Guoxin's VFX Blog
Just another myblog.arts site

Month: December 2022

Categories
Maya

Week 10: Rander

I rendered out my figures to put into AE. To match the background and the rain, I paid attention to the colour tones and lighting in order to make the figure and the background less abrupt. the back of the figure is dark and there is a light from the front, in terms of colour, I lowered the saturation of the figure a bit to match the background better, the background is cool I also cooled the colour of the skin a bit.

I have learnt a lot this term, especially in optimizing my work, which requires not only good models but also attention to all the details.

Categories
Nuke

Week 9:2D Clean up

Rotopaint(pressing P on Node Graph)

For clean up and clone

When drawing your shapes, you can:

  1. Click in the Viewer to place points. You can drag while clicking to pull out Bezier handles or adjust B-Spline tension.
  2. Ctrl/Cmd+drag to sketch the shape freely.
  3. Click the first point or press Return to close the shape. To leave the shape open, press Esc.
  4. Ctrl/Cmd+Alt+click to add points to an existing shape.
  5. Select a point and press Z to increase the smoothness of the point.
  6. Select the point and press Shift+Z to cusp the point.
  7. Select the point and press Delete to delete a point.
  8. Beziers: Shift+drag on a tangent handle to snap the opposite handle to the same length. Ctrl/Cmd+drag on a tangent handle to move it independently of its opposite handle.
  9. B-Splines: Ctrl/Cmd+Alt+drag on a point to adjust its tension.

Erode (filter)

Filters input pixels relative to the size control, and is particularly useful with mattes. Negative values cause brighter areas to expand into darker areas and positive values cause darker areas to expand into lighter areas. Use the filter dropdown to control the erode computation speed (box) versus quality (gaussian).

Erode (filter) is similar to Erode (fast), but can be computationally more expensive because you can select the filter type to improve the erode quality.

FrameHold

Lets you either:

  • pick one frame and use that frame at every frame of the input clip, or • use every certain number of frames of the input clip (for example, every fifth frame).

Grain

The Grain node lets you add synthetic grain (rather than grain derived from actual film stock) to an image. This helps you ensure that all of the elements in your composite, including those which were digitally generated, look like they were shot on the same film stock.

The presets dropdown menu includes predefined types of grain, such as Kodak 5248 and Kodak 5218. These are the correct size for 2K scans.

You can also adjust the Grain node’s controls to match a sample piece of grain:

  1. Find a sample with a rather constant background.
  2. Blur the sample to remove the grain.
  3. Connect the blurred sample to the Grain node’s input.
  4. In the Viewer, wipe between the Grain node and the original sample image, and adjust the Grain node’s controls to match the grain. It helps to view and match each of the red, green, and blue channels separately.
Categories
Design for Animation

Week 7:Group Tutorial Sessions

Through the discussion in this session I have a clearer direction of about my research

I would like to document the development of my report.

From a broad concept at the beginning to a figurative one, I was interested in ecological laws of nature and digital plants and I wanted to investigate how digital plants could have a perceptual or emotional impact on people. My topic was how to represent digital plants in film and how plants appear in the VFX visual space.

In the process of investigating abstract concepts such as digital plants and the laws of nature

I have read some materials：
THE EFFECT OF SEASONAL CHANGE OF PLANTS COMPOSITIONS ON VISUAL PERCEPTIO

Site by:Eroğlu, E., Müderrisoğlu, H. and Kesim, G. A. (2012) “The effect of seasonal change of plants compositions on visual perception”, Journal of Environmental Engineering and Landscape Management, 20(3), pp. 196-205. doi: 10.3846/16486897.2011.646007.

I am confused because I didn’t know how to progress and I don’t have a rigorous structure. In discussions with my classmates and my teacher, I realised that what I wanted to study was actually the symbolism of plants in animation or film, a subject that goes back to a more interesting topic for me, namely metaphor and symbolism.

Nigel recommended a book to me which is Understanding animation by Paul wells and a chapter dedicated to metaphor and symbolism, the chapter provides two case studies and here are my extracts from the book which I found very useful.

‘Metaphor essentially grows out of symbolism and serves to embody a system or ideas in a more appealing or conducive image system.’

‘Symbol and metaphor still render narrative as open-ended, though, because their deployment enables multiple discourses which may, at any point, contradict or support dominant readings.’

Categories
Maya

Week 9:Understanding rigs

In this lesson, we animated facial expressions based on the video reference, which was a bit difficult for me, and I needed to add more details to the expressions on the model, such as the wrinkles that show up when you are angry. I also needed to add more expressions, pay attention to the shape of the mouth and coordinate of facial expressions.