实例代码如下：import cv2# 读取图像image = cv2.imread('image.jpg')# 获取图像的宽高height, width = image.shape[:2]# 设置目标图像的新宽高new_width = 500new_height = int((new_width * height) / width)# 调整图像大小resized_image = cv2.resize(image, (new_width, new_height))# 展示调整...
image2X_INTER_NEAREST=image_resize(image,re_width,re_height,cv::INTER_NEAREST,num); DEBUG_TIME(T1); image2X_INTER_LINEAR=image_resize(image,re_width,re_height,cv::INTER_LINEAR,num); DEBUG_TIME(T2); image2X_INTER_AREA=image_resize(image,re_width,re_height,cv::INTER_AREA,num); DEBUG_...
;//区域插值,图像放大时类似于线性插值,图像缩小时可以避免波纹出现。31DEBUG_TIME(T3);32cv::resize(image, image2X_INTER_CUBIC, cv::Size(), scale, scale, cv::INTER_CUBIC);//三次样条插值33DEBUG_TIME(T4);3435DEBUG_PRINT("INTER_NEAREST:%3.3fms", RUN_TIME(T1 -T0));36DEBUG_PRINT("INTER_...
cout<<"front of the scale image.rows:"<< clone_frame.rows <<""<<"image.cols:"<< clone_frame.cols <<endl;doublescale =0.5;//放缩会导致图像失真,缩小时interpolation使用INTER_AREA,放大时使用INTER_LINEAR减少失真resize(clone_frame, clone_frame, Size(int(frame.cols *scale),int(frame.rows *...
resize(dstImage3,dstImage4,Size(dstImage3.cols*2,dstImage3.rows*2), (0,0)(0,0),1); // 显示效果图 imshow("【效果图一:原图缩小两倍】",dstImage1); imshow("【效果图二:效果一缩小两倍】",dstImage2); imshow("【效果图三:原图放大两倍】",dstImage3); ...
resize等比例缩放 代码语言:javascript 复制 importcv2 img=cv2.imread("800_600.jpg")print(img.shape)# 等比例缩放 height,width=img.shape[:2]size=(int(width*1.5),int(height*1.5))imgResize=cv2.resize(img,size)print(imgResize.shape)cv2.imshow("Image",imgResize)cv2.waitKey(0) ...
在OpenCV中,我们可以使用cv2.resize()函数来调整图像的尺寸。 以下是一个将图像放大两倍的例子: import cv2 # 加载图像 image = cv2.imread('image.jpg') # 获取图像的原始尺寸 height, width = image.shape[:2] # 定义放大后的尺寸 new_width = width * 2 new_height = height * 2 # 调整图像的尺寸...
# resize image resized =cv2.resize(img, dim, interpolation =cv2.INTER_AREA) print('Resized Dimensions : ',resized.shape) cv2.imshow("Resized image", resized) cv2.waitKey(0) cv2.destroyAllWindows() 结果: Original Dimensions : (149, 200, 4) ...
return cv2.resize(image, (width, height)) # 读取图片 img = cv2.imread("lenna.jpg") # 显示图片 cv2.imshow("img-org", img) cv2.imshow("img-scale-0.8", scale_image(img,0.8)) cv2.imshow("img-scale-2", scale_image(img,2))
OpenCV提供了resize函数来改变图像的大小,函数原型如下: 代码语言:javascript 复制 voidresize(InputArray src,OutputArray dst,Size dsize,double fx=0,double fy=0,int interpolation=INTER_LINEAR); 先解释一下各个参数的意思: src:输入,原图像,即待改变大小的图像; ...