摘要:
Method and apparatus of reconstruction of images from an in vivo multi-camera capsule are disclosed. In one embodiment of the present invention, the capsule comprises two cameras with overlapped fields of view (FOVs). Intra-image based pose estimation is applied to the sub-images associated with the overlapped area to improve the pose estimation for the capsule device. In another embodiment, two images corresponding to the two FOVs are fused by using disparity-adjusted, linear weighted sum of the overlapped sub-images. In yet another embodiment, the images from the multi-camera capsule are stitched for time-space representation.
摘要:
A method for processing image data of an X-ray device (10) comprises the steps of: receiving a plurality of two-dimensional projection images (32) from an object of interest (22), wherein the projection images have been acquired by transmitting X-rays (20) through the object of interest (20) with respect to different view angles; generating a three- dimensional raw image volume (36) from the plurality of two-dimensional projection images (32) with respect to a coordinate grid (50) adapted to the geometry of the transmitted X-rays (20); and generating a deconvolved three-dimensional image (40) by applying a two- dimensional deconvolution to slices (52) of the three-dimensional raw image volume (36), which slices (32) are adapted to the coordinate grid (50).
摘要:
An image processing apparatus includes a divider that generates a plurality pieces of third image information on the basis of a plurality of pieces of first image information and a plurality of pieces of second image information, a determiner that determines, on the basis of information regarding a sample, a filter to be used for the plurality of pieces of third image information, and a processor that deconvolutes each of the plurality of pieces of third image information using the determined filter. An image sensor that has received first resulting light emitted from a sample that has received first light emitted from a first angle outputs the plurality of pieces of first image information. The image sensor that has received second resulting light emitted from the sample that has received second light emitted from a second angle outputs the plurality of pieces of second image information.
摘要:
A method is described for automatic recognition of anatomical structures in images obtained by positron emission tomography, comprising the steps of: - acquiring a 3D matrix of standardized uptake values, SUVs, associated with a plurality of PET pixels in an anatomic volume of a patient; - calculating the Jacobian matrix of the matrix of standardized uptake values, SUVs; - projection, in a predetermined anatomical direction, of the matrix of standardized uptake values, SUVs, or of its Jacobian matrix on an anatomic reference plane; - locating a two-dimensional minimum of the matrix of standardized uptake values, SUVs, or of its Jacobian matrix, projected on the anatomic reference plane; - locating a one-dimensional minimum in the anatomic direction of projection, corresponding to the coordinates of the two-dimensional minimum located on the reference anatomic plane of projection; and - determining a centre of gravity of the anatomical structure according to the coordinates of said two-dimensional and one-dimensional minima.
摘要:
A data processing method for determining the relative orientation of an object coordinate system of an anatomical object in a global co-ordinate system, comprising the steps of: acquiring a reference direction dataset representing a first reference direction of a line between a first anatomical landmark of a reference object and a second anatomical landmark of the reference object, and a second reference direction of a line between a third anatomical landmark of the reference object and a fourth anatomical landmark of the reference object, wherein the first and second reference directions are given in a reference coordinate system and the reference object corresponds to the anatomical object; acquiring an object direction dataset representing a first object direction of a line between the first anatomical landmark of the anatomical object and the second anatomical landmark of the anatomical object, and a second object direction of a line between the third anatomical landmark of the anatomical object and the fourth anatomical landmark of the anatomical object, wherein the first and second object directions are given in the global co-ordinate system and the landmarks of the anatomical object correspond to the landmarks of the reference object; calculating the orientation of the reference co-ordinate system relative to the global co-ordinate system which results in the best match between each of the reference directions and the respectively corresponding object direction; and—using the orientation of the reference co-ordinate system in the global co-ordinate system as the relative orientation of the object co-ordinate system.
摘要:
A fluorescence observation apparatus (1) according to the present invention includes a light source (3) that irradiates an object (X) with white light and excitation light; a fluorescence-image generating unit (62) and a white-light-image generating unit (61) that generate a fluorescence image G2 and a color white-light image (G1) of the object (X), respectively; a condition setting unit (63) that sets weights individually for multiple color component images constituting the white-light image (G1); and a combining unit (64) that combines at least one color component image to which the fluorescence image (G2) has been added and the other color component images while applying the weights that have been set by the condition setting unit (63), and the condition setting unit (63) sets the weights based on the color component images of the white-light image such that the weight for the color component image to which the fluorescence image (G2) is added is greater than the weights for the other color component images.
摘要:
A method includes increasing a dynamic range of a first sub-range (410, 510) of pixel intensity values of at least two images based on an intensity map, thereby creating at least two modified images, determining a deformation vector field between the at least two modified images, and registering the at least two images based on the deformation vector field. An image processing system (118) includes a processor (120) and a memory (122) encoded with at least one image registration instruction (124). The processor executes the at least one image registration instruction, which causes the processor to: increase a dynamic range of a first sub-range of pixel intensity values of at least two images based on an intensity map, thereby creating at least two modified images; determine a deformation vector field between the at least two modified images, and register the at least two images based on the deformation vector field.
摘要:
Provided are a method and apparatus for registering medical images. The method includes: setting, as a reference, axis an axis of a probe that is disposed to be parallel to an axis of an object; extracting a first sub-object from a first medical image that is obtained by using the probe; extracting a second sub-object from a second medical image that has a modality different from a modality of the first medical image; and registering the first medical image and the second medical image by aligning the first sub-object and the second sub-object about the reference axis.