Bought a camera (Leica SL) recently, and spent some time (and money) on some old Leica R lenses. One is 60mm f/2.8 macro with 1:1 adapter, one is 400mm f/6.8. I found both of them can be pretty good at …
Easy and cheap cluster building on AWS
Why?
It often requires a lot of computational resources to do machine learning / computer vision research, like extracting features from a lot of images, and training large-scale or many classifiers. Therefore people use more than one machines to do the task. The procedures are often like, copy executable/data files …
Build a Small-World Fish-Eye Style Panorama
Sometimes a small-world panorama is quite stunning. For comparison, a regular panorama is shown below.
Spent about half an hour to do experiments and finally get a program to convert to regular panorama to small-world style.
The key is coordinate system transform, from rectangular to polar. This is pretty intuitive …
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