The apparatus has an optical pickup unit (100) adapted to form an image in a focal plane (PF). A parallel main detector detects unidirectional-type lines (L) of photosensitive elements juxtaposed in a direction line (DL). The lines are offset in a column d...

The device has a matrix display (10) or microdisplay for sequential display of color images, and control electronics (11), where the color images are provided at a specific display frequency. A generation unit is arranged for generation of color images tha...

The method (10) involves identifying (12), in two-dimensional images acquired by a vision sensor, characteristic elements of images representing characteristic elements of an environment. A condensed measurement is calculated (14) based on characteristic e...