摘要:
A 3-dimensional image acquisition apparatus acquires images to be used for 3-dimensionally reconstructing an object by picking up the object by a camera twice or more in an image acquisition set including picking up at least once the object carrying a pattern projected onto it by a projection light source. The apparatus comprises a light projection information memory configured to store information on projection of light including information on the time for projecting light for the purpose of projecting the pattern in the image acquisition set, an image acquisition progress information memory configured to store information on the progress of image acquisition in the image acquisition set, and a controller configured to control the projection of light by the projection light source and the picking up by the camera on the basis of the stored information on projection of light and the stored information on the progress.
摘要:
An image pickup apparatus is capable of performing an image pickup with pattern projection on an object to obtain three-dimensional information on the object, and an image pickup without pattern projection. The image pickup apparatus comprises an exposure level determination section configured to determine a predetermined exposure level needed by an image pickup device of the image pickup apparatus, and a shutter speed determination section configured to determine a first shutter speed to achieve the predetermined exposure level determined by the exposure level determination section in the image pickup without pattern projection, and a second shutter speed not slower than the first shutter speed. The image pickup with pattern projection is conducted by use of the second shutter speed.
摘要:
A calibration pattern unit which obtains correction information of an imaging system by imaging at the imaging system comprises a calibration pattern which has a known geometric pattern formed on a plurality of three-dimensionally arranged planes, and a relative position and posture fixing section which fixes relative position and posture between the calibration pattern and the imaging system.
摘要:
A finder apparatus which is used together with a photographing apparatus presents a marker for positioning for setting relative positions of the photographing apparatus and an object for calibration so as to be visually recognizable by an operator in a finder configured to present an image of a subject so as to be visually recognizable by the operator, when photographing the object for calibration including at least one of a known shape and a known surface attribute in order to acquire parameters of a photographing optical system of the photographing apparatus.
摘要:
A calibration pattern unit which obtains correction information of an imaging system by imaging at the imaging system is formed by combining a plurality of three-dimensionally arranged planes. The calibration pattern unit comprises supporting members each of which has a predetermined surface corresponding to one of the planes, and a calibration pattern in which a predetermined pattern is formed on the predetermined surface of the supporting member. The supporting member can selectively set the calibration pattern unit to a first form for photographing when the correction information is obtained, and a second form for other purposes.
摘要:
A calibration apparatus which estimates a calibration parameter of an image acquisition apparatus, comprises a calibration jig which includes at least two planes and in which calibration markers having known three-dimensional positions are arranged in each plane based on a predetermined rule. The calibration apparatus further comprises a calibration marker recognition section configured to measure and number in-image positions of the calibration markers in at least one image obtained by photographing the calibration jig by the image acquisition apparatus, and a parameter estimate section configured to estimate the calibration parameters of the image acquisition apparatus by the use of the three-dimensional position and the in-image position of the calibration markers numbered by the calibration marker recognition section.
摘要:
A three-dimensional photographing apparatus includes a photographing unit configured to photograph an object from a plurality of viewpoints and a projecting unit configured to project a pattern on the object in photographing. The projecting unit including an optical system having a projection view angle. The projection view angle of the optical system falls within a range where the photographing unit photographs the object and is set so as to project the pattern on an overlapped area which is formed by overlapping photographing spaces capable of photographing the object from the viewpoints.
摘要:
A three-dimensional image photographing apparatus acquires an image that includes shape information and texture information of an object, and acquires a three-dimensional image of the object by utilizing the image that includes the shape information and the texture information. A three-dimensional measuring device measures the three-dimensional shape of the object. An illumination device is disposed fixed at a predetermined position relative to the object and comprises an illumination light source and an optical system to illuminate the object. A texture image photographing device photographs a texture image of the object illuminated by the illumination device from a plurality of viewpoints.
摘要:
A see-through image display system having an Exit-Pupil-Expander (EPE) to enlarge the eyebox of display is disclosed. The EPE uses a hologram functioning as a micro-lens-array as well as collimation lens.
摘要:
A method for producing adenine compound (1): wherein m and n are independently an integer of 2 to 5, R1 is C1-6 alkyl group, R2 and R3 are the same or different, and hydrogen atom, or C1-6 alkyl group, or R2 and R3 are combined with an adjacent nitrogen atom to form pyrrolidine, morpholine, piperidine, piperazine, etc., and R4 is C1-3 alkyl group, which comprises a step of reacting compound (2): and compound (3): in the presence of a boron-containing reducing agent.