In Section 2, existing works on vision-based localization are reviewed, with focus on appearance-based techniques. Section 3 introduces polar higher-order local auto-correlation (PHLAC) which is then used for probabilistic localization based on Sequential Monte Carlo, described in Section 4. Results from experiments using a real robotic system are then presented in Section 5, along with an analysis of the PHLAC vectors and their robustness against noise and occlusion. Section6 deliberates on how the extracted vectors can be made more distinct for different locations and how invariance against illumination can be introduced directly into the extraction process. Finally, in Section 7, main contributions and results are summarized, and major strengths and weaknesses of our current system are discussed. 2. Vision-based localization A camera-based equivalent of a typical distance-based localization system would be acquiring a detailed threedimensional model of the environment [39]. This 3D model can then be used during localization to generate the expected 2D projections (camera images) at different locations. Instead of being able to internally generate complete camera images, the system could settle for being able to predict what features [49] would be detected at each location. The features in this case make up a sort of sparse 3D map of the environment. However, the 3D model-based approaches regularly depend on auxiliary distance sensors like stereo [8] and trinocular [10] cameras. An alternative to the Cartesian 3D models is to use an appearance-based approach [22]. Appearance-based localization, in its simplest form, involves taking raw snapshots at various locations and storing them along with positioning information. The current camera image can then subsequently be matched against these memorized images to find the most probable current location. お願いします＾＾；
As we alluded to earlier, Perl is also a mathematical language. This is true at several levels, from low-level bitwise logical operations, up through number and set manipulation, on up to larger predicates and abstractions of various sorgs. And as we all know from studying math in school, mathematicians love strange symbols.
特にThis is true...からの文が、上手く訳せませんorz
318 名前：317 mailto:sage [2006/07/03(月) 23:47:02 ]
しかも間違ってるorz × abstractions of various sorgs. ○ abstractions of various sorts.
Needless to say,it is impossible to predict with any precision the degree of success that we will have in dealing with the above challenges in the near future. However,one thing is certain:even if we can deal successfully with these issues and related problems, new problems will arise. It has always been the case that the problems one generation has been able to solve lead to difficulties that another must face, and this, without question, will not change.
言うまでもない事だが、 近い未来に行うだろう上記のチャレンジが成功する度合いは、 どんな精度ででも予言する事は不可能である。 しかしながら、１つだけ確かな事がある。 それは、これらの問題や関連する問題が解決したとしても、 新しい問題が発生するだろうということだ。 It has always been the case that the problems one generation has been able to solve ← この部分がよく分からん。It って何を指してるんだろ。前の何か？ それとも that 以下？ lead to difficulties that another must face, そしてこのことは、疑うまでもなく、これからも変わらないだろう。
If one messenger or pathway is blocked _____ is likely to take its place as the body tries to protect itself against starvation． (A)another (B)the other (C)other (D)others 当てはめて訳すやつなんですが｢体を飢餓から守ろうとして…｣くらいの部分的な訳しかわかりませんorz 助けてください…('A`)
Visual Studio .NET includes a number of additional windows that you might find useful on occasion. You can display each of these windows by choosing Other Windows from the View menu and selectiong the window you want Visual Studio .NET to show.
>>344>>345 同じ本のはしがきより ActiveX, Authenticode, .(中略), Win32, Windows, Windows NT and Xbox are either registered trademarks ortrademarks of Microsoft Corporation in the United States and/or other countries. Other product and company names mentioned herein may be the trademarks of their respective owners .
As a results of the trilateral trade of slaves-raw cotton-cotton textiles and the trade between the West Coast of Africa and South America, a large black population moved to South and North America.
どなたかお答えいただければ・・・ 原文： Transparent color cannot be specified from the application’s color setting method. It is only limited to the case when the transparent GIF images are utilized with regard to the use of transparent color in the i-mode Java application environment.
Although the working conditions were brutal, Catheline never contemplated complaining or switching to another employer. "This was known as a job you had to do to 'get your ticket punched,'" she explained. Little wonder she wanted it punched: this was still the 1980s, when a management job at IBM was the pot of gold at the end of many a white-collar rainbow, thanks to the company's longtime domination of the mainframe computer business, unflaggingly powerful stock performance, and well-earned reputation as a blue-chip provider of employee benefits and incentives.
