System for measuring geometrical characteristic parameter of picture

Abstract

The invention discloses a system for measuring geometrical characteristic parameters of a picture, and belongs to the field of application of computer assistant measurement analysis technology. The system comprises a position signal acquisition device, a data processor, a display screen, a function selector and a signal transmitter, wherein the signal transmitter is used to transmit the signal of a position point selected by a user on the surface of the measuring picture; the position signal acquisition device acquires the signal of the position point transmitted by the transmitter from a picture area facing the position signal acquisition device so as to determine the area the user is interested in; the data processor receives the acquisition relative coordinate transmitted by the position signal acquisition device and converts the coordinate to the real relative coordinate, and according to the function selection signal provided by the function selector, the data processor processes the real relative coordinate and sends the processing results to the display screen. The system adopts a digitized measurement method and allows the user to conveniently measure and compare the geometrical characteristic parameters of pictures the user interested in, such as distance, angle, shape and area, while reading pictures.

Description

technical field [0001] The invention belongs to the application field of computer-aided measurement and analysis technology, and specifically relates to a system for measuring geometric characteristic parameters of pictures. The pictures can be various non-digital images, such as: maps printed on paper, photos printed on plastic, and medical images. Chest X-ray etc. The system is a tool for measuring and comparing geometric feature parameters such as distance, angle, shape, area, etc. in pictures, and it is a tool system for assisting in reading pictures. Background technique [0002] In many cases, picture readers need to obtain certain geometric feature parameters in pictures, including distance, angle, shape and area, etc. For example, travelers want to know the distance between two places on the map and the route distance, the doctor needs to know the size of the tumor displayed on the medical film, or the angle between two adjacent bones, etc., if a tool can be provide...

AI Technical Summary

Problems solved by technology

Although such a method can measure some simple geometric feature parameters on the picture, it cannot easily measure the area and perimeter of the irregular area. Approximately replaces the perimeter of the irregular area, and the error is large

As for geometric shape parameters, such as: similarity to a circle, smoothness of area boundaries, etc., there is no simple non-digital measurement tool available

[0003] In short, it is of practical significance to measure the geometric characteristic parameters such as distance, angle, shape and area in the picture, but the geometric characteristic parameters calculated by the existing visual inspection method and non-digital measurement method often have large errors and cannot be very accurate. It is very convenient to meet the measurement needs of the geometric characteristic parameters in the picture

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