Matches 151 - 200 out of 205 < 1 2 3 4 5 >
Match Document Document Title
5999661 Image processing method and system  
An image processing system and method for processing a source digital image with a first energy sensitivity parameter value and including first pixels of first pixel values into a target digital...
5982939 Enhancing texture edges  
A system and method of antialiasing edges of a texture that is being projected onto a polygon surface are described. The system operates by determining an initial opacity value of a pixel of the...
5974190 Photographed image reproducing apparatus  
An image reproducing apparatus is adapted for reproducing a photographed image recorded on a film, the film having photographic information about the photographed image. The apparatus includes a...
5956421 Image processing method and apparatus for determining a binarization threshold value used for binarizing a multi-valued image and performing binarization processing  
An image processor determines a binarization threshold value used for binarizing a multi-valued image, and performs binarization processing on the multi-valued image. The multi-valued image is...
5953440 Method of measuring the focus of close-up images of eyes  
In a method of determining whether an image of an eye is in focus a set of pixels is selected along a line passing through the pupil/iris boundary such that the set contains at least 5 iris portion...
5940537 Method and system for compensating for geometric distortion of images  
A method of and system for compensating for geometric distortion in a two-dimensional image finds fiducial marks in the image plane corresponding to fiducial marks in the object plane. The...
5933513 Image processing system for expanding focal depth of optical machine  
An optical microscope comprises an image forming system including a CCD camera for picking up an image of a sample S, exchangeable objective lenses for projecting the image of the sample S on the...
5931960 Method and apparatus for handling error diffusion values  
A method and system accumulates an error from an error diffusion process used for rendering continuous images. A scan from an original document generates a plurality of original pixel values which...
5915048 Method and apparatus for discriminating in-focus images from out-of-focus light signals from background and foreground light sources  
A method and apparatus for discriminating an in-focus image from an out-of-focus image which may be implemented in accordance with either or both an illumination procedure and a signal detection...
5915047 Image pickup apparatus  
There is provided an image pickup apparatus capable of operating only at the time of occurrence of moire and reducing the moire without the need to use an optical low-pass filter and without...
5903659 Adaptive non-uniformity compensation algorithm  
An adaptive method for removing fixed pattern noise from focal plane array (FPA) imagery. A set of correction terms is applied to the focused image from the FPA, and a filter is applied to the...
5883982 Astigmatism measurement apparatus and method based on a focal plane separation measurement  
A computer receives image data from a star-shaped optical target in the object plane and calculates angle-dependent boundary sharpness. The horizontal, x-direction, amplitude derivative and the...
5878152 Depth from focal gradient analysis using object texture removal by albedo normalization  
The invention provides a method and apparatus for obtaining a range image of an object. The method includes the act of "albedo normalization", i.e., removing the effects of object reflectance using...
5862265 Separation apparatus and method for measuring focal plane  
A computer receives image data from a star-shaped optical target in the object plane and calculates angle-dependent boundary sharpness. The horizontal, x-direction, amplitude derivative and the...
5835641 Image pick-up apparatus for detecting and enlarging registered objects  
An image pick-up apparatus having an optical zoom mechanism and an electronic zoom mechanism, wherein the optical zoom mechanism and the electronic zoom mechanism are adjusted in accordance with...
5825938 System and method for enhancing the sharpness of a colour image  
A color image is locally discoloured in the vicinity of edges. The edges extend, for example, between a superposed foreground and a background in a computer-generated image, but also between...
5822466 Method and means of spatial filtering  
The invention relates to a method of spatial filtering a point distribution representing a structure buried in noise and each of the points of which are defined by n coordinate values of an...
5793900 Generating categorical depth maps using passive defocus sensing  
A method is disclosed for generating a categorical depth map of a scene using passive defocus sensing. In a preferred embodiment three synchronized CCD cameras focused at different distances detect...
5790710 Autofocus system for scanning microscopy  
Reliable autofocus is required to obtain accurate measurements of fluorescent stained cellular components from a system capable of scanning multiple microscope fields. Autofocus could be performed...
5774237 Image reading apparatus  
An image reading apparatus is for reading a document such as a book from above with the target faces thereof placed upwardly. The apparatus allows for correction of distortions of the image,...
5768401 Balanced focus system and method for achieving optimal focus of different areas of an object that are concurrently imaged  
A balanced focus system and method achieve optimal focus of different areas of an object that are concurrently imaged and then combined to form a combined image. The balanced focus method is...
5724070 Common digital representation of still images for data transfer with both slow and fast data transfer rates  
A computer system includes a local non-volatile data storage medium and a visual display device. A still image is stored as a compressed data file in a multi-resolution compression format on the...
5710829 System and method for focused-based image segmentation for video signals  
Motion video is represented by digital signals. The digital signals can be compressed by coding to reduce bitrate and thus save time and expense in transmitting and reproducing the video. The...
5684890 Three-dimensional reference image segmenting method and apparatus  
The images of an object equivalent to those obtained when as object is viewed respectively by the right and left eyes are subdivided into small areas with overlaps allowed therebetween and are...
5680484 Optical image reconstructing apparatus capable of reconstructing optical three-dimensional image having excellent resolution and S/N ratio  
An optical image reconstructing apparatus includes an optical image forming system. A focused surface controller moves the position of an object surface focused by the optical image forming system....
