opencv Archives - IT Nursery

C++, Programming

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OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection

I successfully implemented the OpenCV square-detection example in my test application, but now need to filter the output, because it’s quite messy – ...

June 4, 2022
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Programming, Python

IT Nursery

ImportError: numpy.core.multiarray failed to import

I’m trying to run this program import cv2 import time cv.NamedWindow("camera", 1) capture = cv.CaptureFromCAM(0) while True: img = cv.QueryFrame(capture) cv.ShowImage("camera", img) if ...

June 3, 2022
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Programming, Python

IT Nursery

How to resize an image with OpenCV2.0 and Python2.6

I want to use OpenCV2.0 and Python2.6 to show resized images. I used and adopted this example but unfortunately, this code is for ...

May 30, 2022
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Programming, Python

IT Nursery

How to remove convexity defects in a Sudoku square?

I was doing a fun project: Solving a Sudoku from an input image using OpenCV (as in Google goggles etc). And I have ...

May 29, 2022
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Programming, Python

IT Nursery

Python – Extracting and Saving Video Frames

So I’ve followed this tutorial but it doesn’t seem to do anything. Simply nothing. It waits a few seconds and closes the program. ...

May 27, 2022
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image-processing, Programming

IT Nursery

Simple and fast method to compare images for similarity

I need a simple and fast way to compare two images for similarity. I.e. I want to get a high value if they ...

May 27, 2022
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image-processing, Programming

IT Nursery

Is there a way to detect if an image is blurry? [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so ...

May 27, 2022
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How do I install Python OpenCV through Conda?

I’m trying to install OpenCV for Python through Anaconda, but I can’t seem to figure this out. I tried conda install opencv conda ...

May 19, 2022
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How to crop an image in OpenCV using Python

How can I crop images, like I’ve done before in PIL, using OpenCV. Working example on PIL im = Image.open('0.png').convert('L') im = im.crop((1, ...

May 11, 2022
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Cannot find module cv2 when using OpenCV

I have installed OpenCV on the Occidentalis operating system (a variant of Raspbian) on a Raspberry Pi, using jayrambhia’s script found here. It ...

May 10, 2022
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