翻訳と辞書 Words near each other ・ Shift matrix ・ Shift operator ・ Shift Out and Shift In characters ・ Shift pattern ・ Shift plan ・ Shift register ・ Shift register lookup table ・ Shift resistor ・ Shift rule ・ Shift space ・ Shift theorem ・ Shift time ・ Shift work ・ Shift work (disambiguation) ・ Shift work sleep disorder ・ Shift-and-add ・ Shift-invariant system ・ Shift-Minus Vol. 1 ・ Shift-reduce parser ・ Shift-share analysis ・ Shift-Work (album) ・ Shifta ・ Shifta War ・ Shiftability theory ・ Shiftboard ・ SHIFTCOR ・ Shifted force method ・ Shifted Gompertz distribution ・ Shifted log-logistic distribution ・ Shiftee 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 Shift-and-add ： ウィキペディア英語版 Shift-and-add The shift-and-add method (more recently "image-stacking" method) is a form of speckle imaging commonly used for obtaining high quality images from a number of short exposures with varying image shifts. It has been used in astronomy for several decades, and is the basis for the image stabilisation feature on some cameras. The method involves calculation of the differential shifts of the images. This is easily accomplished in astronomical images since they can be aligned with the stars. Once the images are aligned they are averaged together. It is a basic principle of statistics that variation in a sample can be reduced by averaging together the individual values. In fact, when using an average, the signal-to-noise ratio should be increased by a factor of the square root of the number of images. A number of software packages exist for performing this, including IRAF, RegiStax, Keiths Image Stacker, Hugin, and Iris. == See also == * Focus stacking * Lucky imaging 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「Shift-and-add」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.