近距鏡頭 的英文怎麼說
中文拼音 [jìnjùjìngtóu]
近距鏡頭
英文
close-ulens-
In the application of mini - micro - robot visual perception, there is a need for fish - eye lenses for capturing wide field of view for navigation. though fish - eye lenses provide a wide field of view ( 180 ), they introduce significant distortion in images and the acquired images are quite warped, which makes conventional camera calibration algorithms no longer work well. this paper presents an accurate calibration framework for fish - eye lens ( a high distortion lens ) camera stereo vision system. the accurate calibration model is formulated with radial distortion, decentering distortion and thin prism distortion based on the fisheye deformation model. using fish - eye and non - linear camera model, the author employs levenberg - marquardt method to realize precise non - linear calibration for wide - view - scene dense depth image recovery
魚眼鏡頭成像立體視覺系統在微小型機器人視覺導航和近距離大視場物體識別與定位中有著廣泛的應用.盡管魚眼鏡頭攝像機具有很大的視場角（接近180 ） ，但同時也引入嚴重的圖像變形，常規的攝像機標定方法無法使用.該文提出一種標定魚眼鏡頭攝像機立體視覺系統的方法.在魚眼鏡頭變形模型的基礎上，通過考慮魚眼鏡頭成像的徑向變形、偏心變形和薄棱鏡變形，建立了魚眼鏡頭成像的精確成像模型，然後，利用非線性迭代演算法，精確求解攝像機外部參數、內部參數.實驗表明，使用該方法得到的立體視覺系統參數滿足精確恢復大場景稠密深度圖的要求" close - up performance of the summicron - m is on the same level as the performance at infinity setting ( actually infinity is that distance where the incoming light rays are parallel to the optical axis
近攝表現與無窮遠時相當（事實上，無窮遠處的光線是平行光軸入射的.對多數鏡頭而言，大約100倍焦距的物距時，入射光滿足這一條件）Thirdly, check the zoom function. with a good quality zoom lens, you can take better photos of landscapes and outdoor scenes
要檢查鏡頭的光學變焦功能.這個功能將影響您拍攝距離的遠近
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