摘要:
In order to simplify a photographing operation when providing a texture original. image, and to remove a useless operation when extracting a necessary region from the texture original image, the necessary region is assigned in an original image, serving as a base for a texture, using characteristic points of a portion onto which the texture is to be mapped, and a quadrangle having a minimum area is extracted from among quadrangles enclosing the assigned region. An image enclosed by the extracted quadrangle is transformed into a rectangular image having a desired size, and the assigned region is transformed into a region in the rectangular image. The obtained rectangular image and data of the characteristic points for assigning the region are output as texture data. In order to automatically correlate the positions of points assigned in a polygon image with the positions of points assigned in the texture original image including a necessary texture image, respective vertices of the polygons of the displayed polygon image and corresponding points in the displayed texture original image are assigned. Thus, the texture image including the corresponding points is obtained, and position information of the corresponding points in the texture image is provided for the respective vertices assigned in the polygon image.
摘要:
For providing a method and an apparatus for easy alignment of two surface shapes 1, 2 of a three-dimensional object, obtained from different directions of line of sight, there are executed to enter data of the two surface shapes, to initialize and store the direction of line of sight in the projected display of the surface shapes, the variables defining the position and direction of the surface shape 2k, and the position of a section plane for the surface shapes 1, 2, to display projected images and section images, then to change the setting of the position and direction of the surface shape 2 and the position of the section plane, thereby aligning the surface shapes 1 and 2, and, after the alignment, to release the amounts of translation and rotation of the surface shape 2.
摘要:
For providing a method and an apparatus for easy alignment of two surface shapes 1, 2 of a three-dimensional object, obtained from different directions of line of sight, there are executed to enter data of the two surface shapes, to initialize and store the direction of line of sight in the projected display of the surface shapes, the variables defining the position and direction of the surface shape 2k, and the position of a section plane for the surface shapes 1, 2, to display projected images and section images, then to change the setting of the position and direction of the surface shape 2 and the position of the section plane, thereby aligning the surface shapes 1 and 2, and, after the alignment, to release the amounts of translation and rotation of the surface shape 2.
摘要:
Provided is a method of setting an internal parameter or an external parameter of a camera. In this method, there is acquired a picked-up image obtained by picking up a calibration pattern in which black pattern elements and black-and-white pattern elements are arranged on a plane using the camera. Then, a black continuation area and a white continuation area are obtained by quantizing the picked-up image, the black pattern elements and the black-and-white pattern elements in the picked-up image are judged from each other based on the obtained black area and white area, the pattern elements in the picked-up image are associated with the pattern elements in a space based on an arrangement relationship between the judged black pattern elements and black-and-white pattern elements, and the internal parameter or the external parameter is set.
摘要:
With the use of a human visual characteristic in which a visual resolution is highest at a human eye point, and is remarkably decreased with a distance from the eye point, an image in the center vision area is created by a superior algorism while an image in the peripheral area is created by an algorism having a relatively light burden, thereby the burden of calculation for an entire image is reduced while the real-time ability is maintained.
摘要:
In order to simplify a photographing operation when providing a texture original. image, and to remove a useless operation when extracting a necessary region from the texture original image, the necessary region is assigned in an original image, serving as a base for a texture, using characteristic points of a portion onto which the texture is to be mapped, and a quadrangle having a minimum area is extracted from among quadrangles enclosing the assigned region. An image enclosed by the extracted quadrangle is transformed into a rectangular image having a desired size, and the assigned region is transformed into a region in the rectangular image. The obtained rectangular image and data of the characteristic points for assigning the region are output as texture data. In order to automatically correlate the positions of points assigned in a polygon image with the positions of points assigned in the texture original image including a necessary texture image, respective vertices of the polygons of the displayed polygon image and corresponding points in the displayed texture original image are assigned. Thus, the texture image including the corresponding points is obtained, and position information of the corresponding points in the texture image is provided for the respective vertices assigned in the polygon image.
摘要:
With the use of a human visual characteristic in which a visual resolution is highest at a human eye point, and is remarkably decreased with a distance from the eye point, an image in the center vision area is created by a superior algorism while an image in the peripheral area is created by an algorism having a relatively light burden, thereby the burden of calculation for an entire image is reduced while the real-time ability is maintained.