SOD C/C++ API Reference - Image Processing


Syntax

void sod_image_draw_box_grayscale(sod_img input, int x1, int y1, int x2, int y2, float g);

Description

Draw a single box (i.e. rectangle) on an input grayscale image. As of this release, we recommend using sod_image_draw_bbox() instead. This function is very useful when working with the object detection interfaces for example to mark a detected object (i.e. car, plane, person, etc.) coordinates. When done, you can save the output on disk using sod_img_save_as_png() for instance.

Parameters

sod_img    input

The input image to be processed. The image can be loaded from disk using sod_img_load_from_file(), from memory (i.e. network socket) via sod_img_load_from_mem() or dynamically created via sod_make_image().

int    x1

The x-coordinate, in logical units of the rectangle starting position.

int    y1

The y-coordinate, in logical units of the rectangle starting position.

int    x2

The x-coordinate, in logical units of the rectangle ending position. So x2 - x1 should give you the width of this rectangle.

int    y2

The y-coordinate, in logical units of the rectangle ending position. So y2 - y1 should give you the height of this rectangle.

float    g

Gray color value in a typical grayscale colorspace.

Return Value

None.

Example

Checkout the introduction course, the C/C++ samples on the download page or refer to the SOD Github Repository.

See also

sod_canny_edge_imagesod_image_draw_bboxsod_image_find_blobssod_hough_lines_detectsod_grayscale_imagesod_crop_image.



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