据测速能达到 200iter/s,而用 cv2 方法获取则只有 36iter/s。 importosimportos.pathasospfromtqdmimporttqdmdefread_jpg_img_size(path):withopen(path,'rb')asf:f.read(163)h=int.from_bytes(f.read(2),'big')w=int.from_bytes(f.read(2),'big')returnh,wimg_dir='path/to/your/image'img_li...
img_path = osp.join(img_dir, img_name) img_size = read_jpg_img_size(img_path) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 2.2 采用特定 python 包读取 直接用 imagesize 包读取。测速结果为 700iter/s,特别推荐这种方法。其加速原理待有空探究。
from PIL import Image def main(): filename = 'Z:/360pic/116_0618/IMGP3828.JPG' img = Image.open(filename) imgSize = img.size #图片的长和宽 print imgSize maxSize = max(imgSize) #图片的长边 print maxSize minSize = min(imgSize) #图片的短边 print minSize if __name__ == '__...
): """ COCO dataset initialization. Annotation data are read into memory by COCO API. ...
defrandom_crop(image_ref,image_dis,num_output,size):h,w=image_ref.shape[:2]random_h=np.random.randint(h-size,size=num_output)random_w=np.random.randint(w-size,size=num_output)patches_dis=[]patches_ref=[]foriinrange(num_output):patch_dis=image_dis[random_h[i]:random_h[i]+size,...
Image.MAX_IMAGE_PIXELS=None imgName='test.jpg'#imgName = input("请输入图片名称:\n")orgin_photo = Image.open(imgName)#读取img文件w, h= orgin_photo.size#获取原尺寸图片大小orgin_photo.thumbnail= ((w // 5, h // 5))#图片进行20%的压缩#orgin_photo.thumbnail = ((w // 2, h // ...
我们可以逐帧的读取视频信息。编写一个while循环,使用capture的read方法。read方法将会返回2个结果,一个是是否正确读取时的布尔值,一个是帧图像: 代码语言:javascript 复制 while(True):ret,frame=capture.read()ifnot ret:break 以上代码中,ret是读取的正确与否,frame是帧图像。若ret不正确则会直接跳出循环。这时...
Image.NEAREST :低质量 Image.BILINEAR:双线性 Image.BICUBIC :三次样条插值 Image.ANTIALIAS:高质量 获取图片属性: import osfrom PIL import Imagepath = os.path.join(os.getcwd(),"d:\\ccb.png")img = Image.open(path)>>> print(img.format)PNG>>> print(img.size)(3307, 2244)>>> print(img....
fromkeras.preprocessingimportimage# read imageraw_image = image.load_img("panda.jpg", target_size=(128,128))# image to arrayimage_array = image.img_to_array(raw_image)# array to imageimage_output = image.array_to_img(image_array)# save imageimage_output.save("new_panda.jpg") ...
('"<<filename<<"'): can't read header: unknown exception"<<std::endl<<std::flush;return0;}// established the required input image sizeSize size=validateInputImageSize(Size(decoder->width(),decoder->height()));// grab the decoded typeinttype=decoder->type();if((flags&IMREAD_LOAD_...