C#分解和合成Gif图像的方法2008-03-20 21:49 一个Gif图像文件,是有几个文件进行合成的,因此处理此类文件的时候,不能像Jpeg或者Bmp文件那样处理。需要把Gif文件拆分帧的形式,然后对每一帧进行处理,处理完后再合成Gif。但是对于一个Gif进行拆分,其实Image对象本身就支持,例如对于一个Gif文件拆分成Jpeg文件方式,可以按照如下的方式进行处理。 using System.Drawing.Drawing2D; using System.Drawing.Imaging; Image imgGif = Image.FromFile(@"d:\test.gif"); //Create a new FrameDimension object from this image FrameDimension ImgFrmDim = new FrameDimension( imgGif.FrameDimensionsList[0] ); //Determine the number of frames in the image //Note that all images contain at least 1 frame, //but an animated GIF will contain more than 1 frame. int nFrameCount = imgGif.GetFrameCount( ImgFrmDim ); // Save every frame into jpeg format for( int i = 0; i < nFrameCount; i++ ) { imgGif.SelectActiveFrame( ImgFrmDim, i ); imgGif.Save( string.Format( @"d:\Frame{0}.jpg", i ), ImageFormat.Jpeg ); }
Image imgGif = Image.FromFile(@"d:\test.gif"); //Create a new FrameDimension object from this image FrameDimension ImgFrmDim = new FrameDimension( imgGif.FrameDimensionsList[0] ); //Determine the number of frames in the image //Note that all images contain at least 1 frame, //but an animated GIF will contain more than 1 frame. int nFrameCount = imgGif.GetFrameCount( ImgFrmDim );
// Save every frame into jpeg format for( int i = 0; i < nFrameCount; i++ ) { imgGif.SelectActiveFrame( ImgFrmDim, i ); imgGif.Save( string.Format( @"d:\Frame{0}.jpg", i ), ImageFormat.Jpeg ); }