title: Optoelectronic morphological image processor.
abstract: 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 x 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 x 256 pixels and 16 gray levels with kernels of arbitrary size are presented.
authors.forename: J
authors.initials: J
authors.lastname: Garcia
authors.forename: T
authors.initials: T
authors.lastname: Szoplik
authors.forename: C
authors.initials: C
authors.lastname: Ferreira