stm32源码 ov7725二值化并能返回圆的圆心 -

#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "lcd.h"
#include "usart.h"
#include "string.h"
#include "ov7725.h"
#include "ov7670.h"
#include "tpad.h"
#include "timer.h"
#include "exti.h"
#include "usmart.h"
//由于OV7725传感器安装方式原因,OV7725_WINDOW_WIDTH相当于LCD的高度，OV7725_WINDOW_HEIGHT相当于LCD的宽度
//注意：此宏定义只对OV7725有效
#define OV7725_WINDOW_WIDTH 320 // <=320
#define OV7725_WINDOW_HEIGHT 240 // <=240
const u8*LMODE_TBL[6]={"Auto","Sunny","Cloudy","Office","Home","Night"};//6种光照模式
const u8*EFFECTS_TBL[7]={"Normal","Negative","B&W","Redish","Greenish","Bluish","Antique"}; //7种特效
extern u8 ov_sta; //在exit.c里面定义
extern u8 ov_frame; //在timer.c里面定义
//更新LCD显示(OV7725)
void OV7725_camera_refresh(void)
{
u32 i,j;
u16 color;
double X_FLAG=0.0,Y_FLAG=0.0;
int NUM_X=0,NUM_Y=0;
char FlagStatus;
if(ov_sta)//有帧中断更新
{
// u8 R=0x00,G=0x00,B=0x00;
// u16 RGB_Color=0x0000;
// float Max=0,Min=0;
// float Rhsv=0,Ghsv=0,Bhsv=0;
// float H=0,S=0,V=0;
//
//
// volatile u16 gray;
// u8 gm_red,gm_green,gm_blue;
LCD_Scan_Dir(U2D_L2R);//从上到下,从左到右
LCD_Set_Window((lcddev.width-OV7725_WINDOW_WIDTH)/2,(lcddev.height-OV7725_WINDOW_HEIGHT)/2,OV7725_WINDOW_WIDTH,OV7725_WINDOW_HEIGHT);//将显示区域设置到屏幕中央
if(lcddev.id==0X1963)
LCD_Set_Window((lcddev.width-OV7725_WINDOW_WIDTH)/2,(lcddev.height-OV7725_WINDOW_HEIGHT)/2,OV7725_WINDOW_HEIGHT,OV7725_WINDOW_WIDTH);//将显示区域设置到屏幕中央
LCD_WriteRAM_Prepare(); //开始写入GRAM
/*******/
OV7725_RRST=0; //开始复位读指针
OV7725_RCK_L;
OV7725_RCK_H;
OV7725_RCK_L;
OV7725_RRST=1; //复位读指针结束
OV7725_RCK_H;
for(i=0;i<240;i++,FlagStatus=0)
{
for(j=0;j<OV7725_WINDOW_WIDTH;j++)
{
// OV7725_RCK_L;
// color=GPIOC->IDR&0XFF; //读数据
// OV7725_RCK_H;
// color<<=8;
// OV7725_RCK_L;
// color|=GPIOC->IDR&0XFF; //读数据
// OV7725_RCK_H;
// R=color&0x001f;
// G=(color&0x0770)>>5;
// B=(color&0xf800)>>11;
// gm_red = (color & 0xF800) >> 8;
// gm_green = (color & 0x07E0) >> 3;
// gm_blue = (color & 0x001F) << 3;
// gray =(gm_red*77+gm_green*150+gm_blue*29+128)/256;
// gray=gray/8;
// color=(0x001f&gray)<<11;
// color=color|(((0x003f)&(gray*2))<<5);
// color=color|(0x001f&gray);
/*********/
if((i>=20&&i<220)&&(j>=20&&j<220))//100*100
{ OV7725_RCK_L;
color=GPIOC->IDR&0XFF; //YUYV输出读数据不读第二个字节
OV7725_RCK_H;
//color<<=8;
OV7725_RCK_L;
//color|=GPIOC->IDR&0XFF; //读数据
OV7725_RCK_H;
if(color>0x5F)
{
color=0xffff;//白色
}
else
{
FlagStatus=1;
NUM_Y++;
Y_FLAG+=j;
color=0x0000;//黑色
}
LCD->LCD_RAM=color;
}
else
{
OV7725_RCK_L;
OV7725_RCK_H;
OV7725_RCK_L;
OV7725_RCK_H;
LCD->LCD_RAM=0xffff;
}
// LCD->LCD_RAM=color;
// /*↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓RGB转HSV算法↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓*/
// Rhsv = (float) R/25/10; //RGB转换成0，1.
// Ghsv = (float) G/25/10;
// Bhsv = (float) B/25/10;
// Max = (Rhsv>Ghsv)?Rhsv:Ghsv;
// Max = (Max>Bhsv)?Max:Bhsv; //取RGB最大值
// Min = (Rhsv<Ghsv)?Rhsv:Ghsv;
// Min = (Min<Bhsv)?Min:Bhsv; //去RGB最小值
//
// if(Rhsv==Max) H = (Ghsv-Bhsv)/(Max-Min);
// if(Ghsv==Max) H = 2+(Bhsv-Rhsv)/(Max-Min);
// if(Bhsv==Max) H = 4+(Rhsv-Ghsv)/(Max-Min);
// H =(int) (H*60); //取H的数值
// if(H<0) H = H+360;
// V = (Rhsv>Ghsv)?Rhsv:Ghsv;
// V = (V>Bhsv)?V:Bhsv; //取V的数值
// S = (Max-Min)/Max; //取S的数值
// V = (int) (V*100);
// S = (int) (S*100);
// /*↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑RGB转HSV算法↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑*/
}
if(FlagStatus==1)
{
NUM_X++;
X_FLAG+=i;
}
}
Y_FLAG/=NUM_Y;
X_FLAG/=NUM_X;
ov_sta=0; //清零帧中断标记
ov_frame++;
/****/
LCD_Scan_Dir(DFT_SCAN_DIR); //恢复默认扫描方向
printf("X=%dY=%d\r\n",(int)X_FLAG,(int)Y_FLAG); //打印帧率
POINT_COLOR=WHITE;
LCD_Draw_Circle((int)X_FLAG,(int)Y_FLAG,2);
}
}
int main(void)
{
u8 lightmode=0,effect=0;
s8 saturation=0,brightness=0,contrast=0;
delay_init(); //延时函数初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置中断优先级分组为组2：2位抢占优先级，2位响应优先级
LCD_Init(); //初始化LCD
uart_init(115200);
OV7725_Init();
OV7725_Window_Set(OV7725_WINDOW_WIDTH,OV7725_WINDOW_HEIGHT,0);//VGA模式输出
OV7725_Light_Mode(lightmode);
OV7725_Color_Saturation(saturation);
OV7725_Brightness(brightness);
OV7725_Contrast(contrast);
OV7725_Special_Effects(effect);
OV7725_CS=0;
SCCB_WR_Reg(0xa6, 0x26);
SCCB_WR_Reg(0x60, 0x80);
SCCB_WR_Reg(0x61, 0x80);//黑白
TIM6_Int_Init(10000,7199);
EXTI8_Init(); //使能定时器捕获
while(1)
{
OV7725_camera_refresh();//更新显示
}
}

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