<p>Novel CMOS area sensors capable of acquiring projection data for Compressed Sensing (CS) are proposed. We particularly focus on a special class of CMOS area sensors, so-called Profile Sensor (PS). The pixels of the PS are arranged in a two-dimensional array, and unlike ordinary image sensors, the pixels are connected by wires both in the row- and column directions so that the photocurrents are added together row by row and column by column. Thus, the projection data can be acquired along the row and column at once. The proposed sensors can perform row- and column-based CS by using either AND gates or XOR and XNOR gates per pixel. It is numerically shown that the proposed sensor with AND gates exhibits better performance than conventional column-based CS CMOS image sensors and block-based CS CMOS image sensors in reconstructing low resolution images, and the proposed sensor with XOR and XNOR gates exhibits better performance than those conventional sensors in reconstructing low resolution images with low compression ratio. In particular, the proposed sensor with XOR and XNOR gates can potentially operate at twice the frame rate of the conventional sensors.</p>

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Profile Sensors Capable of Acquiring Projection Data for Compressed Sensing

  • Keisuke Uchida,
  • Munenori Takumi,
  • Katsuhiro Ishii,
  • Ken-Ichi Kitayama

摘要

Novel CMOS area sensors capable of acquiring projection data for Compressed Sensing (CS) are proposed. We particularly focus on a special class of CMOS area sensors, so-called Profile Sensor (PS). The pixels of the PS are arranged in a two-dimensional array, and unlike ordinary image sensors, the pixels are connected by wires both in the row- and column directions so that the photocurrents are added together row by row and column by column. Thus, the projection data can be acquired along the row and column at once. The proposed sensors can perform row- and column-based CS by using either AND gates or XOR and XNOR gates per pixel. It is numerically shown that the proposed sensor with AND gates exhibits better performance than conventional column-based CS CMOS image sensors and block-based CS CMOS image sensors in reconstructing low resolution images, and the proposed sensor with XOR and XNOR gates exhibits better performance than those conventional sensors in reconstructing low resolution images with low compression ratio. In particular, the proposed sensor with XOR and XNOR gates can potentially operate at twice the frame rate of the conventional sensors.