OpenCV

How do I save a cv2 processed image to django models?

由 我与影子孤独终老i 提交于 2020-12-10 12:12:31
问题 I use opencv to crop images and I'd like to save them to the models, I load the file directly to computeLogoFromMemoryFILE where it is processed, from there how can I save the image to TempImage model? views.py: form = myForm(request.FILES) if form.is_valid(): cropped_image = computeLogoFromMemoryFILE(request.FILES.get('logo')) # ... temp_image = TempImage.objects.create(image=?) cv2: # (np == numpy) def computeLogoFromMemoryFILE(logo): logo.seek(0) image = cv2.imdecode(np.fromstring(logo

Is there any method to change the icon for the imshow() window?

由 这一生的挚爱 提交于 2020-12-10 08:23:16
问题 That's the default cv2.imshow() window icon: I'm finishing up a basic project, but want to make it look cleaner by changing the window icon that is displayed. I know it can be done with Tkinter windows, but I wanted to see if there was a more direct way to do it with just the OpenCV library. 回答1: You can't do that using only OpenCV. Its High-level GUI only supports minimal functionality, cf. the detailed description: While OpenCV was designed for use in full-scale applications and can be used

Is there any method to change the icon for the imshow() window?

由 天大地大妈咪最大 提交于 2020-12-10 08:21:11
问题 That's the default cv2.imshow() window icon: I'm finishing up a basic project, but want to make it look cleaner by changing the window icon that is displayed. I know it can be done with Tkinter windows, but I wanted to see if there was a more direct way to do it with just the OpenCV library. 回答1: You can't do that using only OpenCV. Its High-level GUI only supports minimal functionality, cf. the detailed description: While OpenCV was designed for use in full-scale applications and can be used

Is there any method to change the icon for the imshow() window?

由 寵の児 提交于 2020-12-10 08:18:58
问题 That's the default cv2.imshow() window icon: I'm finishing up a basic project, but want to make it look cleaner by changing the window icon that is displayed. I know it can be done with Tkinter windows, but I wanted to see if there was a more direct way to do it with just the OpenCV library. 回答1: You can't do that using only OpenCV. Its High-level GUI only supports minimal functionality, cf. the detailed description: While OpenCV was designed for use in full-scale applications and can be used

ImportError: cannot import name 'dnn_superres' for python example of super resolution with opencv

由 我只是一个虾纸丫 提交于 2020-12-10 06:58:32
问题 I am trying to run an example for upscaling images from the following website: https://towardsdatascience.com/deep-learning-based-super-resolution-with-opencv-4fd736678066 This is the code I am using: import cv2 from cv2 import dnn_superres # Create an SR object sr = dnn_superres.DnnSuperResImpl_create() # Read image image = cv2.imread('butterfly.png') # Read the desired model path = "EDSR_x3.pb" sr.readModel(path) # Set the desired model and scale to get correct pre- and post-processing sr

Using MTCNN with a webcam via OpenCV

由 旧时模样 提交于 2020-12-10 05:26:18
问题 I wish to be able to use a webcam and utilize MTCNN as the primary facial detector. Just as one can use Haar Cascades, I want to use MTCNN to find faces on my webcam This video is about breaking MTCNN, but nonetheless provides insight into my goal: https://www.youtube.com/watch?v=OY70OIS8bxs Here is my code so far. It used to be so that the plot would show and I'd have to "X" it out but now it just doesn't work from mtcnn.mtcnn import MTCNN import cv2 as cv from matplotlib import pyplot from

保边滤波之Mean shift filter

由 ﹥＞﹥吖頭↗ 提交于 2020-12-08 16:29:00
Mean shift filter 目录 Mean shift filter 一、算法原理 二、练手实现的算法代码如下： 三、实现结果 一、算法原理 在OpenCV中，meanshift filter函数为 pyrMeanShiftFiltering， 它的函数调用格式如下： C++: void pyrMeanShiftFiltering(InputArray src , OutputArray dst , double sp , double sr , int maxLevel =1, TermCriteria termcrit =TermCriteria( TermCriteria::MAX_ITER+TermCriteria::EPS,5,1) ) Parameters: src – The source 8-bit, 3-channel image. //三通道的输入图像 dst – The destination image of the same format and the same size as the source. //相同尺寸格式输出图像 sp – The spatial window radius. //空间域半径 sr – The color window radius. //颜色域半径 maxLevel – Maximum level of the

OpenCV AttributeError module 'cv2.cv2' has no attribute 'Tracker_create'

由 我怕爱的太早我们不能终老 提交于 2020-12-08 07:09:45
问题 I have tried to run this code but get an Attribute Error. Any help would be greatly appreciated. import cv2 import sys (major_ver, minor_ver, subminor_ver) = (cv2.__version__).split('.') if __name__ == '__main__': # Set up tracker. # Instead of MIL, you can also use tracker_types = ['BOOSTING', 'MIL','KCF', 'TLD', 'MEDIANFLOW', 'CSRT', 'MOSSE'] tracker_type = tracker_types[5] if int(minor_ver) < 3: tracker = cv2.cv2.Tracker_create(tracker_type) else: if tracker_type == 'BOOSTING': tracker =

OpenCV AttributeError module 'cv2.cv2' has no attribute 'Tracker_create'

由 旧街凉风 提交于 2020-12-08 07:09:40
问题 I have tried to run this code but get an Attribute Error. Any help would be greatly appreciated. import cv2 import sys (major_ver, minor_ver, subminor_ver) = (cv2.__version__).split('.') if __name__ == '__main__': # Set up tracker. # Instead of MIL, you can also use tracker_types = ['BOOSTING', 'MIL','KCF', 'TLD', 'MEDIANFLOW', 'CSRT', 'MOSSE'] tracker_type = tracker_types[5] if int(minor_ver) < 3: tracker = cv2.cv2.Tracker_create(tracker_type) else: if tracker_type == 'BOOSTING': tracker =

What is the opposite of cv2.VideoWriter_fourcc?

由 拈花ヽ惹草 提交于 2020-12-08 06:47:26
问题 The function cv2.VideoWriter_fourcc converts from a string (four chars) to an int. For example, cv2.VideoWriter_fourcc(*'MJPG') gives an int for codec MJPG (whatever that is). Does cv2 provide the opposite function? I'd like to display the value as a string. I'd like to get a string from a fourcc int value. I could write the conversion myself, but I'd use something from cv2 if it exists. 回答1: I don't think cv2 has that conversion. Here is how to convert from fourcc numerical code to fourcc
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