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New book found, Computer Vision for Visual Effects

I was just searching the key words “visual effect programming language”, interestingly I got the book as one of the result, Computer Vision for Visual Effects by Richard J. Radke. Then I think, Oh, THIS IS WHAT I AM GOING TO DO. Further researches return me a presentation of the author, at here. Maybe you can get the book from Amazon. Wish all TD or VFX supervisors can realise how Computer Vision researches advanced the VFX industry in all these years.

Binary format of the negative number for serial device programming

When I happens to program for a step motor controller, I found it uses positive/negative number formatted in 4 bytes to represent the rotating step number with the direction. In the manual it says the the device checks if the highest bit is 1, then the 4 bytes value represent a 31 bits available negative direction step number. However this is really about the signed number representations rather than check the highest bit.

Hello World, pelican!

Hellow World! I’m using the python based static blog generator, pelican. So I can create this article with vim ! And now test the pygments. first piece: #!/bin/bash echo "Hello, World!" second piece: def hello(): print "Hello, World!" third piece: #include <iostream> int main() { std::cout << "Hello, World!" << std::endl ; return 0 ; } fourth piece: #include <iostream> int main() { std::cout << "Hello, World!" << std::endl ; return 0 ; }