School project: A program for linux written in C that reads camera data and scans for a red laser-dot.

[Q]-[Y], [A]-[H], [Z]-[ , ] can be used to change settings.
[Space] Captures and saves the current frame to a file.
[Tab] prints the name and value of all settings.
[Esc] Closes out of the program.

Pressing a key will print it's name and value.
If it is a bool it will also switch states upon being pressed.
If it is a float you can change it by pressing [ ↑ ] / [ ↓ ] while the key is held.
These settings can also be set using command-line arguments following the format [name]=[float]. Ex:

./release visualize=1 filter_hue=0.0 filter_sat=0.0 filter_val=0.0 scan_rad=1.2 skip_len=0

[Q] visualize: Visualize scan-strength of whole image, useful for configuring other settings.
[W] greyscale: Visualize total strength as greyscale or individual hsv strengths as rgb (if visualize is also true).
[E] verbose: Toggle verbose dot detection output.

Threshold for skipping pixels based on distance from ideal color.
(Warning: lowering these can severely impact performance.)
[R] filter_hue: ^
[T] filter_sat: ^
[Y] filter_val: ^

[A] scan_rad: Radius of pixels surrounding the target pixel to scan.
[S] skip_len: Amount of indices to skip after a valid pixel.
[D] sample_step: The minimal distance between each pixel sampled within scan_rad.

[F] dot_threshold: Minimum strength requirement for a pixel to be counted as a laser dot.
[G] alt_weights: Interpolates between two methods of calculating HSV weights.

HSV detection strength weights.
[Z] h_str: ^
[X] s_str: ^
[C] v_str: ^

Determines the impact of whites on the hue weights. Used to penalize overexposed regions.
[V] h_white_penalty: Maximum penalty for white regions.
[B] h_white_falloff: The distance from pure white that penalizing starts.
[N] h_white_curve: The exponent of the penalty multiplier.

[M] compare_threading: Whether to run both single-threaded and multi-threaded code and compare performance.
[ , ] thread_count: The amount of threads to use.