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    • 8. 发明公开
    • DEVICE AND METHOD FOR AUTOMATED OUTPUT OF AN IMAGE MOTION AREA
    • EP4401418A1
    • 2024-07-17
    • EP23150997.7
    • 2023-01-10
    • E-PEAS
    • HAINE, ThomasHENNETON, LoïcGOSSET, Geoffroy
    • H04N25/443H04N25/46
    • H04N25/443H04N25/46
    • The present invention concerns an integrated circuit of an image capture device for automatically optimizing a ratio (A1 / A0) of an output image area (A1) to a main window area (A0) and optimizing, preferably maximizing a product D1 × A1 of an output pixel density (D1) multiplied by the output image area (A1) of a motion detection area defining an output image (P1) composed of a predefined maximum number of pixels (N1m). The integrated circuit comprises an array of photosensors for capturing an input image (P0), and a processing unit configured for carrying out the following actions,
      • in an image detection mode, a sequence of successive reference images (Prefj) are captured at different times with a subarray of Nr reference photosensors, and a number (Nm) of motion pixels (pm) are determined whose value differences between two reference images exceed a predefined threshold variation for detecting a movement in a region of the reference images, and switching to
      • in an image capture mode, wherein the parameters of an output image to be captured are defined as follows:
      ∘ an output window (W1) of an output window area (A1) which encloses at least a predefined number (Nmt) of motion pixels (pm), and
      ∘ an output pixel density D1 = N1 / A1 ≤ D0, with N1 ≤ N1 m
      ∘ capture the output image (P1) defined by the output window (W1) having the output window area (A1) and output pixel density (D1),

      • transferring the output image (P1) comprising N1 pixels out of the integrated circuit.