目录

note

code

test

---

note

// g(x,y) = a * f(x,y) + b

code

void line_convert_fun(uchar& in, uchar& out) {
	out = -1 * in + 255;
}
void img_line_convert(Mat& src, Mat& res) {
	if (src.empty()) {

		printf("src empty\n");
		return;
	}
	int src_rows = src.rows;
	int src_cols = src.cols;
	res = Mat(src_rows, src_cols, CV_8UC1);
	for (int i = 0; i < src_rows; ++i) {
		for (int j = 0; j < src_cols; ++j) {
			line_convert_fun(src.at<uchar>(i,j), res.at<uchar>(i,j));
		}
	}
}

test