Questions tagged [reverse-engineering]

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What is the line encoding in this FSK signal

As a learning exercise, I'm trying to reverse engineer the radio protocol of a 27MHz wireless mouse. The device currently transmits on the 27.045MHz channel and uses 2FSK. I have an IQ recording of ...
6
votes
3answers
312 views

Protect an IIR filter from being reverse-engineered

I created a somewhat unique IIR filter and I want to protect the filter from being reverse-engineered I think you all know it is quite easy to get all the different weights of an IIR by using impulse ...
7
votes
2answers
967 views

What's the Underlying Algorithm for Detail Preserving Upsampling in Photoshop CC?

The detail-preserving upsampling algorithm in Photoshop CC is truly amazing. It can upscale any image while preserving details in almost real-time. And I truly wonder how it is implemented. I've ...
10
votes
2answers
2k views

What Is the Algorithm Behind Photoshop's “Black and White” Adjustment Layer?

Can someone explain the algorithm behind the "Black and White" adjustment layer in photoshop? I have to reproduce it using C++ for an application that emphasizes non-red/magenta(ish) pixels from an ...