Abstract:
An image projection system includes projection means for projecting an image on a transmission type screen from a rear surface side of the screen, standard image information generating means for generating standard image information of a standard image, image capturing means for capturing an image on the rear surface of the screen from an inside of a casing in which the projection means is housed, the image capturing means capturing the standard image projected onto the screen from the projection means, which receives the standard image information from the standard image information generating means, removing means for removing influences of external light from the standard image projected from the projection means onto the screen, correction value computing means for computing a correction value on the basis of image information of the standard image from which the influences of the external light are removed by the removing means, correction value storage means for storing the correction value information obtained by the correction value computing means, and correction means for correcting image information from a picture signal source by using the correction value information stored in the correction value storage means, and supplying the corrected image information to the projection means.
Abstract:
The present invention provides a multi-display device that has a plurality of projectors and constructs one image as a whole. Partial images projected on a screen from the projectors overlap to have the edges thereof superposed on edges of adjoining partial images in shared fields on the screen. A sheet interceptor intercepts part of light to be projected on a shared field so that the luminance level in the shared field will agree with the luminance levels in the other fields except the shared fields. An interceptor portion of the sheet interceptor, which intercepts light from the right-hand side of a range on the screen within which a partial image is projected, can be displaced horizontally relative to an interceptor portion thereof that intercepts light from the left-hand side thereof. Likewise, an interceptor portion of the sheet interceptor that intercepts light from the upper side of the projected range can be displaced vertically relative to an interceptor portion thereof that intercepts light from the lower side thereof.
Abstract:
In a system according to the invention, fine image data 2 created and output by a personal computer 1 is input to an image processing/dividing section 4. The image processing/dividing section 4 determines, on the basis of parameters stored in a projector arrangement storage 5, which portion of the fine image data 2 is output to which projector, thereby performing a predetermined processing. Digital signals from the image processing/dividing section 4 are input to a plurality of D/A converters 6, respectively, where the signals are converted to analog signals. Images in the form of the analog signals are projected onto a screen 8 from projectors 7a-7d. Thus, the image projected on the screen 8 is constituted of accurately positioned images, and hence is a very fine image.
Abstract:
In an image processing apparatus of the present invention, which displays image data, such as images photographed by imaging apparatus such as a digital camera and photographing conditions as images before correction and images after correction, on an image display section, distortion and color tone of images obtained from an unused camera are corrected and joined to each other as viewing images before and after correction, so that the parameters used in the correction are stored in accordance with its apparatus, and the stored parameters are read out and used to correct in images obtained from previously used camera, and the joined image and image data are displayed on a monitor and output by a printer, or stored in a recording medium.
Abstract:
A digital evidential camera system is for detecting the alteration of image data obtained by photographing an object. The system comprises the camera and an alteration detection unit. The camera includes an image pickup unit for picking up an image of the object and an encryption processing unit for generating the alteration detection data using an encryption key built therein from the image data obtained by the image pickup unit. The alteration detection unit decrypts the alteration detection data using a decryption key corresponding to the encryption key, and detects whether the image data is altered based on the result of decryption.
Abstract:
In a system according to the invention, fine image data 2 created and output by a personal computer 1 is input to an image processing/dividing section 4. The image processing/dividing section 4 determines, on the basis of parameters stored in a projector arrangement storage 5, which portion of the fine image data 2 is output to which projector, thereby performing a predetermined processing. Digital signals from the image processing/dividing section 4 are input to a plurality of D/A converters 6, respectively, where the signals are converted to analog signals. Images in the form of the analog signals are projected onto a screen 8 from projectors 7a-7d. Thus, the image projected on the screen 8 is constituted of accurately positioned images, and hence is a very fine image.
Abstract:
In an image calibration device 10, a calibration pattern is projected onto a screen 4 from each projector 3 under control of a personal computer or other calibration device 10a, pictures are taken by a digital camera or other image pick-up device 11, and the results are supplied to the calibration device 10a. The calibration device 10a uses the supplied picture data to calculate parameters in order to perform picture positioning, color adjustment, brightness adjustment and other adjustments and corrections, and based on the calculation results transforms the original picture data, generates and supplies signals indicating projection conditions to each of the projectors 3, and performs image calibration control of the pictures projected by each projector 3. Here at the time of taking pictures, by installing on the image pick-up device 11 a shielding member 12 formed into a tetragonal pyramid shape, the light-receiving part of the image pick-up device 11 and the screen are completely shielded from ambient external light. By this means, the measurement precision of the image pick-up device 11 is improved, and accurate and reliable image calibration is performed.
Abstract:
An image pick-up apparatus includes an optical system which forms a subject image. An image pick-up unit obtains image data from the subject image formed by the optical system. A vibration detecting unit detects a vibration of the image pick-up apparatus. In an image deterioration information storage unit, information of image deterioration generated by the optical system is stored. An image deterioration correcting unit corrects the image deterioration generated by the optical system with respect to the image data output from the image pick-up unit in accordance with the image deterioration information stored in the image deterioration information storage unit. A vibration restoring unit restores the image deteriorated by the vibration with respect to the image data output from the image deterioration correcting unit in accordance with the vibration detecting signal of the time series.
Abstract:
An imaging apparatus of the invention comprises a camera body and a lens unit which can be mounted on and removed from the camera body. The focusing lens of the lens unit is moved along the optical axis. The position of the focusing lens on the optical axis is detected by a position detection section in response to a synchronization signal according to the photographic timing of the imaging device. A second transmission section transmits position data on the focusing lens detected by the position detection section to the camera body.
Abstract:
An image synthesizing apparatus is disclosed which incorporates a deviation detection portion for calculating a parameter indicating the positional relationship between images obtained by photographing a subject such that the subject is divided into sections, an interpolating portion for correcting parallel translation and rotation from the parameter and the images, an exposure processing portion which calculates an exposure correction coefficient from overlap portions of the images corrected by the interpolating portion so as to correct the exposure of the images which must be connected to each other, and an image synthesizing portion for connecting and synthesizing the corrected images to one another, wherein the exposure of each image is corrected before the divided and photographed images are connected to one another so that the overall image is corrected to have natural exposure.