4.3 blobfinder

Synopsis

The blobfinder proxy provides an interface to color blob detectors such as the ACTS vision system. See the Player User Manual for a complete description of the drivers that support this interface.

Data

struct playerc_blobfinder_blob_t : Description of a single blob.

int channel;

The blob "channel"; i.e. the color class this blob belongs to.

uint32_t color;

A descriptive color for the blob. Stored as packed RGB 32, i.e.: 0x00RRGGBB.

int x, y;

Blob centroid (image coordinates).

int area;

Blob area (pixels).

int left, top, right, bottom;

Bounding box for blob (image coordinates).

struct playerc_blobfinder_t : Blobfinder device data.

playerc_device_t info;

Device info; must be at the start of all device structures.

int width, height;

Image dimensions (pixels).

int blob_count;
playerc_blobfinder_blob_t blobs[PLAYERC_BLOBFINDER_MAX_BLOBS];

A list of detected blobs.

Functions

playerc_blobfinder_t *playerc_blobfinder_create(playerc_client_t *client, int index);

Create a blobfinder proxy.

void playerc_blobfinder_destroy(playerc_blobfinder_t *device);

Destroy a blobfinder proxy.

int playerc_blobfinder_subscribe(playerc_blobfinder_t *device, int access);

Subscribe to the blobfinder device.

int playerc_blobfinder_unsubscribe(playerc_blobfinder_t *device);

Un-subscribe from the blobfinder device.