Abstract: An illumination apparatus emits illumination light S1 with an intensity distribution that changes with time. A photodetector measures reflected light from an object. A reconstruction processing unit reconstructs an intermediate image Hi(x, y) of the object for every predetermined number of changes of the intensity distribution using a correlation calculation between detection intensities based on the output of the photodetector and the intensity distributions of the illumination light. A combining processing unit calculates shift amounts ?x and ?y for matching between the current reconstructed image Gi(x, y) obtained by combining the previous intermediate images H(x, y) and the current intermediate image Hi(x, y). Subsequently, the current reconstructed image Gi(x, y) is shifted based on the shift amounts ?x and ?y. The shifted reconstructed image Gi(x??x, y??y) is combined with the latest intermediate image Hi(x, y) to create a new reconstructed image Gi+1(x, y).

Abstract: The illumination device has a plurality of light-emitting pixels which are individually on/off controllable, and emits a reference light having a random intensity distribution. The photodetector detects light reflected from an object. The processing device reconstructs an image of the object OBJ, by calculating a correlation between a detection intensity b based on an output of the photodetector, and the intensity distribution I of the reference light. The plurality of light-emitting pixels are divided into the m (m?2) areas each containing n (n?2) adjoining light-emitting pixels. By selecting one light-emitting pixel from each of the m areas without overlapping, the n light-emitting pixel groups are determined. The imaging apparatus carries out sensing for every light-emitting pixel group.

Abstract: In an imaging apparatus, a distance measurement sensor detects the distance to a target TGT. An illumination apparatus sequentially irradiates reference light S1 having a spatially random intensity distribution. A photodetector measures reflected light S2 from an object OBJ. A calculation processing device applies a time window that corresponds to an output of the distance measurement sensor to an output of the photodetector, and calculates a correlation between the detection intensity based on the signal included in the time window and the intensity distribution of the reference light so as to reconstruct a reconstructed image of the target.

Abstract: Patterning device modulates a light beam intensity distribution according to two-gradation first image data having a first number of pixels. Processing device calculates a correlation between detection intensity b based on output of photodetector and m-gradation (m?2) random second image data having a second number of pixels smaller than the first number, to generate a reconstructed image G(x,y) of an object. When the first and second image data are scaled to the same size and overlapped, each pixel is associated with a pixel group including multiple pixels of the overlapping first image data. With the normalized gradation value of a given pixel as k, the number of pixels included in the pixel group as L, and the number of pixels having a value of 1 in the pixel group as l, l=L×k holds true.

Abstract: An illumination apparatus irradiates first reference light having a first intensity distribution and second reference light having a second intensity distribution that has a complementary relation with the first intensity distribution. A photodetector measures reflected light from an object. A processing device executes a first correlation calculation using a first detection intensity based on the output of the photodetector in a state in which the first reference light is irradiated and the second intensity distribution, and executes a second correlation calculation using a second detection intensity based on the output of the photodetector in a state in which the second reference light is irradiated and the second intensity distribution.