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A digital still camera image processing system on a chip,different from the video camera system,is presented for mobile phone to reduce the power consumption and size.A new color interpolation algorithm is proposed to enhance the image quality.The system can also process fixed patten noise(FPN) reduction, color correction,gamma correction,RGB/YUV space transfer,etc.The chip is controlled by sensor registers by inter-integrated circuit(I~2C) interface.The voltage for both the front-end analog and the pad circuits is 2.8 V,and the volatge for the image signal processing is 1.8 V.The chip running under the external 13.5-MHz clock has a video data rate of 30 frames/s and the measured power dissipation is about 75 mW.
A digital still camera image processing system on a chip, different from the video camera system, is presented for mobile phone to reduce the power consumption and size. A new color interpolation algorithm is proposed to enhance the image quality. System can also process fixed patten noise (FPN) reduction, color correction, gamma correction, RGB / YUV space transfer, etc. The chip is controlled by sensor registers by inter-integrated circuit the pad circuit is 2.8 V, and the volatge for the image signal processing is 1.8 V. The chip running under the external 13.5-MHz clock has a video data rate of 30 frames / s and the measured power dissipation is about 75 mW.