I successfully implemented the OpenCV square-detection example in my test application, but now need to filter the output, because it’s quite messy – or is my code wrong? I’m interested in the four corner points of the paper for skew reduction (like that) and further processing … Input & Output: Original image: click Code: double angle( … Read more
I’ve been bashing my face into this one for literally days now and even though I feel constantly that I am right on the edge of revelation, I simply cannot achieve my goal. I thought, ahead of time in the conceptual phases of my design, that it would be a trivial matter to grab a … Read more
Currently in an Android application that I’m developing I’m looping through the pixels of an image to blur it. This takes about 30 seconds on a 640×480 image. While browsing apps in the Android Market I came across one that includes a blur feature and their blur is very fast (like 5 seconds) so they … Read more
How can I get the difference between two images? I have the original image. Someone has written on an exact duplicate of the original image. Now, I need to compare the original to the written on image and extract just the writing in image format. Example: I have a picture of a house. Someone took … Read more
After my previous question on finding toes within each paw, I started loading up other measurements to see how it would hold up. Unfortunately, I quickly ran into a problem with one of the preceding steps: recognizing the paws. You see, my proof of concept basically took the maximal pressure of each sensor over time … Read more
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 OpenCV2.1 and does not seem to be working on 2.0. Here my code: import os, glob import cv ulpath = “exampleshq/” for infile in glob.glob( os.path.join(ulpath, “*.jpg”) ): im = cv.LoadImage(infile) thumbnail … Read more
I have a transparent png image “foo.png” and I’ve opened another image with im = Image.open(“foo2.png”); now what i need is to merge foo.png with foo2.png. ( foo.png contains some text and I want to print that text on foo2.png ) 8 Answers 8
Here’s what I would like to do: I’m taking pictures with a webcam at regular intervals. Sort of like a time lapse thing. However, if nothing has really changed, that is, the picture pretty much looks the same, I don’t want to store the latest snapshot. I imagine there’s some way of quantifying the difference, … Read more
I need a simple and fast way to compare two images for similarity. I.e. I want to get a high value if they contain exactly the same thing but may have some slightly different background and may be moved / resized by a few pixel. (More concrete, if that matters: The one picture is an … Read more
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year. Improve this question I was wondering if there is a way to determine if an image is blurry or … Read more
