Interactive pixel information of an image

There a couple of different ways to go about this. You can monkey-patch ax.format_coord, similar to this official example. I’m going to use a slightly more “pythonic” approach here that doesn’t rely on global variables. (Note that I’m assuming no extent kwarg was specified, similar to the matplotlib example. To be fully general, you need … Read more

Python – Find dominant/most common color in an image

Here’s code making use of Pillow and Scipy’s cluster package. For simplicity I’ve hardcoded the filename as “image.jpg”. Resizing the image is for speed: if you don’t mind the wait, comment out the resize call. When run on this sample image, it usually says the dominant colour is #d8c865, which corresponds roughly to the bright … Read more

Is it possible to set a src attribute of an img tag in CSS?

Use content:url(“image.jpg”). Full working solution (Live Demo): <!doctype html> <style> .MyClass123{ content:url(“”); } </style> <img class=”MyClass123″/> Tested and working: Chrome 14.0.835.163 Safari 4.0.5 Opera 10.6 Firefox 100 & newer Tested and Not working: FireFox 40.0.2 (observing Developer Network Tools, you can see that the URL loads, but the image is not displayed) Internet Explorer 11.0.9600.17905 … Read more

How to use Image component in Next.js with unknown width and height

Yeah, you could use it with the layout=fill option you mentioned. On this case, you’re gonna need to set an “aspect ratio” for your images <div style={{ position: “relative”, width: “100%”, paddingBottom: “20%” }} > <Image alt=”Image Alt” src=”/image.jpg” layout=”fill” objectFit=”contain” // Scale your image down to fit into the container /> </div> You can … Read more

Remove spurious small islands of noise in an image – Python OpenCV

A lot of your questions stem from the fact that you’re not sure how morphological image processing works, but we can put your doubts to rest. You can interpret the structuring element as the “base shape” to compare to. 1 in the structuring element corresponds to a pixel that you want to look at in … Read more

Image scaling by CSS: is there a webkit alternative for -moz-crisp-edges?

WebKit now supports the CSS directive: image-rendering:-webkit-optimize-contrast; You can see it working in action using Chrome and the last image on this page: The rules used on that page are: .pixelated { image-rendering:optimizeSpeed; /* Legal fallback */ image-rendering:-moz-crisp-edges; /* Firefox */ image-rendering:-o-crisp-edges; /* Opera */ image-rendering:-webkit-optimize-contrast; /* Safari */ image-rendering:optimize-contrast; /* CSS3 Proposed */ … Read more

module’ object has no attribute ‘drawMatches’ opencv python

I am late to the party as well, but I installed OpenCV 2.4.9 for Mac OS X, and the drawMatches function doesn’t exist in my distribution. I’ve also tried the second approach with find_obj and that didn’t work for me either. With that, I decided to write my own implementation of it that mimics drawMatches … Read more