Patent ID: 6693650
Filing Date: 2004-02-17
Classification: G01C

Abstract:
An image processing computer system for a photogrammetric analytical measurement in which a survey map is produced on the basis of plural pairs of pictures photographed at different positions, each picture including a photographed target, said system comprising:a memory that stores plural frames of image data for said pictures; an image-data-reading controller that reads the plural frames of image data from said memory in a predetermined order such that two consecutive frames of image data form a pair of pictures; a monitor that displays two pictures in each pair side by side thereon to rearrange the displayed pictures such that two pictures displayed side by side form a proper pair for producing a survey map section; and a determiner that determines whether two pictures displayed side by side are defined as left-hand and right-hand pictures or right-hand and left-hand pictures with respect to the targets photographed thereon, whereby left-hand and right-hand pictures in each pair are displayed at left and right sides on said monitor, said determiner comprising: a first calculator that calculates photographing positions of the pictures displayed side by side with respect to coordinate systems defined on the photographed targets; a vector-definer that defines two vectors directed from origins of the coordinate systems to said photographing positions; and a second calculator that calculates an outer product of said two vectors, whereby the determination is performed by said determiner on the basis of whether the calculated outer product is positive or negative.