Abstract: An image encoding and/or decoding apparatus and method are provided. The image encoding apparatus includes: a transform unit removing spatial redundancy by transforming an original image being input; an allowable noise obtaining unit obtaining an allowable noise from the original image; a quantization parameter determination unit determining a quantization parameter by using the allowable noise; a quantization unit generating a quantized coefficient, by quantizing a transform coefficient provided from the transform unit by using the quantization parameter; and an entropy encoding unit entropy encoding the quantized coefficient to remove statistical redundancy.

Abstract: The invention relates to a camera calibration system and method thereof which is capable of easily performing camera calibration using a concentric circle pattern. According to the invention, a method of calibrating a camera calibrates the intrinsic parameters of the camera required to measure geometric information of an object using projection invariable characteristics of concentric circles. The method includes the steps of taking images of the calibration pattern consisting of two or more concentric circles located in the same plane and having different radius at different angles to obtain projected images calculating the central point of the projected images using a given algorithm, and calculating the principal point and focal point of camera using a nonlinear minimization algorithm based on the central point thus obtained.

Abstract: A method and apparatus for omni-directional image and 3-dimensional data acquisition with data annotation and dynamic rage extension method is capable of omni-directionally photographing, acquiring 3-dimensional images photographed by cameras having each different exposure amount in connection with the direction of height of an object, extending dynamic range, and generating an geographical information by entering an annotation such as photographing location and time into the photographed images, which can be connected with other geographical information system database. The apparatus includes one or more multi camera module(s) which are stacked and formed multi layers in the direction of height for acquiring 3-dimensional images and extending dynamic range of the 3-dimensional images, wherein each multi camera module includes a plurality of cameras symmetrically arranged with a specific point in a plane.

Abstract: The invention relates to a camera calibration system and method thereof, which is capable of easily performing camera calibration using a concentric circle pattern. According to the invention, a method of calibrating a camera calibrates the intrinsic parameters of the camera required to measure geometric information of an object using projection invariable characteristics of concentric circles. The method includes the steps of: taking images of the calibration pattern consisting of two or more concentric circles located in the same plane and having different radius at different angles to obtain projected images; calculating the central point of the projected images using a given algorithm, and calculating the principal point and focal point of camera using a nonlinear minimization algorithm based on the central point thus obtained.

Abstract: An automatic parcel volume capture system and an automatic parcel volume capture method are provided. An automatic parcel volume capture system in accordance with an embodiment of the present invention includes stereo image input means, image processing means, feature extraction means, and volume measurement means. The stereo image input means captures images of an object from at least two different angles. The image processing means performs signal-processing on the images captured by the stereo image input means and extracts region of object in the images. The feature extraction means extracts lines and cross points of the lines from results of the image processing means. The volume measurement means generates three dimensional model on the basis of the extracted images and measures volume of the object.

Abstract: The invention relates to a camera calibration system and method thereof, which is capable of easily performing camera calibration using a concentric circle pattern. According to the invention, a method of calibrating a camera calibrates the internal parameters of the camera required to measure geometric information of an object using projection invariable characteristic of concentric circles. The method comprises a first step of taking images of the calibration pattern consisting of two or more concentric circles located at the same plane and having different radius at different angles to obtain projection images of ellipses, a second step of calculating the central point of the projected concentric circles using a given algorithm, and a third step of calculating the principal point and focal point of camera using a nonlinear minimization algorithm based on the central point thus obtained.

Abstract: The present invention relates to a three-dimensional visual inspection method of semiconductor packages and apparatus using single camera, which is able to carry out a three-dimensional visual inspection of small-size, high-density semiconductor packages having a large-scale of integration by using a single camera. The present invention presents an optical system that can obtain a stereo image to extract distance information by using an LED light and a single camera, and it also presents a three-dimensional measurement/inspection method using the same.

Abstract: A stereo camera system for obtaining a stereo image of an object to measure distance between the stereo camera system and the object is provided. The stereo camera system 10 comprises a camera 11 and a prism 12 arranged at a desirable distance from the front side of the lens of said camera 11. The prism 11 may be a delta shaped biprism having a base 13, a first incline 14 and a second incline 15, in which both the first incline 14 and said second incline 15 obliquely face the lens of said camera 11. Alternatively, the prism may be a trigonal pyramid shaped triprism having a base and three inclines, in which the three inclines obliquely face the lens of said camera. The camera 11 may be a charge coupled device camera. The present invention also relates to a distance measurement system and a distance measurement method for measuring distance between the stereo camera system and an object using disparity of a stereo image of the object.