MoveDetect Namespace Reference

Classes
class	Handler
	This class is used to store some image thumbnails, configuration settings, and also contains the detect() method which is used to determine if a video frame has movement. More...

Typedefs
typedef std::map< size_t, cv::Mat >	ControlMap
	We keep several control thumbnail images to compare against. More...

Functions
double	psnr (const cv::Mat &src, const cv::Mat &dst)
	Peak Signal To Noise is an algorithm which as a side effect can be used to compare two similar images. More...
cv::Mat	simple_colour_balance (const cv::Mat &src)
	Simple colour balancing. More...

Typedef Documentation

ControlMap

typedef std::map<size_t, cv::Mat> MoveDetect::ControlMap

We keep several control thumbnail images to compare against.

This typedef defines the map that tracks these thumbnails. The key is the frame index, the value is the thumbnail itself.

Function Documentation

psnr()

double MoveDetect::psnr	(	const cv::Mat &	src,
		const cv::Mat &	dst
	)

Peak Signal To Noise is an algorithm which as a side effect can be used to compare two similar images.

Source: https://docs.opencv.org/master/d5/dc4/tutorial_video_input_psnr_ssim.html

Returns

Values higher than 30 indicate very similar images. Values < 30 indicate changes were detected. The closer to zero, the more changes have been detected.

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simple_colour_balance()

cv::Mat MoveDetect::simple_colour_balance

(

const cv::Mat &

src

)

Simple colour balancing.

• Source: https://stackoverflow.com/a/49481583/13022
• Source: http://web.stanford.edu/~sujason/ColorBalancing/simplestcb.html
• Source: http://www.morethantechnical.com/2015/01/14/simplest-color-balance-with-opencv-wcode/