C # Image Processing (5): Lossless Image Storage

C # image loss occurs when the image is saved using the default method. The following method is provided:

1 /// <summary> 2 /// lossless save picture 3 /// </Summary> 4 /// <Param name = "imgresult"> picture </param> 5 /// <Param name = "path"> saved path </param> 6 // <Param name = "imagetype"> image type, image/JPEG, image/PNG, image/GIF, image/tiff, image/BMP </param> 7 // <returns> </returns> 8 Public bool saveimage (image imgresult, string path, string imagetype) 9 {10 encoderparameter P; 11 encoderparameters pS; 12 try13 {14 PS = new encoderparameters (1); 15 16 p = new encoderparameter (system. drawing. imaging. encoder. quality, 100l); 17 ps. param [0] = P; 18 19 imagecodecinfo II = getcodecinfo (imagetype); 20 imgresult. save (path, II, PS); 21 imgresult. dispose (); 22} 23 catch (exception ex) 24 {25 return false; 26} 27 return true; 28} 29 30 // <summary> 31 // obtain the image encoding type 32 // </Summary> 33 // <Param name = "mimetype"> </param> 34 // <returns> </returns> 35 public imagecodecinfo getcodecinfo (string mimetype) 36 {37 imagecodecinfo [] codecinfo = imagecodecinfo. getimageencoders (); 38 foreach (imagecodecinfo ICI in codecinfo) 39 {40 if (ici. mimetype = mimetype) return ICI; 41} 42 return NULL; 43}