LENGTH MEASUREMENT METHOD TO BE USED IN TWO-DIMENSIONAL SHOT PICTURE

• Main Authors: LAI PENG CHENG, CHIANG CHUN-HSIEN
• Format: Patent
• Language: English; Japanese
• Published: 12.04.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

PROBLEM TO BE SOLVED: To provide a length measurement method to be used in a two-dimensional shot picture.SOLUTION: A length measuring method to be used in a two-dimensional picture includes the following steps of: first, shooting a reference object and a measurement target, and forming a reference picture and a measurement target picture; prescribing a size of a geometric shape possessed by the reference object, displaying the geometric shape expressed by a formula of an area calculation and preliminarily storing the prescribed size and the formula in a computer; next, separating a reference object picture from the reference picture, scanning the total number of pixels covered by the reference object picture, and calculating the number of pixels to which each unit length of the reference object picture corresponds from the prescribed size and the formula of the area calculation; and then, only by marking arbitrary two points in the measurement target picture on a screen of a computer, calculating the number of pixels to which the two points and the unit length correspond by the computer.SELECTED DRAWING: Figure 1 【課題】二次元の撮影映像に用いられる長さ測定方法（a method of length measurement for 2d photography）を提供する。【解決手段】二次元の撮影映像に用いられる長さ測定方法は以下の工程を含む。先ず、参照物体及び測定対象がそれぞれ撮像され、参照映像及び測定対象映像が形成される。参照物体が有する幾何形状は大きさが既定されると共に面積計算の公式で表示され、且つ所定の大きさ及び面積計算の公式は共にコンピューター中に予め保存される。次いで、参照映像から参照物体映像が分離されると共に参照物体映像がカバーする総画素数がスキャンされ、所定の大きさ及び面積計算の公式から参照物体映像の各単位長さが対応する画素数が算出される。その後、コンピューターのスクリーンに測定対象映像中の任意の２点が標記されるのみで、コンピューターはこの２点及び単位長さが対応する画素数の比率に基づいてこの２点の実際の長さが算出させる。【選択図】図１