A “blob”, in this context, is a shape identified within an image, which represents a single object.
The BlobModule interface and its related interfaces allow you to detect objects in front of the camera (i.e. blobs) and extract the segmentation images, contour lines, and points of interest for these blobs.
A segmentation image is an image representing a single blob, in which the blob’s pixels are white (255) and the background pixels are black (0). Contour lines are the outer and inner border lines that separate the object from its background. Figure 57 and Figure 58 show an example of a segmentation image and its contour lines. The white area is the blob representing an object, the black areas are the background, and the red lines are contour lines.