STM32摄像头实验相关源码分享[一、颜色识别]

要每天养成写博客的习惯，可是，苦于最近学习没有进展啊。
无奈把自己去年学习STM32以及做相关项目时的代码发出来水水博客吧！
本代码在原子哥摄像头实验基础上做了相关更改。
color.c部分[用于设定颜色值、匹配颜色等]：

#include "color.h" #include "sys.h" #include "lcd.h" #include RESULT result; TARGET_CONDITION condition={ 60, //目标最小色度，H_MIN 110, //目标最大色度，H_MAX 50, //目标最小饱和度，S_MIN 240, //目标最大饱和度，S_MAX 60, //目标最小亮度，L_MIN 190, //目标最大亮度，L_MAX 40, //目标最小宽度，WIDTH_MIN 40, //目标最小高度，HEIGHT_MIN 320, //目标最大宽度，WIDTH_MAX 240 //目标最大高度，HEIGHT_MAX蟾叨龋琀EIGHT_MAX }; typedef struct //HLS颜色 { unsigned char Hue; //色度 ,[0,240] unsigned char Lightness; //亮度,[0,240] unsigned char Saturation; //饱和度,[0,240] }COLOR_HLS; typedef struct //RGB { unsigned char Red; // [0,255] unsigned char Green; // [0,255] unsigned char Blue; // [0,255] }COLOR_RGB; /**************************************/ //读取某点的颜色 static void ReadColor( uint16_t usX, uint16_t usY, COLOR_RGB* color_rgb ) { unsigned short rgb; rgb = LCD_ReadPoint( usX, usY ); //获取颜色数据 //转换成值域为[0,255]的三原色值 color_rgb->Red = (unsigned char)( ( rgb & 0xF800 ) >> 8 ); color_rgb->Green = (unsigned char)( ( rgb & 0x07E0 ) >> 3 ); color_rgb->Blue = (unsigned char)( ( rgb & 0x001F ) <Red; g = color_rgb->Green; b = color_rgb->Blue; max = maxOf3Values( r, g, b ); min = minOf3Values( r, g, b ); dif = max - min; //计算l，亮度 l = ( max + min ) * 240 / 255 / 2; //计算h，色度 if( max == min )//无定义 { s = 0; h = 0; } else { //计算色度 if( max == r ) { if( min == b )//h介于0到40 { h = 40 * ( g - b ) / dif; } else if( min == g )//h介于200到240 { h = 40 * ( g - b ) / dif + 240; } } else if( max == g ) { h = 40 * ( b - r ) / dif + 80; } else if( max == b ) { h = 40 * ( r - g ) / dif + 160; } //计算饱和度 if( l == 0 ) { s = 0; } else if( l Hue = h; //色度 color_hls->Lightness = l; //亮度 color_hls->Saturation = s; //饱和度 } /************************************************/ // 颜色匹配 //color_hls ：COLOR_HLS结构体，存储HLS格式颜色数据 // condition ：TARGET_CONDITION结构体，存放希望的颜色数据阈值 // 1：像素点颜色在目标范围内；0：像素点颜色不在目标范围内。 static int ColorMatch(const COLOR_HLS* color_hls, const TARGET_CONDITION* condition ) { if( color_hls->Hue > condition->H_MIN && color_hls->Hue H_MAX && color_hls->Lightness > condition->L_MIN && color_hls->Lightness L_MAX && color_hls->Saturation > condition->S_MIN && color_hls->Saturation S_MAX ) return 1; else return 0; } /****************************************************/ // 寻找腐蚀中心 // x ：腐蚀中心x坐标 // y ：腐蚀中心y坐标 // condition ：TARGET_CONDITION结构体，存放希望的颜色数据阈值 // area ：SEARCH_AREA结构体，查找腐蚀中心的区域 // 1：找到了腐蚀中心，x、y为腐蚀中心的坐标；0：没有找到腐蚀中心。 