Abstract: An image is reconstructed based upon a filtered backprojection (FBP) technique using a reconstruction filter which is customized or shaped by parameters including a weight value that is determined for weighing projection data according to a predetermined noise model. The weight value is determined based upon rays or views in the projection data. A regularization term is also combined with the noise-weighted FBP.

Abstract: Systems and methods for processing data representative of a full color image. Such systems may comprise the steps of assisting a color blind person to indicate portions of an image which to their color-deficient vision are indistinguishable, and altering the image to cause those portions to become distinguishable and identifiable.

Abstract: A video stabilization system processes a video segment to remove unwanted motion, resulting in a stabilized video segment. The video stabilization system tracks one or more features through multiple frames, identifies ideal positions for the features, and then generates information (e.g., rotation, scaling, shearing, and/or translation) to transform all pixels in each frame to ideal positions based on the ideal positions of the features.

Abstract: In an image processing apparatus, the head top of a subject is detected, and the positions of a camera and a mirror are adjusted so that the coordinates of the detected head top coincide with the coordinates of a reference head top. When it is determined that the coordinates coincide with each other, the image size of a face of the subject is detected, and the zoom of the camera is controlled so that the detected image size and a reference image size coincide with each other. When it is determined that the image size of the face and the reference image size coincide, the positions of the camera and the mirror are adjusted again so that the coordinates of the head top of the subject and the coordinates of the reference head top coincide with each other.