Siemens Corporate Research,Inc.
Siemens Corporate Research,Inc. Patent applications | ||
Patent application number | Title | Published |
---|---|---|
20100057248 | System and Method for Parcel Singulation Based on Collision Detection - According to an aspect of the invention, there is provided a method for detecting collisions of parcels on a moving conveyor belt, including the steps of representing each belt with a rectangular cell mesh of columns and rows, for each parcel on the belt system, identifying those cells on a belt where each parcel contacts the belt, marking a parcel's new cell position after a predetermined time frame in a direction parallel to the motion, for each marked cell, incrementing a corresponding collision detector counter in a collision detection table, marking a parcel's new cell position after the predetermined time frame in a direction perpendicular to the motion, for each marked cell, incrementing a corresponding collision detector counter in the collision detection table, and checking the collision detector counter value in each cell, where a value greater than or equal to 3 indicates a parcel collision. | 03-04-2010 |
20100034446 | System and Method for Coronary Digital Subtraction Angiography - A method and system for extracting coronary vessels fluoroscopic image sequences using coronary digital subtraction angiography (DSA) are disclosed. A set of mask images of a coronary region is received, and a sequence of contrast images for the coronary region is received. For each contrast image, vessel regions are detected in the contrast image using learning-based vessel segment detection and a background region of the contrast image is determined based on the detected vessel regions. Background motion is estimated between one of the mask images and the background region of the contrast image by estimating a motion field between the mask image and the background image and performing covariance-based filtering over the estimated motion field. The mask image is then warped based on the estimated background motion to generate an estimated background layer. The estimated background layer is subtracted from the contrast image to extract a coronary vessel layer for the contrast image. | 02-11-2010 |