Region of Interest (ROI) Computation

Functions
cv::Rect RTABMAP_CORE_EXPORT	rtabmap::util2d::computeRoi (const cv::Mat &image, const std::string &roiRatios)
	Computes a region of interest (ROI) in the image using string-defined ratios.
cv::Rect RTABMAP_CORE_EXPORT	rtabmap::util2d::computeRoi (const cv::Size &imageSize, const std::string &roiRatios)
	Computes a region of interest (ROI) from an image size and a string of ratios.
cv::Rect RTABMAP_CORE_EXPORT	rtabmap::util2d::computeRoi (const cv::Mat &image, const std::vector< float > &roiRatios)
	Computes a region of interest (ROI) in the image using float vector-defined ratios.
cv::Rect RTABMAP_CORE_EXPORT	rtabmap::util2d::computeRoi (const cv::Size &imageSize, const std::vector< float > &roiRatios)
	Computes a region of interest (ROI) using float ratios and the image size.

Detailed Description

Functions to compute the ROI in an image using ratio-based cropping.

Function Documentation

computeRoi() [1/4]

cv::Rect RTABMAP_CORE_EXPORT rtabmap::util2d::computeRoi	(	const cv::Mat &	image,
		const std::string &	roiRatios
	)

Computes a region of interest (ROI) in the image using string-defined ratios.

Parameters

image	Input image.
roiRatios	A string of 4 space-separated float values representing the ROI ratios: left, right, top, bottom. Each ratio should be between 0 and 1. For example, "0.1 0.1 0.2 0.2" removes 10% from the left/right and 20% from the top/bottom.

Returns

A cv::Rect defining the ROI, or an empty rectangle if input is invalid.

computeRoi() [2/4]

cv::Rect RTABMAP_CORE_EXPORT rtabmap::util2d::computeRoi	(	const cv::Size &	imageSize,
		const std::string &	roiRatios
	)

Computes a region of interest (ROI) from an image size and a string of ratios.

Parameters

imageSize	The size of the image (width x height).
roiRatios	A string with 4 space-separated float values indicating cropping ratios: left, right, top, bottom.

Returns

The computed ROI rectangle.

computeRoi() [3/4]

cv::Rect RTABMAP_CORE_EXPORT rtabmap::util2d::computeRoi	(	const cv::Mat &	image,
		const std::vector< float > &	roiRatios
	)

Computes a region of interest (ROI) in the image using float vector-defined ratios.

Parameters

image	Input image.
roiRatios	A vector of 4 float values (left, right, top, bottom) representing the ROI. Each value should be between 0 and 1.

Returns

A cv::Rect defining the cropped region.

computeRoi() [4/4]

cv::Rect RTABMAP_CORE_EXPORT rtabmap::util2d::computeRoi	(	const cv::Size &	imageSize,
		const std::vector< float > &	roiRatios
	)

Computes a region of interest (ROI) using float ratios and the image size.

Parameters

imageSize	The size of the image (width x height).
roiRatios	A vector of 4 float values representing ratios for cropping: [left, right, top, bottom]. Each must be in the range [0, 1), and valid (i.e., left + right < 1, top + bottom < 1).

Returns

The computed ROI rectangle.