c语言提取图片yiq分量,请教C语言处理图像的问题

谁践踏了优雅 2022-10-16 01:52 173阅读 0赞

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代码:\#include

\#include

typedef struct tagBITMAPFILEHEADER

unsigned short bfType;        //The map type of this file, bmp should be BM

unsigned long bfSize;        //Size of this file

unsigned short bfReserved1;

unsigned short bfReserved2;

unsigned long bfOffBits;        //The offset of the data in bytes

\}BITMAPFILEHEADER;

typedef struct tagBIMAPINFOHEADER

unsigned long biSize;

unsigned long biWidth;        //Width of the picture

unsigned long biHeight;        //Height of the picture

unsigned short biPlanes;

unsigned short biBitCount;        //The bits used to represents a pixel

unsigned long biCompression;        //Type of compression

unsigned long biSizeImage;

unsigned long biXPelsPerMeter;

unsigned long biYPelsPerMeter;

unsigned long biClrUsed;

unsigned long biClrImportant;

\}BITMAPINFOHEADER;

typedef struct tagRGBQUAD

unsigned char rgbBlue;

unsigned char rgbGreen;

unsigned char rgbRed;

unsigned char rgbReserved;

\}RGBQUAD;

typedef struct tagBITMAPINFO

BITMAPINFOHEADER bmiHeader;

RGBQUAD bmiColors\[256\];

\}BITMAPINFO;

void main()\{

FILE \*fp;

FILE \*fp1;

char filename\[50\];        //The path of the file

BITMAPFILEHEADER bmpHeader1;

BITMAPINFO bmpHeader2;

//        RGBQUAD oldColor;

//        RGBQUAD        newColor;

unsigned int tempColor\[3\]=\{0,0,0\},oldColor1\[3\],newColor1\[3\];        //Used in 24-bits map calculation

int oldIndex=0,newIndex=0;        //Get the user input of color index

int        Index161 = 0,Index162 =0;        //Seperate 1 byte into two parts, used in 16-bit map

int i;        //Counter

int colorValue=0;        //Index read out from the file

printf("\\nPlease input the file path:");

gets(filename);

if((fp = fopen(filename,"rb")) == NULL)\{

printf("Failed tp open this file.\\n");

exit(1);

fp1 = fopen("modified.bmp","wb");

/\* The file header information\*/

fread(&bmpHeader1.bfType,2,1,fp);

fwrite(&bmpHeader1.bfType,2,1,fp1);

fread(&bmpHeader1.bfSize,4,1,fp);

fwrite(&bmpHeader1.bfSize,4,1,fp1);

fread(&bmpHeader1.bfReserved1,2,1,fp);

fwrite(&bmpHeader1.bfReserved1,2,1,fp1);

fread(&bmpHeader1.bfReserved2,2,1,fp);

fwrite(&bmpHeader1.bfReserved2,2,1,fp1);

fread(&bmpHeader1.bfOffBits,4,1,fp);

fwrite(&bmpHeader1.bfOffBits,4,1,fp1);

/\*The bitmap header information\*/

fread(&bmpHeader2.bmiHeader.biSize,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biSize,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biWidth,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biWidth,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biHeight,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biHeight,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biPlanes,2,1,fp);

fwrite(&bmpHeader2.bmiHeader.biPlanes,2,1,fp1);

fread(&bmpHeader2.bmiHeader.biBitCount,2,1,fp);

fwrite(&bmpHeader2.bmiHeader.biBitCount,2,1,fp1);

fread(&bmpHeader2.bmiHeader.biCompression,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biCompression,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biSizeImage,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biSizeImage,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biXPelsPerMeter,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biXPelsPerMeter,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biYPelsPerMeter,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biYPelsPerMeter,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biClrUsed,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biClrUsed,4,1,fp1);

fread(&bmpHeader2.bmiHeader.biClrImportant,4,1,fp);

fwrite(&bmpHeader2.bmiHeader.biClrImportant,4,1,fp1);

switch(bmpHeader2.bmiHeader.biBitCount)

/\*For the 2-bit map\*/

case 1:

fseek(fp,54L,0);

for(i=0;i<8;i++)

fread(&colorValue,1,1,fp);

fwrite(&colorValue,1,1,fp1);

printf("\\nThis image has 2 colors, which one do you want to change?(0 for black and 1 for white)");

while(scanf("%d",&oldIndex) != 1 || oldIndex != 0 || oldIndex != 1)

getchar();

printf("\\nIt's an invalid value! Please input again:");

switch(oldIndex)

case 0:

while(!feof(fp))

fread(&colorValue,1,1,fp);

if(colorValue != 255)

colorValue = 255;

fwrite(&colorValue,1,1,fp1);

break;

case 1:

while(!feof(fp))

fread(&colorValue,1,1,fp);

if(colorValue != 0)

colorValue = 0;

fwrite(&colorValue,1,1,fp1);

break;

