|
Usually, obtaining a foveated image is carried by super-imposing of at least two images, a low-resolution wide field of view with a high-resolution narrow field of view. This is normally done by combing two or more light sources or combing two display panels optically. In the presented work, a single light source is being used to project a foveated image. The system is based on a MEMS scanning mirror with a dedicated controller. Precise motion control of the mirror along with the presented method allows manipulating the location of each pixel. A pixel location is a timed light pulse synchronized with the mirror orientation. The algorithm times the pixels achieving a dense area of pixels around the desired fixation point and sparse area of pixels elsewhere. The pixels locations may vary for each frame. Moreover, compensation to the different light intensities within the frame is applied. The presented algorithm allows projecting a foveated image by a laser scanning without the tangle of sophisticated hardware. |
ACCESS THE FULL ARTICLE
No SPIE Account? Create one
Microelectromechanical systems
Image resolution
Projection systems
Light sources
Raster graphics
Image segmentation
Laser based displays
