Abstract:
The present invention provides an imaging apparatus which generates, based on a captured image, a depth map of an object with a high degree of precision. A sensor drive unit (12) that shifts an image sensor (11) in an optical axis direction, along with a sensor drive control unit (13), capture images A and C which are focused on a near end side and a far end side of the object, respectively, and an image B by sweeping the image sensor (11) from the near end side to the far end side, an all-in-focus image generation unit (15) generates an all-in-focus image D from the sweep image B, a blur amount calculation unit (16) calculates an amount of blur in each of the partial regions of the images A and B through deconvolution processing in an image of a region corresponding to the all-in-focus image D, and a depth map generation unit (17) generates a distance between the imaging apparatus and the object in each of the image regions, in other words, a depth map, from an amount of blur in regions corresponding to the near end image A and the far end image C and from an optical coefficient value of the imaging apparatus including a focal length of a lens.
Abstract:
An image pickup device disclosed by this application includes an image pickup element; a lens optical system including a focus lens; a driving section for driving one of the image pickup element and the focus lens so as to change a distance between the image pickup element and the focus lens; a displacement control section configured to output an instruction to the driving section to control displacement of the image pickup element or the focus lens which is driven, based on a prescribed displacement pattern; and a synchronization section configured to control the displacement control section based on timing for exposing the image pickup element. Where first and second focus positions of the focus lens or the image pickup element provide focusing at first and second subject distances respectively in an image pickup scene, the displacement pattern includes a first type of displacement pattern by which the focus lens or the image pickup element is displaced in a displacement range between the first focus position and the second focus position, and a second type of displacement pattern by which the focus lens or the image pickup element is displaced in another displacement range between the first focus position and the second focus position; the first type of displacement pattern and the second type of displacement pattern being alternately repeated.
Abstract:
An image restoration device (110) according to the present invention includes: a point spread function (PSF) storage unit (111) which stores any two PSFs among a first range PSF (121) for restoring a first sweep image serving as a sweep image (131) when a sweep range (133) is a first range; a second range PSF (122) for restoring a second sweep image serving as the sweep image (131) when the sweep range (133) is a second range which excludes the first range; a third range PSF for restoring a third sweep image serving as the sweep image (131) when the sweep range (133) is a third range obtained by combining the first range and the second range; and a PSF calculation unit (112) which performs addition or subtraction on the two PSFs to calculate a remaining one among the first, second, and third range PSFs.
Abstract:
An imaging apparatus (10) includes: an imaging unit (11); a focal range control unit (12) configured to cause the imaging unit (11) to capture a first image (31a) and a second image (31b) which have mutually different focal ranges, changing a focal position of the imaging unit (11); a reference image generation unit (13) configured to generate, using the first image (31a) and the second image (31b), a reference image (32) to be used as a blur standard; and a distance measurement unit (14) configured to measure a distance to the subject based on a difference in blur degrees between the reference image (32) and each of the first image (31a) and the second image (31b). The focal ranges of the first image (31a) and the second image (31b) are independent of each other, and an out-of-focus space is provided between the focal ranges.
Abstract:
A three-dimensional image capturing apparatus (100) generates depth information to be used for generating a three-dimensional image from an input image, and includes: a capturing unit (130) obtaining the input image in capturing; an object designating unit (110) designating an object in the input image; a resolution setting unit (120) setting depth values, each representing a different depth position, so that in a direction parallel to a depth direction of the input image, depth resolution near the object is higher than depth resolution positioned apart from the object, the object being designated by the object designating unit (110); and a depth map generating unit (140) generating two-dimensional depth information corresponding to the input image by determining, for each of regions in the input image, a depth value, from among the depth values set by the resolution setting unit (120), indicating a depth position corresponding to one of the regions.