用-c-语言进行数字图像处理

用 c 语言进行数字图像处理 其实 数字图像处理有几步呢 一共三步 第一步 读入图片 第二步 处理图片 第三 步 保存图片 而第二步主要涉及的是处理图像的算法 所以 我在这里就不多说了 而第一步和第三步 是为第二步做 位图文件结构的声明 BMP h ifndef BMP H INCLUDED define BMP H INCLUDED typedef unsigned short WORD typedef unsigned long DWORD typedef long LONG typedef unsigned char BYTE typedef struct tagBITMAPFILEHEADER bmfh WORD bfType DWORD bfSize WORD bfReserved1 WORD bfReserved2 DWORD bfOffBits BITMAPFILEHEADER typedef struct tagBITMAPINFOHEADER bmih DWORD biSize LONG biWidth LONG biHeight WORD biPlanes WORD biBitCount DWORD biCompression DWORD biSizeImage LONG biXPelsPerMeter LONG biYPelsPerMeter DWORD biClrUsed DWORD biClrImportant BITMAPINFOHEADER typedef struct tagRGBQUAD rgbq BYTE rgbBlue BYTE rgbGreen BYTE rgbRed BYTE rgbReserved RGBQUAD typedef struct tagBITMAPINFO BITMAPINFOHEADER bmiHeader RGBQUAD bmiColors 1 BITMAPINFO endif BMP H INCLUDED 主程序 main c include include include include include include include BMP h BITMAPFILEHEADER bmfh BITMAPINFOHEADER bmih BYTE imgData bool bReadBMFH false bool bReadBMIH false bool bReadPixel false 检查路径是否合法 文件能打开 以 bmp 为后缀名 int CheckFilePath char filepath 读入位图的文件头 int ReadFileHeader char filepath BITMAPFILEHEADER bmfh 打印位图的文件头 void PrintFileHeader BITMAPFILEHEADER bmfh 读入位图的信息头 int ReadInfoHeader char filepath BITMAPINFOHEADER bmih 打印位图的信息头 void PrintInfoHeader BITMAPINFOHEADER bmih 创建 8 位位图的调色板 int CreatePalette RGBQUAD pal 读入位图的像素数据 int ReadPixelData char filepath BYTE imgData 计算每行像素所占的字节数 LONG GetLineBytes int imgWidth int bitCount 打印位图的像素数据 void PrintPixelData BYTE imgData int width int height int bitCount 打印菜单选项 void PrintMenu 另存为位图 int SaveAsImage char filepath 显示位图 void ShowImage char filepath 保存文件头 int SaveFileHeader FILE fp 保存信息头 int SaveInfoHeader FILE fp 保存调色板 int SaveColorPalette FILE fp 保存像素数据 int SavePixelData FILE fp int main char filepath 256 char saveasfilepath 256 int i int width int height int bitCount DWORD dwLineBytes int select int q 0 system echo off system color 2 printf TIMimage n printf Input the path of the BMP file n gets filepath i CheckFilePath filepath if i 1 return 1 do PrintMenu scanf u switch select case 0 printf Input the path of the BMP file n scanf s filepath CheckFilePath filepath break case 1 i ReadFileHeader filepath if i 1 printf Read the file header successfully n bReadBMFH true break else printf Read the file header failed n bReadBMFH false q 1 break case 2 i ReadInfoHeader filepath if i 1 printf Read the info header successfully n bReadBMIH true break else printf Read the info header failed n bReadBMIH false q 1 break case 3 if bReadBMIH printf Please read the info header at first n break height bmih biHeight width bmih biWidth bitCount bmih biBitCount dwLineBytes GetLineBytes width bitCount imgData BYTE malloc dwLineBytes height sizeof BYTE if imgData printf Can not allocate memory for the image n q 1 break i ReadPixelData filepath imgData if i 1 printf Read the pixel data failed n bReadPixel false q 1 break else printf Read the pixel data successfully n bReadPixel true break case 4 if bReadBMFH PrintFileHeader break else printf Please read the file header at first n break case 5 if bReadBMIH PrintInfoHeader break else printf Please read the info header at first n break case 6 if bReadPixel PrintPixelData imgData width height bitCount break else printf Please read the pixel data at first n break case 7 ShowImage filepath break case 8 printf Input the path ex d poon bmp you want to save n scanf s saveasfilepath