Color Pattern Recognition with Recombined Single Input Channel Joint Transform Correlator

Abstract

Joint transform correlator (JTC) is a well known tool for color pattern recognition for a color image. Color images have red, green and blue components, thus in conventional JTC, three input channels of these color components are necessary for color pattern recognition. This paper proposes a new technique of color pattern recognition by decomposing the color image into three color components and recombining those components into a single gray image in the input plane. This new technique needs single input channel and single output CCD camera, thus a simple JTC can be used. We present various kinds of simulated results to show that our newly proposed technique can accurately recognize and discriminate color differences.

Coded Single Input Channel for Color Pattern Recognition in Joint Transform Correlator

“…We proposed previously a technique of color pattern recognition by decomposing the color image into three color components and adding those components into a single gray image in the input plane [23]. This new technique requires a single input channel instead of three input channels However, this technique has some problems with discrimination impossibility in the case of simple color patterns such as red, green, and blue which result in the same gray level through the addition process.…”