Smart pixel array for optical processing of cervical smears

We will describe the performance of our diagnostic cytology smart pixel array test chip as well as further issues confronting the output of a hit/miss transform (HMT) optical correlator. Particularly important is the light sensitivity of the smart pixel array at 807 nm and this has implications in the design of the chip. Low light intensity operation of the chip´s detector portion of the pixel will be examined in relation to reduced intensity from optical losses in the correlator. The various pixel logic implementations for this chip will be reviewed as well as the design tradeoffs associated with their use in optical-to-electronic VLSI circuits. Readout schemes which reduce the data into a more useful form will be reviewed and their performances analyzed, including region of interest position detection for faster diagnosis.