Nec Corporation

Nippon Avionics Co., Ltd.

Tokyu Construction Co., Ltd.

Tetsu Nishioka

Masao Kawamura

Masakazu Okada

Manabu Ishikawa

Munehiro Ohshiro

Tetsuhisa Minami

Spectral image signals simultaneously provided by two CCD television cameras for an R-image and an IR-image are selected by a visual controller and are sent sequentially to a sending parabolic antenna where two spectral radiometers provided with photosensors measure the amounts of radiation energy of light rays of wavelengths around a wavelength corresponding to the R-image and light rays of wavelengths around a wavelength corresponding to the IR-image to obtain spectral radiation data representing the amounts of spectral radiation energy, respectively. The measured spectral radiation data is integrated and recorded by a data logger and sent through a modem and a connection box to a sending parabolic antenna, and spectral image signals representing the R-image and the IR-image received by a receiving antenna are applied to an image processing unit and the spectral radiation data received by the receiving parabolic antenna is transferred through a connection box and a modem to a computer where an image processing unit calculates a spectral reflection ratio IR/R, where IR is a corrected spectral reflectance of light rays corresponding to the IR-image and R is a corrected spectral reflectance of light rays corresponding to the R-image, and the reflectance ratio IR/R is displayed on a television monitor.

Method of correcting a measured image formed by a television camera

Growing community of inventors

Tokyo, Japan

Tetsu Nishioka