Nuke 移除視頻上的物體教程cmiVFX - Nuke Object Removal Techniques
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本教程是由cmiVFX機構出品的Nuke遮罩對象去除技術高級教程。 NUKE是一個獲得學院獎(Academy Award)的數碼合成軟件。已經經過10年的歷練，為藝術家們提供了創造具有高質素的相片效果的圖像的方法。NUKE無需專門的硬件平臺，但卻能為藝術家提供組合和操作掃描的照片，視頻板以及計算機生成的圖像的靈活、有效、節約和全功能的工具。在數碼領域，NUKE已被用于近百部影片和數以百計的商業和音樂電視，NUKE具有先進的將最終視覺效果與電影電視的其余部分 無縫結合的能力，無論所需應用的視覺效果是什么風格或者有多復雜。 Nuke合成軟件參與制作的著名影視有：I, Robot 機械公敵、《極限特工》xXx、《泰坦尼克號》、T-2、《阿波羅13》、《真實的謊言》、《X戰警》等... cmiVFX Nuke Object Removal Techniques Discover how to integrate the creation of a clean patch to cover up the control box. Utilize the paint tool to clone the surrounding areas allowing the ability to conceal the box, while learning to project the result onto a plane in 3D space. Using 3D tracking data, match and integrate the patch to the general movement of the shot. 3D Geometry – Stabilizing 3D Footage: Film footage shot with a freely moving camera can be extremely difficult to work with and stabilize. Everything is shifting; nothing remains stable and there are very limited constant factors. Utilizing simple geometry and a projection camera, learn how to simplify this complex problem and create stabilization of the 3D footage. Time Offset: Parts of the train wheels were covered by the control box, which was previously removed, creating a problematic issue. The need to identify a quick solution or method to recover the wheels is crucial to continue the project. Painting the wheels in place would be a daunting and tedious task; the best solution is to copy the wheels from an area where they are not covered. The wheels now can appear on the patch before the train arrives and the time offset is the solution. Roto in 3D: Learn in detail how the 3D environment can help with rotoscoping. The film footage has been stabilized from the previous work and now being able to exploit that footage, the process of rotoscoping out the train wagon can be conducted on the stabilized shot. Removing Reflections: Streamlining the project is crucial and if there is way to use a simple solution for a complicated task, then do it! Painting out the reflection of the control box from the moving train wagons could take uncountable hours. Assuming the removal will not have to be perfect, the best solution would be to map out the shape of the reflection and color it to match the rest of the train, this method proves to be much more efficient. Additional Elements: Using the 3D environment can really be a bonus to any project. Simply lining up images behind one another in 3D space can create convincing parallax effects. The use of simple 3D geometry or FBX meshes can be of even more benefit. Receive a quick overview of how a window with a view into the room could be achieved by utilizing this technique. 
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