[Papers] CMOS Image Sensor with Pseudorandom Pixel Placement for Image Measurement using Hough Transform

Abstract

The pixels in the conventional image sensors are placed at lattice positions, and this causes the jaggies at the edge of the slant line we perceive, which is hard to resolve by pixel size reduction.

The authors have been proposing the method of reducing the jaggies effect by arranging the photo diode at pseudorandom positions, with keeping the lattice arrangement of pixel boundaries that are compatible with the conventional image sensor architecture. In this paper, the authors discuss the design of CMOS image sensor with pseudorandom pixel placement, as well as the the evaluation on image measurement accuracy of line parameters using Hough transform.