Abstract: Classification of targets in a digital image is accomplished by evaluating windowed portions of the image. A weighted sum is formed for each overlapping windowed portion of an image using a feature set corresponding thereto, each window's feature set and weighted sum is normalized, and a context matrix is defined for each window. A normalized score is defined for each window. A threshold criteria is compared to a maximum score that is based on the context matrix and the normalized score associated with each window. Each window having its maximum score satisfy the threshold criteria is classified as a possible target window and assigned to a group based on location of the possible target window in the image and its maximum score. A group score is assigned to each group. Each group having its corresponding group score satisfying a group threshold criteria is classified as a target.

Abstract: Detection and classification of targets in a digital image is accomplished by evaluating windowed portions of the image. A feature set is generated for each of a plurality of overlapping windowed portions, a weighted sum is formed for each portion based upon its feature set, and a context matrix is defined for each window. A score is formed from each context matrix and is normalized for each window. A threshold criteria is compared to a maximum score for each window. Each window having its maximum score satisfy the threshold criteria is classified as a possible target window and is assigned to a group based on location of the possible target window and its maximum score. A group score is formed for each group and compared to a group threshold criteria. Each group having its corresponding group score satisfying the group threshold criteria is classified as a target.

Abstract: A portable information terminal device comprising: an enclosure 180 of the portable information terminal device, an imaging element 143 provided within the enclosure 180, a first lens 141 provided within the enclosure 180 for the imaging element 143, a second lens 142, which focal length is shorter than that of the first lens, provided within the enclosure 180 for the imaging element 143, a lens selection means 180, provided within the enclosure 180, for selecting one of the first lens 141 and the second lens 142 so that a focal point of a selected lens is at the imaging element 143, and a transparent plate 122 for pressing a tip of a finger 131 of an user of the portable information terminal device, wherein the imaging element 143 captures fingerprint of the tip of the finger 131 on the transparent plate 122 by the second lens 142 selected by the lens selection means 180.

Abstract: A method is provided for the detection and classification of targets in a digital image of a structure having known characteristics. In general, windowed portions of the image are evaluated in context with the entire image and in terms of their location in the image. More specifically, a scoring scheme is used to identify relevant windows with the relevance of each window being evaluated in terms of location in the image and the known characteristics of the structure being imaged. Relevant windows satisfying a threshold criteria are grouped based on their relative location in the image. A group scoring scheme is applied to each group to identify and classify targets.

Abstract: For the purpose of enhancing a difference between pixels relating to a substantial structure in an image and other pixels, with each pixel constituting an image defined as a pixel of interest, the variance of pixel values is determined in a local region to which the pixel of interest belongs (508); and the pixel value of the pixel of interest is maintained when the variance of pixel values is significantly larger than the variance of noise, otherwise the pixel value of the pixel of interest is suppressed (510, 512).

Abstract: The image information processing system includes at least one image information processing apparatus, and at least one identification information registration specialized apparatus having no image confirmation function, at least one image information reading apparatus and means for establishing network-connection among these apparatuses.

Abstract: In order to detect abnormal objects with a low-cost arrangement at high speeds while avoiding unwanted influence of variations of a light source and/or regularly vibrating objects in the environment concerned, there is provided a block data calculation unit 4200 inputted from a camera into blocks, an object candidate extraction unit 4700 which compares image data of a frame to be processed and the immediately preceding frame in units of blocks to thereby extract an abnormal object candidate in accordance with the presence or absence of edges and a longitude-to-lateral edge ratio change rate, and an object judging unit 4800 for determining or “judging” whether the abnormal object candidate is a true abnormal object, wherein it is an abnormal object where movement of the abnormal object candidate is traceable for a prespecified length of time period.

Abstract: The present invention is directed to a method and apparatus of objectively testing the low contrast performance of an imaging system. Images of a uniform phantom and images of a low contrast detectability phantom are reconstructed. Thereafter, a group of pixels from an image of the uniform phantom are removed and replaced with a group of pixels from an image of the LCD phantom. A user or test observer is then prompted to identify which quadrant of the first phantom image contains a group of pixels from the LCD phantom. An accuracy of a user response is then determined and conveyed to the user. The present invention is applicable with a number of imaging modalities including computer tomography, magnetic resonance imaging, PET, ultrasound, and the like.