5647025 Automatic focusing of biomedical specimens apparatus  
A method for automatically focusing on a slide includes the steps of locating a coverslip, acquiring images from predetermined focal depths in the slide, and starting at an initial focal depth...
5642440 System using ergodic ensemble for image restoration  
Established text characteristics help generate a random ergodic ensemble of characters constituting a random text image. The image is scaled in accordance with different optical parameters such as...
5621822 Method of detecting focus position of object from variable gray level image of object  
A focus position detecting method includes: obtaining quantized two-dimensional image data including an object to be in focus with respect to an optical system by imaging the object through the...
5617489 Optical adaptive thresholder for converting analog signals to binary signals  
An adaptive threshold for converting an analog video signal to a binary video signal. This video system employs two identical array sensors. These sensors are operated synchronously and each has...
5606173 Arrangement for aligning, focusing and normalizing imaging system  
A set of track gauges for use in aligning, focusing and normalizing an imaging system of a high speed document processor have been provided. Each of the gauges fit within a track (14) in front of...
5592563 Imaging of 3-dimensional objects  
There is provided a device and a method for the formation of a high-resolution image of a 3-dimensional object. The surface of the object is scanned stepwise by a linear detector matrix, so that...
5570433 Apparatus and method for defocusing images  
The present invention discloses an image defocusing apparatus for defocusing an image formed on a screen by modeling an object in a boundary box by updating pixel values on the image to approximate...
5511155 Method and device for synthesizing all-objects-in-focus images  
A method and apparatus for forming a synthesized optical image with all of the desired objects in focus. A prescribed number of optical images of the same scene are provided by recording an optical...
5506912 Imaging device capable of tracking an object  
An imaging device having a signal-processing section, an imaging section, and X- and Y-direction angle wire drivers. The imaging section sequentially form images of an object. The signal-processing...
5193124 Computational methods and electronic camera apparatus for determining distance of objects, rapid autofocusing, and obtaining improved focus images  
The present invention is a method and apparatus for determining the distance of a surface patch of an object from a camera system and also for focusing a surface patch of such object as well as...
5185822 Focusing structure in an information reading apparatus  
In an automatic sorting system for sorting objects conveyed on a conveyor, a camera is used for pattern recognition of the object being sorted. Due to the difference in sizes of the objects being...
5153916 Method and apparatus for detecting focal plane  
A method and apparatus measures an image plane of a test pattern projected onto a surface of a sample disposed on a stage to precisely detect the image plane to thereby obtain a precise alignment...
5148502 Optical image input/output apparatus for objects having a large focal depth  
An optical apparatus which can reproduce an image having a large focal depth without losing resolution and luminance, wherein there is inputted a plurality of images focused on different object...
5068912 Track gauges for aligning and focussing the imaging system in a high speed document handling system  
A set of track gauges for use in aligning, focussing and normalizing an imaging system of a high speed document processor have been provided. Each of the gauges fit within a track (14) in front of...
5040228 Method and apparatus for automatically focusing an image-acquisition device  
Autofocusing of a lens (18) on a television camera (12) is achieved by first processing the image captured by the camera to establish a histogram of the intensity gradients for each of a plurality...
5003166 Multidimensional range mapping with pattern projection and cross correlation  
A range camera is provided for the determination of range to an object through the utilization of a system which projects a limited depth of field light pattern onto an object and measures the...
4947323 Method and apparatus for measuring small spatial dimensions of an object  
A method and apparatus are disclosed for measuring spatial dimensions of an object. The object is positioned between a radiation source and a radiation sensitive surface, such as between an X-ray...
4907287 Image correction system for scanning electron microscope  
An image correcting apparatus for correcting distortion appearing in an image produced by electron beam scanning in a SEM under the influence of electric, magnetic and mechanical vibrations through...
4903204 Matrix inversion tomosynthesis improvements in longitudinal X-ray slice imaging  
The present invention describes improvements to digital tomosynethesis, whereby a plurality of x-ray projection images are shifted and summed to form a matrix of tomographs at variable plane...
4899194 Method of and device for detecting image  
A method of and device for detecting an image relevant for subsequent auto-focusing operation, wherein one focus zone is scanned by an image sensor and a histogram for the one focus zone is made....
4731864 Photographic camera simulation systems working from computer memory  
A camera field-of-view is mapped with full depth-of-focus into electronic memory. Data concerning image intensities at selected points in image space are stored, along with data concerning the...
4661986 Depth-of-focus imaging process method  
An improved-focus 2-D image is derived from an assemblage of M separately focused 2-D images of the same 3-D scene by (1) employing the Burt Pyramid image analyzing technique to separately analyze...
4584704 Spatial imaging system  
A spatial imaging system includes a variable focus lens for scanning a visual field. The depth of field of the lens system is narrow relative to the range of the field to be scanned so that visual...
4559645 Image information processing device  
An image information processing device comprising a sample holding circuit which can hold only required image data, an image information processing circuit and a central operation circuit in order...
4408288 Distance measuring arrangement  
A distance measuring arrangement for use, for example, in a camera and the like equipped with an automatic focus control system which includes an illuminance intensity detecting portion for...
Matches 151 - 200 out of 205 < 1 2 3 4 5 >