如何将上述代码更改为将输入图像二值化处理
时间: 2024-02-26 22:56:36 浏览: 14
要将输入图像二值化处理,可以将原来的取反操作改为阈值化操作。具体实现步骤如下:
1. 定义一个阈值变量`threshold`,用于控制二值化的阈值。
2. 对每个像素进行处理,具体实现是将B、G、R三个分量的值相加,然后与阈值比较。如果大于阈值,则将该像素设置为白色(即B、G、R三个分量的值都为255),否则将该像素设置为黑色(即B、G、R三个分量的值都为0)。
3. 最后将处理后的像素存储到输出图像中,并将输出图像的宽和高分别存储到`param2`结构体的成员变量中,并返回0表示处理成功。
下面是修改后的代码:
```
int ljz_alg_process(c674x_inverse_t *handle, image_inverse_frame_t *param1, image_inverse_state_t *param2) {
c674x_inverse_t *c674x_inverse = handle;
int i, j;
int width = c674x_inverse->width;
int height = c674x_inverse->height;
int threshold = 128; // 定义阈值为128
/*1.************packed BGR to B, G and R planar********************/
pkRGB2plRGB(param1->pInImage,
c674x_inverse->pImgSrcB,
c674x_inverse->pImgSrcG,
c674x_inverse->pImgSrcR,
width, height);
/*2.******************** process the pixels************************/
for (i = 0; i < height; i++) {
unsigned char *pSrcRowB = c674x_inverse->pImgSrcB + i * width;
unsigned char *pSrcRowG = c674x_inverse->pImgSrcG + i * width;
unsigned char *pSrcRowR = c674x_inverse->pImgSrcR + i * width;
unsigned char *pDstRowB = c674x_inverse->pImgDstB + i * width;
unsigned char *pDstRowG = c674x_inverse->pImgDstG + i * width;
unsigned char *pDstRowR = c674x_inverse->pImgDstR + i * width;
for (j = 0; j < width; j++) {
int sum = pSrcRowB[j] + pSrcRowG[j] + pSrcRowR[j];
if (sum > threshold) {
pDstRowB[j] = 255;
pDstRowG[j] = 255;
pDstRowR[j] = 255;
} else {
pDstRowB[j] = 0;
pDstRowG[j] = 0;
pDstRowR[j] = 0;
}
}
}
/*3.****************planar B, G and R to packed BGR******************/
plRGB2pkRGB(param1->pOutData,
c674x_inverse->pImgDstB,
c674x_inverse->pImgDstG,
c674x_inverse->pImgDstR,
width, height);
/* 将输出图像的宽和高分别存储到param2结构体的成员变量中 */
param2->width = width;
param2->height = height;
/* 返回0表示处理成功 */
return 0;
}
```