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Questions - lookup-tables

OpenCV Python: LUT for 16bit image?

I have been trying to learn some image processing on OpenCV python. I have a 16-bit image, and I would like to apply a LUT conversion on this 16-bit image without reducing it to 8-bit. From the docume...
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Bharath Vasudev

python

opencv

image-processing

lookup-tables

Votes: 0

Answers: 1

Latest Answer

As you've already discovered, the implementation of OpenCV's LUT method only supports 8-bit LUTs. However, you can implement your own for arbitrary bit resolutions and it's actually quite simple. Fo...
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rayryeng

C++, efficient way to call many possible functions from user

I'm relatively new to c++, mostly worked with python. I have a scenario where a user(me) uses a GUI to send commands to a microcontroller via serial, and then the microcontroller processes them. Right...
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Wscott

c++

struct

embedded

lookup-tables

Votes: 0

Answers: 3

Latest Answer

If you have the commands comming over the serial line in the format <command-mapped-to-a-number,...comma-separated-parameters...> we can simulate that like so: #include <iostream> #includ...
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Ted Lyngmo

How to convert lookup tables from txt to JSON

I have this .txt file which I need to convert to JSON. There are a lot of three dimensional lookup tables. I can change equal sign to colons, add quotes to the names of parameters etc. What I need is ...
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Mechatrnk

python

json

regex

string

lookup-tables

Votes: 0

Answers: 2

Latest Answer

The following piece of code does the exact you want import re with open("file.txt", "r") as f: content = f.read() # Remove all like '%arbitrary size' content = re.su...
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Artyom Vancyan

How can I properly build a sin lookup table with C?

To save performance on sin calls, and to handle integer angles, which are more portable manipulated and saved, instead of floating points as angles, I am building a sin lookup function, where 4096 uni...
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user16217248 - On Strike

c

trigonometry

lookup-tables

Votes: 0

Answers: 3

Latest Answer

This'd be like: float getSine(unsigned int angle) { angle &= 4095; // Reduce angle to the range of 1 circle if( (angle & 2048) == 0) { if( (angle & 1024) == 0) { ...
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Brendan

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