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2017-07-11 07:09:13 -0600 | commented question | Convert QPixmap to OpenCV image Maybe you are right but the main problem here to convert to right opencv format |
2017-07-11 06:51:33 -0600 | asked a question | Convert QPixmap to OpenCV image I have PyQt5 QPixmap. I want to convert it to the same format as cv2.VideoCapture returns. How to achieve this? I use OpenCV in Python3. |
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2017-06-03 13:05:27 -0600 | commented answer | How to find distance between centers of two green boxes? because cm count per pixel is different in these cases. distance in cm is the same, but in pixels it will change depends on your camera position. that's normal |
2017-06-03 08:24:09 -0600 | commented answer | How to find distance between centers of two green boxes? using your code. you wrote that you can find centers of boxes and seems that your code really can do this, just save coordinates cX, cY to appropiated variables |
2017-06-03 07:09:34 -0600 | answered a question | How to find distance between centers of two green boxes? For example, cX1 and cY1 are coordinates of center of first box, cX2 and cY2 are coordinates of center of second box. You can find the distance: If you know real sizes of boxes you can also compute distance in cm. But accuracy will be low. |
2017-06-03 06:56:54 -0600 | commented question | How to find distance between centers of two green boxes? you mean distance in pixels? |
2017-05-31 10:12:47 -0600 | answered a question | Capturing webcam in python This happens when for some reason cap.read() returns empty frame. just add a check: |
2017-05-23 11:14:07 -0600 | commented question | Python - Failure to import cv2: DLL load failed btw, seems that you are trying to use in Python37 opencv installed for Python34. Check if you're using correct python versin and make sure that python is in PATH |
2017-05-23 09:59:47 -0600 | commented question | Python - Failure to import cv2: DLL load failed download wheel and install it using pip: pip install path_to_wheel |
2017-05-22 12:20:34 -0600 | commented question | Python - Failure to import cv2: DLL load failed Are you limited in using 3.2.0? If no I suggest to try prebuilt wheels: http://www.lfd.uci.edu/~gohlke/python... |
2017-05-22 12:12:07 -0600 | commented question | opencv python merge different channel images into one 11 channels per single image? wow. seems that trivial cv2.merge() cannot do it. so probably slices? |
2017-05-05 16:17:31 -0600 | answered a question | cv2.videoCapture(filename) assigning filename dynamically 1) Check if file exists. Try to use absolute path there, and use '/' instead of '\' if you are on windows 2) According to docs:
It can be an issue too |
2017-05-05 16:05:12 -0600 | commented question | Store/print pixel-information after Object Detection is applied depends on what object you want to detect |
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2017-05-04 13:57:34 -0600 | answered a question | Tuning parameters for cv2.houghcircle() method ? Not sure that cv2.HoughCircles is the best option here. I recommend to try findContours also. Anyway question is about houghCircles, so example of code that detects all planets correctly: What I corrected in your code: set minimum distance between circles centers from 120 to 10, changed min and max radius for circle, changed param1 and param2. Also I adde check for case if no circles were found. Docs that I used: link Hope this helps! |
2017-04-26 11:02:41 -0600 | commented question | OpenCV Error: Assertion failed ((scn == 3 || scn == 4) && (depth == CV_8U || depth == CV_32F)) in cvtColor could you please provide code? are you sure that file that you try to open exists? try to show it using opencv and see what happens |
2017-04-25 12:45:51 -0600 | answered a question | Detecting Blue Color in this image I know it's too late, but this range works well for me: |
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2016-08-14 15:58:28 -0600 | commented answer | How to get Y, U, V from image thanks! i will try it |
2016-08-12 10:20:56 -0600 | commented question | How to get Y, U, V from image btw i don't sure that convertion works properly because saved on disc out_image looks strange |
2016-08-12 10:15:57 -0600 | commented question | How to get Y, U, V from image I need YUV420, not YUV. so BGR2YUV_I420, not BGR2YUV |
2016-08-12 09:46:06 -0600 | answered a question | Modulo cv2 has no attribute cv cv2.cv is in opencv2, not in opencv3+. just use cv2.what_do_you_want() instead of cv2.cv.what_do_you_want() |
2016-08-12 08:40:32 -0600 | asked a question | How to get Y, U, V from image I use OpenCV 3.0 in Python3.4. I have BGR image converted to YUV420: How to get Y, U, V values from out_image? |