Desertification monitoring in Naiman-Qi, Inner Mongolia, China in the 1960's was conducted using satellite imagery of reconnaissance satellite of USA, CORONA. Imagery observed on 12th September 1961 and on 30th November 1970 were used in this study. The map developed by Chinese Academy of Science was utilized for supervised classification. The result clarified that in the north west part of the study area, desertification had markedly processed between 1961 and the 1990's. Except the north west area and river terrace along the Jiorai River where desertification almost stopped after the 1980's by artificial forestation. Therefore no much new desertified area had emerged in the northern part of Naiman-Qi. Remedies of desertification recommended to concentrate into north west area with enough care taken to river terrace along the Jiorai River after the series of studies completed by this study.
Recently, reduction of the construction cost and insufficiency of skilled hands are becoming serious problems on the construction plant from the point of view of the work efficiency. With this motive, the authors have been developing an ERGOMA system for improvement of working environment or evaluation of the work efficiency on the construction plant using sequential images. However, visualization or animation procedures are needed for easy understanding of human motion, for improvement of working environment or evaluation of the work efficiency on an ERGOMA system. This paper describes visualization of human motion using animation techniques, and investigates working load on the waist on the construction plant using 3D data of the waist and the head (helmet) obtained from video image sequences.
An algorithm to extract drainage networks by using digital elevation model (DEM) was proposed. It has three characteristic points, i.e., pre-specification of inland water areas, shortest path for outlet in flat areas, and restriction of filling level for depression areas. The algorithm was applied to DEM with 50m grid size covering Tohoku district of Japan, which has about 35 million inland grid points. The extracted drainage networks were relevantly compatible to those described in 1/25, 000 topographical maps, and also included a lot of finer drainages in rugged areas. The processing time by using HP9000/C3000 workstation system, however, was about 25 minutes.
The method for selection of appropriate band combinations for improvement of Sea Surface Temperature (SST) estimation accuracy is proposed. It is found that the proposed method for selection of appropriate band combinations for maximizing SST estimation accuracy using radiative transfer code, MODTRAN-3.7 in this case is useful to investigate a most appropriate SST retrieval algorithm as well as choosing an additional band to the existing band combinations. In comparison between the band combination of the existing NOAA/AVHRR and the results from this study, it is found that 60.2 to 98.4 [%] of improvement on SST estimation accuracy can be achieved for the proposed band combinations. Also it is found that 12 [μm] band would be better to shift to the longer wavelength. Meanwhile, the center wavelength of 3.7 [μm] band would be better to shift to the longer wavelength.