/\*For the 16-bit color map\*/

case 4:

fseek(fp,54L,0);

printf("\\nThis is the color palette of this image.");

printf("\\nIndex Blue Green Red Reserved\\n");

for(i=0;i<16;i++)

fread(&bmpHeader2.bmiColors\[i\].rgbBlue,1,1,fp);

fread(&bmpHeader2.bmiColors\[i\].rgbGreen,1,1,fp);

fread(&bmpHeader2.bmiColors\[i\].rgbRed,1,1,fp);

fread(&bmpHeader2.bmiColors\[i\].rgbReserved,1,1,fp);

fwrite(&bmpHeader2.bmiColors\[i\].rgbBlue,1,1,fp1);

fwrite(&bmpHeader2.bmiColors\[i\].rgbGreen,1,1,fp1);

fwrite(&bmpHeader2.bmiColors\[i\].rgbRed,1,1,fp1);

fwrite(&bmpHeader2.bmiColors\[i\].rgbReserved,1,1,fp1);

printf("%3d %4u %4u %4u %4u\\n",i,bmpHeader2.bmiColors\[i\].rgbBlue,bmpHeader2.bmiColors\[i\].rgbGreen,bmpHeader2.bmiColors\[i\].rgbRed,bmpHeader2.bmiColors\[i\].rgbReserved);

printf("\\nPlease input the index of the old color(from 0 to 255):");

while(scanf("%d",&oldIndex) !=1 || oldIndex>15 || oldIndex<0)

getchar();

printf("\\nIt's an invalid value! Please input again:");

printf("\\nPlease input the index of the new color(from 0 to 15):");

while(scanf("%d",&newIndex) !=1 || newIndex>15 || newIndex<0)

getchar();

printf("\\nIt's an invalid value! Please input again:");

fseek(fp,bmpHeader1.bfOffBits,0);

while(!feof(fp))

fread(&colorValue,1,1,fp);

if(colorValue%16 == oldIndex)        //Get the first 4-bits of a byte

Index161 = newIndex;        //Check the index

else

Index161 = colorValue%16;

if(((colorValue-colorValue%16)/16) == oldIndex)        //Get the last 4-bits of a byte

Index162 = newIndex;

else

Index162 = (colorValue - colorValue%16)/16;

colorValue = Index162\*16+Index161;

fwrite(&colorValue,1,1,fp1);

break;

/\*For the 256-bit color map\*/

case 8:

fseek(fp,54L,0);

printf("\\nThis is the color palette of this image.");

printf("Index Blue Green Red Reserved\\n");

for(i=0;i<256;i++)        //Read out the RGBQUAD information and display the palette

fread(&bmpHeader2.bmiColors\[i\].rgbBlue,1,1,fp);

fread(&bmpHeader2.bmiColors\[i\].rgbGreen,1,1,fp);

fread(&bmpHeader2.bmiColors\[i\].rgbRed,1,1,fp);

fread(&bmpHeader2.bmiColors\[i\].rgbReserved,1,1,fp);

fwrite(&bmpHeader2.bmiColors\[i\].rgbBlue,1,1,fp1);

fwrite(&bmpHeader2.bmiColors\[i\].rgbGreen,1,1,fp1);

fwrite(&bmpHeader2.bmiColors\[i\].rgbRed,1,1,fp1);

fwrite(&bmpHeader2.bmiColors\[i\].rgbReserved,1,1,fp1);

printf("%3d %4u %4u %4u %4u\\n",i,bmpHeader2.bmiColors\[i\].rgbBlue,bmpHeader2.bmiColors\[i\].rgbGreen,bmpHeader2.bmiColors\[i\].rgbRed,bmpHeader2.bmiColors\[i\].rgbReserved);

printf("\\nPlease input the index of the old color(from 0 to 255):");

while(scanf("%d",&oldIndex) !=1 || oldIndex>255 || oldIndex<0)

getchar();

printf("\\nIt's an invalid value! Please input again:");

printf("\\nPlease input the index of the new color(from 0 to 255):");

while(scanf("%d",&newIndex) !=1 || newIndex>255 || newIndex<0)

getchar();

printf("\\nIt's an invalid value! Please input again:");

fseek(fp,bmpHeader1.bfOffBits,0);

while(!feof(fp))

fread(&colorValue,1,1,fp);

if(colorValue == oldIndex)