Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Yu Fang"'
Publikováno v:
Advanced Materials Research. 710:438-441
The principium of measuring focus of aerial camera and the location of the actual image plane with CCD camera are introduced, and the methods to improve survey precision are described. The image is received by area CCD camera. The accuracy of orienta
Publikováno v:
Advanced Materials Research. 710:424-427
A system for orientation the best imaging location of aerial cameras is designed, and the working principle, hardware components of the system are described. The orientation information is produced by collimator. The best imaging location is determin
Publikováno v:
Advanced Materials Research. 571:312-315
A system is put forward which can automatically measure focus and estimate whether the aerial camera is off-focus and the situation of the factual image plane is in the focus depth range or not. The principle, the hardware composition and the softwar
Publikováno v:
Advanced Materials Research. 571:308-311
A measuring system of the focus surface message of bigger aperture aerial camera was described. The image is received by the collimator of long focus and area CCD camera. The location and size of the optimum image were measured effectively by using d
Publikováno v:
Advanced Materials Research. 571:304-307
In view of bigger error (0.24%) of conventional measuring method, this paper focuses on a bigger aperture aerial camera focus measuring system and discusses measuring principle and structure of the system. The image in this system is received by the
Publikováno v:
Advanced Materials Research. 267:699-703
Through the in-depth study of the existing digital watermark and vector graphics, from the characteristics of vector graphics itself, this paper presents a digital watermark implementation program based on vector graphics. This program is simple and