i SaveAsImage saveasfilepath if i 1 printf Error failed to save the image n break break default q 1 break select 9527 while q 0 return 0 int ReadFileHeader char filepath BITMAPFILEHEADER bmfh FILE fp fp fopen filepath rb if fp printf Can not open the file s n filepath return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 fclose fp return 0 int ReadInfoHeader char filepath BITMAPINFOHEADER bmih FILE fp fp fopen filepath rb if fp printf Can not open the file s n filepath return 1 fseek fp 14 SEEK SET if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 if fread fclose fp return 1 fclose fp return 0 int CreatePalette RGBQUAD pal int i if sizeof pal sizeof RGBQUAD 256 printf The size of the palette must be 256 n return 1 for i 0 ibfOffBits printf bfReserved1 ld n bmfh bfReserved1 printf bfReserved2 ld n bmfh bfReserved2 printf bfSize ld n bmfh bfSize printf bfType ld n bmfh bfType void PrintInfoHeader BITMAPINFOHEADER bmih printf The content in the info header of the BMP file n printf biBitCount ld n bmih biBitCount printf biClrImportant ld n bmih biClrImportant printf biClrUsed ld n bmih biClrUsed printf biCompression ld n bmih biCompression printf biHeight ld n bmih biHeight printf biPlanes ld n bmih biPlanes printf biSize ld n bmih biSize printf biSizeImage ld n bmih biSizeImage printf biWidth ld n bmih biWidth printf biXPelsPerMeter ld n bmih biXPelsPerMeter printf biYPelsPerMeter ld n bmih biYPelsPerMeter LONG GetLineBytes int imgWidth int bitCount return imgWidth bitCount 31 32 4 void PrintPixelData BYTE imgData int width int height int bitCount int i int j int p DWORD dwLineBytes GetLineBytes width bitCount if bitCount 8 for i 0 i height i for j 0 j width j p imgData dwLineBytes height 1 i j printf d p printf n else if bitCount 24 for i 0 i height i for j 0 j width 3 j printf p imgData dwLineBytes height 1 i j printf d p j p imgData dwLineBytes height 1 i j printf d p j p imgData dwLineBytes height 1 i j printf d p printf n else printf Only supported 8 or 24 bits n int CheckFilePath char filepath FILE fp int len strlen filepath sizeof char char ext 3 if filepath 0 int strncpy ext if ext 0 b printf Error The extention of the filename must be bmp not BMP n return 1 fp fopen filepath r if fp printf Error The path is not correct n return 1 fclose fp else printf Error The path must not include blank space n return 1 return 0 void PrintMenu printf Choose Your Operation n printf 0 Input the image path n printf 1 Read the file header n printf 2 Read the info header n printf 3 Read the pixel data n printf 4 Print the file header n printf 5 Print the info header n printf 6 Print the pixel data n printf 7 View the original image n printf 8 Save as the image n printf other Exit the program n printf n int SaveAsImage char filepath FILE fp fp fopen filepath wb if fp printf Error can not create the file n return 1 SaveFileHeader fp SaveInfoHeader fp if bmih biBitCount 8 SaveColorPalette fp SavePixelData fp fclose fp printf Save As the image successfully n return 0 void ShowImage char filepath char cmd 266 strcpy cmd start strcat cmd filepath printf s n cmd system cmd int SaveFileHeader FILE fp if bReadBMFH printf Please read the file header at first n return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 return 0 int SaveInfoHeader FILE fp if bReadBMIH printf Please read the info header at first n return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose fp return 1 if fwrite fclose f