HoughSearch

Hough conversion search

int HoughSearch(
        const IMAGE             *image,
        const FIG_HEADER        *figure,
        const int               subPixcel,
        const int               startAngle,
        const int               endAngle,
        const double    standardX,
        const double    standardY,
        const BYTE              *model,
        double          *positionX,
        double          *positionY,
        double          *angle,
        double          *correlation
)

Parameters

*image	Image data structure address
*figure	Figure data structure address
subPixcel	Sub-pixel 0: OFF 1: ON
startAngle	Rotation start angle (-180 to 180: default is 0)
endAngle	Rotation end angle (-180 to 180: default is 0)
standardX	Reference coordinate X
standardY	Reference coordinate Y
*model	Model data
*positionX	Search coordinate X (measurement result)
*positionY	Search coordinate Y (measurement result)
*angle	Search angle
*correlation	Correlation

Return Value

NORMAL(0): Successful completion

ERROR(-1): Unsuccessful completion

Description

To perform a search, perform the "search image creation for Hough conversion search" and then the "Hough conversion search" to calculate the candidate points.

Next, perform the "normalization CR search" for each candidate point, and output the position having the highest correlation value as the search position.

The search range is specified by a FIGURE structure, which must represent a rectangle figure.

Notes