A morphological optoelectronic image processor based on the threshold decomposition concept is described and demonstrated. Binary slices of a gray-scale input image are optically convolved with a binary structuring element of arbitrary size and shape in a noncoherent convolver. The slices are displayed on a liquid-crystal spatial light modulator of 320 × 264 pixels. The kernels are implemented as modifications of the system impulse response. The processor’s convolution patterns are recorded with a CCD camera and fed into a PC by a frame grabber. Subsequent elementary morphological operations are looped. Examples of processing an input image of 256 × 256 pixels and 16 gray levels with kernels of arbitrary size are presented.
© 1993 Optical Society of America
Original Manuscript: June 14, 1993
Published: November 15, 1993
Javier Garcia, Tomasz Szoplik, and Carlos Ferreira, "Optoelectronic morphological image processor," Opt. Lett. 18, 1952-1953 (1993)