Block-wise lensless compressive camera

The existing lensless compressive camera (L
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C
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) [1] suffers from low capture rates, resulting in low resolution images when acquired over a short time. In this work, we propose a new regime to mitigate these drawbacks. We replace the global-based compressive sensing used in the existing L
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C
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by the local block (patch) based compressive sensing. We use a single sensor for each block, rather than for the entire image, thus forming a multiple but spatially parallel sensor L
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C
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. This new camera retains the advantages of existing L
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C
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while leading to the additional benefits of fast acquisition, real time reconstruction, and the flexibility to image size. We develop multiple geometries of this block-wise L
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C
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in this paper. We have built prototypes of the proposed blockwise L
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C
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and demonstrated excellent results of real data.