[photography] A quick note, I was rather late in getting UV filters for all of my lenses. They are a lot less expensive than lenses, and many people use them...

Exiftool is this neat command line utility written in perl that can pull out a bunch of the metadata associated with images acquired by consumer-type devices...

I have been using OpenCV’s Rect class a lot this week and needed to really know what was going on with it. I suspected that in the absence of explicitly for...

This is a photography post. I have a new long lens for my DSLR camera, and especially with moving subjects the autofocus just spins and spins and never ‘cov...

Today, I wanted to change the width on an image, in a webpage, that was written in Github-flavored Markdown. Like, groan. I had read this page at some pre...

Eigen, the matrix library in C++, is so cool. Having written some of these functions during the 00s in my own code, agonizing about whether I got the subsc...

Supposing you want to see a whole directory of images, resized and smooshed together into one image. (Having a crash? New section.) This is easily done in ...

I have a weird configuration, one older GPU that is unsupported by PyTorch and one newer GPU that is supported by PyTorch. With Docker, I was able to specify...

Ever wondered what all the possible arguments to mogrify, ImageMagick’s batch command are? Check out this link. Then, to rotate a directory of images, the co...

Igal Tabachnik had a shitpost about YAML on Twitter. I didn’t totally get it, so I keep reading and was rewarded with not only understanding the shitpost, bu...