cv.IMREAD_GRAYSCALE:以灰度模式加载图像。可用整数0简单代替。 cv.IMREAD_UNCHANGED:加载图像,包括alpha通道。可用整数-1简单代替。 警告:即使图像路径错误,imread()也不会引发任何错误。但在后续对其操作时会出现错误。 例: import cv2 as cv img = cv.imread('cr7.jpg',-1); 1. 2. 1.2 图像显示 使用【...
parser.add_argument("img_input", help="read one image") # 保存图片的路径 parser.add_argument("img_output", help="save the picture") # 解析参数,以字典形式保存 args = vars(parser.parse_args()) # 加载图片 img = cv.imread(args["img_input"]) # 灰度处理 img_gray = cv.cvtColor(img,...
imwrite('messigray.png',img) cv2.destroyAllWindows() imread函数还可以定义加载的mode,默认是以RGB模式处理图片: 代码语言:javascript 复制 import cv2 grayImage = cv2.imread('MyPic.png', cv2.CV_LOAD_IMAGE_GRAYSCALE) # 可选参数CV_LOAD_IMAGE_COLOR (BGR), CV_LOAD_IMAGE_GRAYSCALE (grayscale), ...
1python复制代码 2# 读取图像 3 image = cv2.imread('path/to/your/image.jpg', cv2.IMREAD_GRAYSCALE) 4 5# 边缘检测(阈值1为50,阈值2为150) 6 edges = cv2.Canny(image, 50, 150) 7 8# 显示边缘检测后的图像 9 cv2.imshow('Edges', edges)10 cv2.waitKey(0)11 cv2.destroy...
elif k == ord(‘s’): # wait for ‘s’ key to save and exit cv2.imwrite(‘messigray.png’,img) cv2.destroyAllWindows() imread函数还可以定义加载的mode,默认是以RGB模式处理图片: import cv2 grayImage = cv2.imread(‘MyPic.png’, cv2.CV_LOAD_IMAGE_GRAYSCALE) ...
DEF#define CVVIMAGE_CLASS_DEF#include "opencv.hpp"/* CvvImage class definition */class CvvImage{public: CvvImage(); virtual ~CvvImage(); /* Create image (BGR or grayscale) */ virtual bool Create( int width, int height, int bits_per_pixel, int image_origin = 0 ); /* Load image ...
cv2.IMREAD_GRAYSCALE:读入灰度图片cv2.IMREAD_UNCHANGED:顾名思义,读入完整图片,包括alpha通道。用这个参数,如果原图是png格式的透明图片的话,就会完整读入了,这时候是RGBA图,如果是jpg图片,那么读取后就是一张RGB图。但是要注意这几个参数,读取图片后的这个返回对象有所不同,对于IMREAD_COLOR读取的对象,...
In the current implementation the alpha channel, if any, is stripped from the output image. Use negative value if you need the alpha channel. =0Return a grayscale image.如果是灰度图就用这个就好了。例如:cv2.imread'../data/empire.jpg',0) ...
elifk == ord('s'):# wait for 's' key to save and exit cv2.imwrite('messigray.png',img) cv2.destroyAllWindows() imread函数还可以定义加载的mode,默认是以RGB模式处理图片: importcv2 grayImage = cv2.imread('MyPic.png', cv2.CV_LOAD_IMAGE_GRAYSCALE) ...
IplImage* cur_img = cvLoadImage(file_vec[i],CV_LOAD_IMAGE_GRAYSCALE); //IplImage*cur_gray = cvCreateImage(cvGetSize(cur_img),cur_img->depth,1); cvResize(cur_img,standard,CV_INTER_AREA); //cvCvtColor(standard,cur_gray,CV_RGB2GRAY); ...