static int SearchCenter(unsigned int* x, unsigned int* y, const TARGET_CONDITION* condition, SEARCH_AREA* area ) { unsigned int i, j, k; unsigned int FailCount=0; unsigned int SpaceX, SpaceY; COLOR_RGB rgb; COLOR_HLS hls; SpaceX = condition->WIDTH_MIN / 3; SpaceY = condition->HEIGHT_MIN / 3; for(i=area->Y_Start; iY_End; i+=SpaceY) { for(j=area->X_Start; jX_End; j+=SpaceX) { FailCount = 0; for(k=0; k<SpaceX+SpaceY; k++) { if(k( (SpaceX+SpaceY) >> ALLOW_FAIL_PER )) break; } if(k == SpaceX+SpaceY) { *x = j + SpaceX / 2; *y = i + SpaceY / 2; return 1; } } } return 0; } /***************************************************/ // 从腐蚀中心向外腐蚀，得到新的腐蚀中心 // oldX ：先前的腐蚀中心x坐标 // oldX ：先前的腐蚀中心y坐标 // condition ：TARGET_CONDITION结构体，存放希望的颜色数据阈值 // result ：RESULT结构体，存放检测结果 // 1：检测成功；0：检测失败。 static int Corrode(unsigned int oldX, unsigned int oldY, const TARGET_CONDITION* condition, RESULT* result ) { unsigned int Xmin, Xmax, Ymin, Ymax; unsigned int i; unsigned int FailCount=0; COLOR_RGB rgb; COLOR_HLS hls; for(i=oldX; i>IMG_X; i--) { ReadColor(i, oldY, &rgb); RGB2HSL(&rgb, &hls); if(!ColorMatch(&hls, condition)) FailCount++; if(FailCount>(((condition->WIDTH_MIN+condition->WIDTH_MAX)>>2)>>ALLOW_FAIL_PER)) break; } Xmin=i; FailCount=0; for(i=oldX; i(((condition->WIDTH_MIN+condition->WIDTH_MAX)>>2)>>ALLOW_FAIL_PER)) break; } Xmax=i; FailCount=0; for(i=oldY; i>IMG_Y; i--) { ReadColor(oldX, i, &rgb); RGB2HSL(&rgb, &hls); if(!ColorMatch(&hls, condition)) FailCount++; if(FailCount>(((condition->HEIGHT_MIN+condition->HEIGHT_MAX)>>2)>>ALLOW_FAIL_PER)) break; } Ymin=i; FailCount=0; for(i=oldY; i(((condition->HEIGHT_MIN+condition->HEIGHT_MAX)>>2)>>ALLOW_FAIL_PER)) break; } Ymax=i; FailCount=0; result->x = (Xmin + Xmax) / 2; result->y = (Ymin + Ymax) / 2; result->w = (Xmax - Xmin); result->h = (Ymax - Ymin); if( (result->w > condition->WIDTH_MIN) && (result->w WIDTH_MAX) && (result->h > condition->HEIGHT_MIN) && (result->h HEIGHT_MAX) ) return 1; else return 0; } int Trace(const TARGET_CONDITION* condition, RESULT* result_final) { unsigned int i; static unsigned int x0, y0, Flag = 0; static SEARCH_AREA area = {IMG_X, IMG_X+IMG_W, IMG_Y, IMG_Y+IMG_H}; RESULT result; if(Flag == 0) { if(SearchCenter(&x0, &y0, condition, &area)) { Flag = 1; } else { area.X_Start = IMG_X; area.X_End = IMG_X+IMG_W; area.Y_Start = IMG_Y; area.Y_End = IMG_Y+IMG_H; if(SearchCenter(&x0, &y0, condition, &area)) { Flag = 0; return 0; } } } result.x = x0; result.y = y0; for(i=0; ix = result.x; result_final->y = result.y; result_final->w = result.w; result_final->h = result.h; Flag = 1; area.X_Start = result.x - ((result.w)>>1); area.X_End = result.x + ((result.w)>>1); area.Y_Start = result.y - ((result.h)>>1); area.Y_End = result.y + ((result.h)>>1); return 1; } else { Flag = 0; return 0; } }

main.c部分：

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