1990 年 10 巻 1 号 p. 93-99
Remotely sensed data, especially satellite images, have used for a wide variety of applications. The necessity of personal system for satellite image analysis has been recently recognized. Then the prototype system is developed for monitoring the environmental changes. Basic concepts of the system are as follows ; object oriented, friendly manmachine interface, cooperative use of existing software, and less logical/physical restrictions. Based on these concepts, the following features are implemented to the prototype system.
1) Handling capability of 3 bands with 1024 columns by 1024 lines images. Browsing is available by scrolling windows.
2) Image magnification by factors of 0.5 to 32. Multi-window is also available if the system has enough memory.
3) Pull-Down-Menu for function selections. Dialog-box is used to input characters or numbers, and select the function.
4) Full compatibility to the environment of the operating system such as Desk Accessary (resident programs) or Multitask.
As the prototyping results, the future possibilities of a system based on a personal computer were demonstrated.
This system is applied to the environmental monitoring. The temporal vegetation changes in Kanto Area are analyzed by two or three LANDSAT TM images, which were observed in different years. The loss of vegetations are especially clear in the Kawasaki and Tama. The basic characteristics of the thermal infrared images are examined in Miura peninsula. In this study, the implemented features of the prototype system proved to be very useful.