Photogrammetric image processing apparatus and method
AssigneePENTAX Corporation
InventorToshihiro Nakayama
Life of this patent
Estimating the term…
Abstract
A photogrammetric image processing apparatus and method defining a plurality of pairs of images including a common target as belonging to the same groups (pairs), providing an image display area and drawing area on the screen of the display device, calculating valid mapping ranges for the pairs 1 to 4, and displaying the valid mapping ranges on the drawing area. When an arbitrary point is designated using a cursor in the drawing area, paired images corresponding to one of the valid mapping ranges containing the designated point are displayed in the image display area. Physical points corresponding to the paired images are designated, so that the three-dimensional coordinates of physical points are calculated, and a survey map is generated based on the three-dimensional coordinates.
Claims14
A photogrammetric image processing apparatus defining a plurality of images commonly including a target at a predetermined position as being in the same group, calculating the camera position of the photographing camera taking each image and the inclination of its optical axis for each image, designating a common physical point in each image, calculating three-dimensional coordinates of the physical point, and generating a survey map based on the three-dimensional coordinates, comprising:
- a display processor that has a image display area for displaying all of said images belonging to the same group, and a drawing area for displaying said survey map;
- an area computing processor that calculates a valid mapping range of the same group, which is shown in said drawing area, based on the camera position and the optical axis inclination;
- and
- a control processor that displays images of a predetermined group in said image display area, and displays said valid mapping range of said predetermined group in said drawing area.
A photogrammetric image processing method defining a plurality of images commonly including a target of a predetermined shape provided at a predetermined position and enabling output of an amount of displacement and rotational angle from an initial state as belonging to the same group, calculating the camera position of the photographing camera taking each image and the inclination of its optical axis for each image, displaying said image in an image display area of a display processor and designating a common physical point in each said image contained in said image display area, calculating three-dimensional coordinates of said physical point, generating a survey map based on the three-dimensional coordinates, and displaying said survey map in a drawing area of said display processor, comprising:
- a first step of calculating a range of guaranteed precision corresponding to each image based on the camera position and the optical axis inclination of each image included in the same group;
- a second step of calculating an overlapping area of the ranges of guaranteed precision of each said image of the same group to obtain a valid mapping range of the same group;
- and
- a third step of displaying images of a predetermined group in said image display area, and displaying said valid mapping range of said predetermined group in said drawing area.
A storage medium storing a photogrammetric image processing program defining a plurality of images commonly including a target of a predetermined shape provided at a predetermined position and enabling output of an amount of displacement and rotational angle from an initial state as belonging to the same group, calculating the camera position of the photographing camera taking each image and the inclination of its optical axis for each image, displaying said image in an image display area of a display processor and designating a common physical point in each said image contained in said image display area, calculating three-dimensional coordinates of said physical point, generating a survey map based on the three-dimensional coordinates, and displaying said survey map in a drawing area of said display processor,
- said photogrammetric image processing program including:
- a routine for calculating a range of guaranteed precision corresponding to each image based on the camera position and the cptical axis inclination of each image included in the same group;
- a routine for calculating an overlapping area of the ranges of guaranteed precision of each said image of the same group to obtain a valid mapping range of the same group;
- and
- a routine for displaying images of a predetermined group in said image display area, and displaying said valid mapping range of said predetermined group in said drawing area.
Dependencies are inferred from the claim text.