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One of my favorite photography techniques is long exposure, the process of creating a photo that shows the effect of passing time, something that traditional photography does not capture. When applying this technique, water becomes silky smooth, stars in a…
Read More of Long exposure with OpenCV and Python
Today’s blog post is Part II in our two part series on OCR’ing bank check account and routing numbers using OpenCV, Python, and computer vision techniques. Last week we learned how to extract MICR E-13B digits and symbols from input…
Read More of Bank check OCR with OpenCV and Python (Part II)
Today’s blog post is inspired by Li Wei, a PyImageSearch reader who emailed me last week and asked: Hi Adrian, Thank you for the PyImageSearch blog. I read it each week and look forward to your new posts every Monday.…
Read More of Bank check OCR with OpenCV and Python (Part I)
Today’s blog post is a continuation of our recent series on Optical Character Recognition (OCR) and computer vision. In a previous blog post, we learned how to install the Tesseract binary and use it for OCR. We then learned how…
Read More of Credit card OCR with OpenCV and Python
Last updated on Feb 13, 2024. In last week’s blog post we learned how to install the Tesseract binary for Optical Character Recognition (OCR). We then applied the Tesseract program to test and evaluate the performance of the OCR engine…
Read More of Using Tesseract OCR with Python
Today’s blog post is part one in a two part series on installing and using the Tesseract library for Optical Character Recognition (OCR). OCR is the automatic process of converting typed, handwritten, or printed text to machine-encoded text that we…
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After our previous post on computing image colorfulness was published, Stephan, a PyImageSearch reader, left a comment on the tutorial asking if there was a method to compute the colorfulness of specific regions of an image (rather than the entire…
Read More of Labeling superpixel colorfulness with OpenCV and Python
Last updated on July 7, 2021. In a previous PyImageSearch blog post, I detailed how to compare two images with Python using the Structural Similarity Index (SSIM). Using this method, we were able to easily determine if two images were…
Read More of Image Difference with OpenCV and Python
Today’s blog post is inspired by a question I received from a PyImageSearch reader on Twitter, @makingyouthink. Paraphrasing the tweets myself and @makingyouthink exchanged, the question was: Have you ever seen a Python implementation of Measuring colourfulness in natural images…
Read More of Computing image “colorfulness” with OpenCV and Python
