用了這個濾鏡,只是名字不是1977,而是1970。
原理不多說了,直接給出代碼最實在,這個代碼是經過優化過的,復雜的算法都已經寫成了一個映射表,這樣做可以大大提高效率,代碼如下:
~~~
private Bitmap FilterProcess(Bitmap a)
{
Bitmap srcBitmap = new Bitmap(a);
int w = srcBitmap.Width;
int h = srcBitmap.Height;
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, 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, 147, 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, 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, 212 };//
int[] processAG = new int[256] { 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, 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, 155, 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, 205, 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, 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, 134, 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, 185, 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, 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 };//
System.Drawing.Imaging.BitmapData srcData = srcBitmap.LockBits(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;
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]];
pSrc += 4;
}
pSrc += offset;
}
srcBitmap.UnlockBits(srcData);
return srcBitmap;
}
~~~
下面看下這個濾鏡的效果對比:
[](http://www.zealpixel.com/data/attachment/portal/201508/10/215248lx5xl3v9p5v8mzxv.jpg)
原圖
[](http://www.zealpixel.com/data/attachment/portal/201508/10/215247qjjtjs8k3ace36qd.jpg)
Instagram 1977濾鏡效果
[](http://www.zealpixel.com/data/attachment/portal/201508/10/215248via611f11freryi1.jpg)
本文效果
最后,放上一個完整的C#版DEMO下載鏈接:[http://www.zealpixel.com/forum.php?mod=viewthread&tid=74&page=1&extra=#pid76](http://www.zealpixel.com/forum.php?mod=viewthread&tid=74&page=1&extra=#pid76)
- 前言
- 序言
- Brannan濾鏡
- 編碼基礎(Photoshop基礎變換的代碼實現)
- Toaster濾鏡
- Hudson濾鏡(Instagram)
- 暴雨濾鏡
- 大雪濾鏡
- 圖像濾鏡實現萬能方法研究
- 大霧效果濾鏡
- 連環畫濾鏡
- 暗調濾鏡
- 懷舊風格濾鏡
- (Nostalgla Filter)老照片濾鏡
- (Punch Filter)交叉沖印濾鏡
- (Lightleaks Filter)漏光濾鏡
- 漫畫濾鏡
- LOMO Filter
- Glow Filter發光濾鏡
- (Instagram)1977濾鏡
- (Sketch Filter)素描濾鏡
- 水彩畫濾鏡
- 圖像光照效果濾鏡
- Oilpaint油畫濾鏡
- Swirl濾鏡
- Wave濾鏡
- 球面(Spherize)濾鏡
- 擠壓(Pinch)濾鏡
- 旋轉模糊濾鏡
- 霓虹、浮雕、木刻濾鏡
- 圖像濾鏡暈影調節算法研究
- PS平均(濾鏡-模糊-平均)效果
- Photoshop實現Instagram Amaro濾鏡特效
- Photoshop實現Instagram之Nashville濾鏡
- Photoshop實現Instagram之Sierra濾鏡
- Photoshop實現Instagram之Mayfair濾鏡效果
- ZPhotoEngine超級算法庫
- 樂高像素拼圖特效
- 樂高像素拼圖特效濾鏡的代碼實現
- 保留細節的磨皮濾鏡之PS實現
- 保留細節的磨皮之C#程序實現
- 流行藝術風濾鏡特效PS實現
- PS圖層混合模式之明度模式