An exposure time is changed stepwise, a light receiving amount output from a light receiving section is obtained at each exposure time, which is changed stepwise, and height image data, in which each pixel value indicates a height of each portion of a surface of a measuring object, is generated based on the obtained light receiving amount. It is determined whether each pixel constituting each height image is valid or invalid based on the obtained light receiving amount. An exposure time, which corresponds to a height image in which the number of pixels determined to be valid satisfies a predetermined condition, is set as a set value.

An exposure time is changed stepwise, a light receiving amount output from a light receiving section is obtained at each exposure time, which is changed stepwise, and height image data, in which each pixel value indicates a height of each portion of a surface of a measuring object, is generated based on the obtained light receiving amount. It is determined whether each pixel constituting each height image is valid or invalid based on the obtained light receiving amount. An exposure time, which corresponds to a height image in which the number of pixels determined to be valid satisfies a predetermined condition, is set as a set value.

An image processing apparatus includes: an acquisition unit that acquires a plurality of first images that correspond to a plurality of spatial frequencies on a one-to-one basis; and a generation unit that generates a second image by synthesizing the first images acquired by the acquisition unit.

An image recognition device, an image recognition method and an image recognition unit are capable of performing touch recognition high in accuracy. The image recognition device includes a measurement point determination section adapted to determine a fingertip from an image obtained by a camera, a pattern display section adapted to make a projector display a first pattern having a first linear pattern varying in luminance with a first pitch along a direction parallel to an epipolar line passing through the fingertip, and a second linear pattern varying in luminance with a second pitch along a direction parallel to the epipolar line, and a position detection section adapted to perform touch recognition based on a variation of the first pattern from the image including the first pattern.

A control apparatus includes a projection unit configured to project a first pattern onto an object; and a selection unit configured to select a single first pattern from a plurality of first patterns. After the projection unit projects each of the plurality of first patterns having different resolutions onto the object, the projection unit projects a second pattern onto the object, the second pattern having the same resolution as that of the selected single first pattern.

Disclosed are a method and apparatus for acquiring a three-dimensional image using two cameras. The method includes: acquiring image information of a target object using a first camera, and sending the acquired image information to an image signal processor; acquiring a phase grating image subjected to strip deformation in a picture space with an identical visual angle using a second camera, calculating depth data of the target object, and sending the depth data to the image signal processor; upon receipt of the image information and the depth data, if the image signal processor judges that the depth data is received, directly sending the depth data to a 3D image generating module, and if the image signal processor judges that the image information is received, performing routine image signal processing and sending the image information to the 3D image generating module; and synthesizing the depth data and the image information subjected to the image signal processing using the 3D image generating module to generate a 3D image.

A three dimensional shape measurement apparatus comprising: a projection unit configured to perform a projection operation to a measurement area; a photographing unit configured to photograph a target object in the measurement area undergoing the projection operation; and a measurement unit configured to measure a three dimensional shape of the target object based on the photographed image, wherein the measurement area includes a measurement reference surface serving as a reference for a focus position of a photographing optical system of the photographing unit, and is defined based on a projection range of the projection unit and a photographing range of the photographing unit, and the focus position is set deeper than a position of the measurement reference surface when observed from the photographing unit.

A topography measurement system includes a radiation source; a first grating; imaging optics; a movement mechanism; detection optics; a second grating; and a detector. The radiation source is configured to generate a radiation beam and includes a light emitting diode to produce to the radiation. The first grating is configured to pattern the radiation beam. The imaging optics is configured to form a first image of the first grating at a target location on a substrate. The movement mechanism is operable to move the substrate relative to the image of the first grating such that the target location moves relative to the substrate. The detection optics is configured to receive radiation from the target location of the substrate and form an image of the first image at the second grating. The detector is configured to receive radiation transmitted through the second grating and produce an output signal.

A system for creating a near-spherical point cloud of RGBD data includes one or more sensing units for providing depth data, each sensing unit having a stereo pair of sensors fitted with the wide-angle lens from which a one-dimensional line of pixels is read, and one or more lasers for illuminating the single line of pixels, the sensing units mounted on a spinning platform. The spinning platform is mounted on the base having a plurality of cameras mounted therein for providing 360-degree RGB data.

A three-dimensional (3D) measurement system, method and computer program product are provided. The system includes a noncontact measurement device that measures a distance from the noncontact measurement device to a surface. The device includes a projector that emits a light pattern. A measurement camera is coupled to the noncontact measurement device. A first color camera is provided having a first quality parameter. A second color camera is coupled to the device, the second color camera having a second quality parameter, the second quality parameter being larger than the first quality parameter. One or more processors are operably coupled to the noncontact measurement device that determine 3D coordinates of at least one point in a field of view and selectively acquiring an image with the second color camera.