Aktivni stereo vid
| Autor: | DELALIĆ, ELVEDIN |
|---|---|
| Přispěvatelé: | Perš, Janez |
| Jazyk: | slovinština |
| Rok vydání: | 2015 |
| Předmět: |
pattern projection
stereo kalibracija Gray coding črtni vzorec tridimenzijsko merjenje stereo calibration rekonstrukcija površine Grayevo kodiranje active stereo vision surface reconstruction aktivni stereo vid naključni vzorec random pattern stripe pattern three-dimensional measurement projiciranje vzorcev |
| Popis: | V magistrski nalogi je predstavljena izvedba sistema aktivnega stereo vida ter njegovo vrednotenje. Aktivni stereo vid je metoda pridobivanja tridimenzionalne informacije o opazovanih objektih brez teksture. Sistem sestavljajo kamere, ponavadi par kamer, in svetilo, s katerim lahko upravljamo. Zato je bil namen izvedbe preveriti, ali lahko z uporabo dveh sivinskih kamer in projektorja, ki so bili na voljo, uspešno zaznavamo in rekonstruiramo površino objektov. Opravili smo pregled področja in se odločili preizkusiti tri tehnike ustvarjanja teksture na objektu z Grayevim kodiranjem, naključnim vzorcem in linijskim premikom snopov svetlobe. Njihovo delovanje smo analizirali s kvantitativnimi in kvalitativnimi eksperimenti. Na osnovi analize lahko zaključimo, da izbira materiala objekta najmanj vpliva na delovanje tehnike z Grayevim kodiranjem. Površine s spremenljivo globino predstavljajo problem tehniki z naključnim vzorcem, nasprotno pa na takšnih objektih s tehniko z linijskim premikom zelo dobro poiščemo korespondenčna območja. Zaradi dolgotrajnosti in nekonsistence te tehnike in omejitev pri naključnem vzorcu lahko rečemo, da z Grayevim kodiranjem dobimo najbolj vsestransko delovanje. This thesis presents the construction of active stereo vision system and its evaluation. Active stereo vision is a method of obtaining three-dimensional information about observed textureless objects. System consists of cameras, usually a pair, and a light source that can be manipulated. Therefore the aim was to test, if we could use two monochrome cameras and a projector, which were available, to successfully detect and reconstruct the surface of objects. Overview of the field was done and we decided to test three techniques Gray coding, random pattern and line shift of light beams. Their performance was analyzed by means of quantitative and qualitative experiments. Based on analysis we can conclude that the choice of object material has little affect on the operation of technique with Gray coding. Surfaces with variable depths are problematic for random pattern technique, by contrast technique with line shift can find corresponding areas on those objects very well. Because line shift technique is time-consuming and inconsistent and random pattern technique has its limitations, we can conclude that the performance of Gray coding is the most versatile. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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