One of the most fundamental features of digital image and the basic steps in image processing, analysis, pattern recognition and computer vision is the edge of an image where the preciseness and reliability of its results will affect directly on the comprehension machine system made objective world. Several edge detectors have been developed in the past decades, although no single edge detector...

A robust skin detector is the primary need of many fields of computer vision, including face detection, gesture recognition, and pornography filtering. Less than 10 years ago, the first paper on automatic pornography filtering was published. Since then, different researchers claim different color spaces to be the best choice for skin detection in pornography filtering. Unfortunately, no com...

A hybrid sensor and display pixel and its operating scheme are proposed. The circuit consists of two main parts: 1) the light sensor and 2) the integrated display onto the backplane. Hybrid a-Si:H/Nanocrystalline silicon (nc-Si) TFTs were used as a hybrid phototransistor incorporating both sensing and switching on the same device. The display backplane design was implemented using a driving TFT...

The first frame-transfer CMOS active pixel sensor (APS) is reported. The sensor architecture integrates an array of active pixels with an array of passive memory cells. Charge integration amplifier-based readout of the memory cells permits binning of pixels for variable resolution imaging. A 32 32 element prototype sensor with 24m pixel pitch was fabricated in 1.2m CMOS and demonstrated.