Abstract: Provided is an apparatus and method for describing three-dimensional, image data, an apparatus and method for retrieving three-dimensional image data, and a computer-readable recording media for recording the programs. An object of the present invention is to provide an apparatus and method for describing three-dimensional image data, and a computer-readable recording-medium that implements the method. Another object of the present invention is to provide an apparatus and method for retrieving three-dimensional image data suitable for various application areas and display apparatuses, and a computer-readable recording-medium that implements the method.

Abstract: To provide an image processing apparatus and an image transmission apparatus capable of image display as excellent as a normal raster image even when the memory capacity is reduced in a display having a built-in memory, and an image processing method. The image processing apparatus of the present invention performs multi-valued dither processing at an image processing former stage 4 when a raster image 1 is input to a memory 2, and the raster image output from the memory 2 is subjected to reverse processing to the multi-valued dither processing in an image processing latter stage 5. With this construction, it is possible to obtain a display apparatus capable of suppressing a grainy feeling and pseudo colors, thereby realizing high quality images.

Abstract: An image reading apparatus which reads a fingerprint image, includes a roller rotatably mounted to the image reading apparatus, a given pattern being printed on part of an outer surface of the roller in a circumferential direction, a line sensor including a plurality of image pickup elements which read a fingerprint image from a finger that touches with the roller as well as the pattern printed on the roller, a generating unit which generates a reference value to each of the image pickup elements corresponding to part of the line sensor, which reads the pattern, based on image data of the pattern, a rotation sensing image extracting unit which extracts a rotation sensing image based on the reference value, and a determination unit which determines capture timing of the fingerprint image based on variations in the rotation sensing image.

Abstract: An image processing terminal apparatus includes an image capture device configured to optically scan an intended area on a document by moving the terminal apparatus over the document and to capture image data of each of serial static images of the intended area for position calculation and image data of each of serial static images of the intended area for character recognition, alternately, and an image process device configured to calculate position information of the each of serial static images of the intended area for character recognition based on image data of predetermined areas in the each of serial static images of the intended area for position calculation.

Abstract: A method for optical shape recording and/or evaluation of optically smooth, glossy or optically rough surfaces wherein a photometric stereo method and a deflectometric method are combined using a scattering body so that the positions on the scattering body surface are two-dimensionally encoded.

Abstract: The process of the invention enables the spatial color alterations of a silver image to be taken into account according to one of its main axes (19). The process of the invention enables the altered or faded colors of the silver image to be restored automatically, without depending on the skills of an operator to perform a color restoration treatment. A digital image (12) is divided into adjacent pixel strips (18), arranged perpendicular to the direction (19) according to which the color alteration occurs. For each of these strips (18), optical density distributions of each pixel are calculated and compared with reference optical density values. The process of the invention enables the automatic correction of all the strips (18) comprising the altered pixels, by applying a linear transformation enabling the transformation of the optical density values of the altered pixels, into the optical density values of a pixel strip of least degradation.

Abstract: A system for image enhancement and, more particularly, a system for enhancing the quality of a quantized image.

Abstract: There is described a photogrammetric method and an arrangement for the three-dimensional digitizing of bodies and body parts (26) which are covered with a marked, elastic cover (14), which comprises high-contrast marks which are photogrammetrically analysable, and which are photographed from different shooting positions. For the purpose, at least one camera (22) is moved around the body with a simple, inaccurate guide and images overlapping each other are taken from different positions in space to cover both the body and several of the marks (10) of the support (12). Methods of photogrammetry as well as digital image processing and pattern recognition provide precise space coordinates of the body to be digitized. One exemplary application is the digitizing of the foot/lower leg portion for the selection or custom manufacture of anatomically well-fitting footwear, the digitizing of the leg portion for the manufacture or selection of well-fitting compression stockings.

Abstract: An existing electronic part mounting device can have the function of correcting the parallax of a camera pickup image only by addition or modification of software without using a telecentric lens. For this, storage means stores in advance parallax data representing the relationship between the height of an electronic part to be picked up by a camera and a part size per pixel for each pixel of the pickup image or image magnification. When picking up the electronic part adsorbed by an adsorption nozzle (11) by the camera, the part height data on the height of the electronic part is acquired, so that according to the part height data and the aforementioned parallax data, a part size per pixel or image magnification is corrected for each pixel of the pickup image of the electronic part, thereby correcting the parallax of the pickup image of the electronic part.

Abstract: To provide a contour extraction apparatus which can perform much more quickly the contour division when required while reducing the cost for computing.

Abstract: Method and apparatus for reducing memory access while de/compressing multimedia files, videos, or image files. An image is divided into blocks, and a frequency data matrix corresponding to a frequency transformed and quantized block is stored in a memory for later de/compression. The method includes registering a bit plane containing a plurality of bits in a register module, wherein each bit represents whether a corresponding element of the data matrix equals zero. While accessing the memory for the data matrix, if a bit of the bit plane shows that its corresponding element of the data array is zero, the element is not accessed from the memory. In checking bits corresponding to elements not yet accessed; if these bits show that elements not accessed are all zero, accessing for the data array can be terminated without accessing them. Thus, memory access can be reduced to occupy less bandwidth of the memory.

Abstract: The invention is directed to a method and apparatus for transforming the dimensions of an image represented by block-interleaved data. The method comprises: (a) storing a first minimum coded unit of the image data in a first memory; (b) dimensionally transforming the first minimum coded unit; and (c) storing a second minimum coded unit of the image data in the first memory. Steps (b) and (c) are performed after step (a). In addition, step (b) is performed before: starting to store any third minimum coded unit in the memory after step (c). The apparatus comprises a first memory, a storing circuit, a dimensional transforming circuit, and a timing control circuit. Preferably, the first memory is sized for storing no more than two minimum coded units.

Abstract: A plurality of images that include the same eye is input (S11) and iris regions are extracted therefrom to obtain iris images (S12). After the plural iris images are subjected to transformation from a rectangular coordinate system to a polar coordinate system (S13) and rotational compensation (S14), the images are added together while a weight is attached to a pixel value in each coordinate of the polar coordinate system, to accumulate them as a single iris image (S15). An iris code is generated from the thus obtained single iris image (S16, S17).