An image mosaic algorithm based on disparity gradient

Objective To study the effects of discontinuous-continuous disparity gradient, uncrossed-crossed disparity and small-large disparity in random-dot stereogram (RDS) on the event-related potentials (ERPs).

An algorithm that combining with the parameter of matched region to construct disparity gradient function is presented,which cast away the instability of existing algorithms that judge by single parameter.

Based on color image characteristic,chromatic gradient is presented.

Then,by adding chromatic gradient constrain,disparity image is done by a color image which is transformed into improved rank image.

Realization of 10bit, 200MHz sampling frequency CMOS video D/A converter with gradient error compensation;

Realization of 8bit, 80MHz sample/s thermometer-decoded DAC with gradient error compensation;

Switching schemes for gradient error compensation in unary (thermometer-decoded) arrays of digital-to-analog converters (DAC s) are discussed.

In order to overcome the drawback of SPRLS algorithm that have slow convergence rate when error is small, we use the information of error grads to modify the self-perturbing term and present a new modified SPRLS algorithm which is applicable to smart antenna.