翻訳と辞書 Words near each other ・ Spectral power distribution ・ Spectral printing ・ Spectral purity ・ Spectral pygmy chameleon ・ Spectral radius ・ Spectral regrowth ・ Spectral rendering ・ Spectral resolution ・ Spectral risk measure ・ Spectral Sciences Incorporated ・ Spectral sensitivity ・ Spectral sequence ・ Spectral set ・ Spectral shape analysis ・ Spectral signal-to-noise ratio ・ Spectral signature ・ Spectral slope ・ Spectral Sound ・ Spectral space ・ Spectral splatter ・ Spectral tarsier ・ Spectral test ・ Spectral theorem ・ Spectral theory ・ Spectral theory of compact operators ・ Spectral theory of ordinary differential equations ・ Spectral triple ・ Spectral Visions of Mental Warfare ・ Spectral width ・ Spectral Worship Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Spectral signature ： ウィキペディア英語版 Spectral signature Spectral signatures the difference in the reflectance/emittance characteristics with respect to wavelengths (i.e.,reflectance/emittance as a function of wavelength) is called as spectral signature. The spectral signature of stars indicates the composition of the stellar atmosphere. The spectral signature of an object is a function of the incidental EM wavelength and material interaction with that section of the electromagnetic spectrum. The measurements can be made with various instruments, including a task specific spectrometer, although the most common method is separation of the red, green, blue and near infrared portion of the EM spectrum as acquired by digital cameras. Calibrating spectral signatures under specific illumination are collected in order to apply an empirical correction to airborne or satellite imagery digital images. The user of one kind of spectroscope looks through it at a tube of ionized gas. The user sees specific lines of colour falling on a graduated scale. Each substance will have its own unique pattern of spectral lines. Most remote sensing applications process digital images to extract spectral signatures at each pixel and use them to divide the image in groups of similar pixels (segmentation) using different approaches. As a last step, they assign a class to each group (classification) by comparing with known spectral signatures. Depending on pixel resolution, a pixel can represent many spectral signature "mixed" together - that is why much remote sensing analysis is done to "unmix mixtures". Ultimately correct matching of spectral signature recorded by image pixel with spectral signature of existing elements leads to accurate classification in remote sensing. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Spectral signature」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.