Abstract:
A method of estimating an orientation of a body is provided. The method includes determining a reference point based on a first region of a body, calculating a translation matrix of a world coordinate system based on the reference point; determining a first vector based on the reference point and a second region of the body, calculating a first rotation matrix rotated by an angle α about a first rotation vector, which is perpendicular to the first vector and a Z-axis of the world coordinate system, as a first rotation axis, determining a second vector based on the first vector and a third region of the body, calculating a second rotation matrix rotated by an angle β about the Z-axis of the world coordinate system as a second rotation axis, and calculating a transformation matrix based on the translation matrix, the first rotation matrix, and the second rotation matrix.
Abstract:
A method for detecting an object includes inputting information of a moving object included in a plurality of images and generating a regression tree. In response to input of a new image, the system communicates information of a moving object included in the newly inputted image into the regression tree, and determines a size of a person included in the new image based on a resultant value of the regression tree.
Abstract:
An apparatus configured to estimate a position of a part of an object in an image includes: an image receiver configured to receive the image; a reference point setter configured to set a reference point in the image; a controller configured to generate information about the reference point by repeating a process a predetermined number of times, the process comprising obtaining one piece of direction information about a probability and a direction that the reference point is to be moved to the part of the object by a classifier, and resetting the reference point by moving the reference point a predetermined distance based on the one piece of direction information; and a location estimator configured to estimate a position of the part of the object in the image by using the information about the reference point as the reference point is reset the predetermined number of times.