Cirrus Logic CS485 Dokumentacja Pobierz pdf (Strona 74)

100

101

Intel

Image Processing Library Reference Manual

4-20

Setting Regions of Interest

To set a region of interest, the function iplSetROI() uses a ROI structure

IplROI presented below. The IplROI member of the image header must

point to this

IplROI structure to be effective. This can be done by a simple

assignment. The application may choose to construct the ROI structure

explicitly without the use of the function.

IplROI Structure Definition

typedef struct _IplROI {

unsigned int coi;

int xOffset;

int yOffset;

int width;

int height;

} IplROI;

The members in the IplROI structure define:

coi

The channel of interest number. This parameter

indicates which channel in the original image will

be affected by processing taking place in the

region of interest;

coi

equal to 0 indicates that all

channels will be affected.

xOffset

and

yOffset

The offset from the origin of the rectangular ROI.

(See section “Image Regions” in Chapter 2 for

the description of image regions.)

width

and

height

The size of the rectangular ROI.

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 318 319

Komentarze do niniejszej Instrukcji

Brak uwag

Cirrus Logic CS485 Dokumentacja Strona 74

Komentarze do niniejszej Instrukcji