摘要:
Lung segmentation and bone suppression techniques are helpful pre-processing steps prior to radiographic analyses of the human thorax, as may occur during cancer screenings and other medical examinations. Autonomous lung segmentation may remove spurious boundary pixels from a radiographic image, as well as identify and refine lung boundaries. Thereafter, autonomous bone suppression may identify clavicle, posterior rib, and anterior rib bones using various image processing techniques, including warping and edge detection. The identified clavicle, posterior rib, and anterior rib bones may then be suppressed from the radiographic image to yield a segmented, bone suppressed radiographic image.
摘要:
A computer extracts a plurality of candidate lines that are observed from a position of an imaging device that captures an image of an object from among a plurality of candidate lines included in shape information of the object (step 701). The computer generates plural pieces of association information indicating a prescribed number of combinations obtained by respectively associating the prescribed number of candidate lines of the observed plurality of candidate lines with the prescribed number of feature lines of a plurality of feature lines detected from the image (step 702). The computer determines an association result according to respective errors of the plural pieces of association information (step 703).
摘要:
The present invention discloses an intelligent equipment-based motion sensing control method and system, and an intelligent equipment. The method includes: collecting user image data; according to the user image data, acquiring an image contour of a user; according to the image contour, acquiring a first motion track of the user on an imaging plane; according to the change of a characteristic length on the image contour and/or the change of a focal distance of a camera, acquiring a second motion track of the user in a direction perpendicular to the imaging plane; and according to the first motion track and the second motion track, generating motion sensing data.
摘要:
A system for obtaining a probable 3D map of an occluded surface of an object is provided. The system receives an initial 3D map of a visible surface of the object and identifies one or more symmetries of the initial 3D map. The system computes the probable 3D map of the occluded surface by projecting points of the initial 3D map into occluded regions of space according to the identified symmetries. The system can also comprise an imager for obtaining the initial 3D map. The actual occluded surface cannot be known with absolute certainly because it is occluded; however, the computed 3D map will closely resemble the actual occluded surface in many instances because most objects possess one or more symmetries and the computed 3D map is based on such symmetries that are identified in the initial 3D map of the object.
摘要:
The invention relates to a method and an according apparatus and system for segmentation of anatomical structures in medical images, wherein an anatomical structure represented in a medical image is segmented by applying an algorithm based on a morphological active contour without edges (MACWE) to the medical image, wherein in the algorithm based on the morphological active contour without edges one or more features relating to a surrounding and/or context of the anatomical structure represented in the medical image are considered.
摘要:
An image processing apparatus includes: a gradient information calculating unit that calculates gradient information of each of pixels, based on pixel values of an intraluminal image; a closed region creating unit that, based on the gradient information, creates a closed region satisfying a condition where the closed region does not include, on the inside thereof, any pixel of which the gradient strength is equal to or higher than a predetermined value, and also, the boundary of the closed region does not curve toward the interior of the closed region, with a curvature equal to or larger than a predetermined value; and an abnormal part detecting unit that detects an abnormal part from the inside of the closed region.
摘要:
Methods, systems, and media for determining carotid intima-rnedia thickness are provided. In some embodiments, a method for determining carotid intima-media thickness of a carotid artery is provided, the method comprising: receiving a frame from a plurality of images, wherein each of the plurality of images includes a portion of the carotid artery; receiving a user selection of a location with the frame; setting a region of interest, based on the received user selection; detecting a first border and a second border within the region of interest; applying one or more active contour models to the first border and the second border to generate a smoothed first border and a smoothed second border; and calculating the intima-media thickness based at least in part on the smoothed first border and the second smoothed border.
摘要:
Disclosed is a method of 3D object delineation from 3D seismic data comprising the steps of, providing 3D seismic data (144,200,300; processing the data (210,310) based on at least one characteristic (320) whereby said characteristic is extracted from the data and compared with at least one reference characteristic and delineated (330) based on the comparison, and defining a geological element (340) based on the delineation. The characteristics (320) may be adjusted. Data can be processed (210,310) based on one characteristic (222,232) then processed based on a second characteristic (224,234) or data is processed based on two characteristics substantially simultaneously (252). Data may be processed n times (246) producing n delineations from which the geological element is defined (260). An algorithm is provided for processing the data which may shift an evolving shape description of an object between explicit (222,234) and implicit (224,232) representations, where each shift applies a transformation to the object. Multiple sources of data (200,200', 200") may be utilised simultaneously to drive the delineation process.
摘要:
The invention relates to a method for creating a final real-time photorealistic image (5) of a virtual object (3) corresponding to a real object (4), which is arranged on an original photo (1) of a user, in a realistic orientation related to the position of said user, and comprises the following steps of: 510) detecting the presence of a placement area for the object in the original photo (1); 530) determining the position of characteristic points of the placement area for the object in the original photo (1); 540) determining the 3D orientation of the face (2), i.e., the angles Φ and Ψ of the camera having taken the photo (1) relative to the principal plane of the placement area for the object; 550) selecting the texture to be used for the virtual object (3), in accordance with the angle-of-view, and generating the view of the virtual object in the 3D(Φ, Ψ)/2D (Θ, s) position in question; 560) creating a first rendering (28) by establishing a layered rendering in the correct position consistent with the position of the placement area of the object (2) in the original photo (1); and 570) obtaining the photorealistic rendering by adding overlays referred to as semantic overlays, so as to obtain the final image (5).