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In this paper, a block-based online compressive sampling scheme for digital pixel sensor (DPS) is proposed. The overall sensor array is divided into blocks whereby one randomly selected pixel within each block is sampled using a random access control circuit. The latter is performed using off-array horizontal and vertical control logic. The random access addresses are updated during readout phase...
In this paper, we propose a compact block-based compressive acquisition CMOS image sensors. The overall image is decomposed into blocks. The proposed design reorders the raw captured pixel values within each block, only recording the brightest pixel value and the darkest pixel value for each block using full precision (typically 8-bit). During reconstruction, block models are built to model the value...
In this paper, the architecture of a digital pixel sensor (DPS) array with an online 1-bit predictive coding algorithm using Hilbert scanning scheme is proposed. The architecture of the sensor array reduces by more than half the silicon area of the DPS by sampling and storing the differential values between the pixel and its prediction, featuring compressed dynamic range and hence requiring limited...
In this paper, the concept of compressive acquisitive image sensor is extended to the temporal domain. Architecture of a compact CMOS image sensor designed based on the design paradigm capture??compress??store is proposed. The image sensor array is divided into quadrants. Spatial compression algorithm is integrated into quadrant-level circuit and carried out on-line before the storage phase. All the...
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