About PEXELSvideos license Pexels Videos offers completely free videos. All videos are licensed under the Creative Commons Zero (CC0) license. This means you can edit or change the videos and use them free for personal and even for commercial projects. All without asking for permission or setting a link to the source. So that attribution is not required. With our swiftly growing database of videos, you are guaranteed to find the perfect footage for your website header, product promotion, or anything else. Every video we have available is free for any purpose - including commercial. This guarantees that you will be saving the hundreds of dollars better spent promoting your brand. The CC0 license was released by the non-profit organization Creative Commons (CC). You can find more information about the license on the official license page. https://videos.pexels.com/video-license Original Video - Footage Of A Tiger Yawning Link: https://videos.pexels.com/videos/footage-of-a-tiger-yawning-855576 Final result: https://www.youtube.com/watch?v=b8tEQkqbKR4&t=6s

1. Blender - Node Editor - Improve
video
Theme “Tiger”
Dr. Eng. Tihomir Dovramadjiev
Technical University of Varna
MTF
Department Industrial Design
tihomir.dovramadjiev@tu-varna.bg
DOI10.13140/RG.2.2.35261.15841

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The results: fresh colors & lights
(a) (b)
Fig. 1. Video of the “Tiger” theme (a) original video (b) final result

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Original Video - Footage Of A Tiger Yawning
● Link: https://videos.pexels.com/videos/footage-of-a-tiger-yawning-855576
● About PEXELSvideos license
Pexels Videos offers completely free videos. All videos are licensed under the Creative
Commons Zero (CC0) license. This means you can edit or change the videos and use them
free for personal and even for commercial projects. All without asking for permission or
setting a link to the source. So that attribution is not required. With our swiftly growing
database of videos, you are guaranteed to find the perfect footage for your website header,
product promotion, or anything else. Every video we have available is free for any purpose -
including commercial. This guarantees that you will be saving the hundreds of dollars better
spent promoting your brand.
The CC0 license was released by the non-profit organization Creative Commons (CC). You
can find more information about the license on the official license page.
https://videos.pexels.com/video-license

4. 2018 DrTAD 4
Blender Node Editor
● The Node Editor is used to work with node-based work flows. The node tree
type can be changed using the buttons in the Node editor header.
https://docs.blender.org/manual/en/dev/editors/node_editor/introduction.html
Table 1. The Node Editor

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Header
● The Header contains various menus, buttons and options, partially based on the current node
tree type.
● View
This menu changes your view of the editor.
● Select
This menu allows you to select a node or groups of nodes.
● Add
This menu allows you to add nodes.
● Node
To do things with selected nodes, akin to vertices.

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Header
● Material, Compositing or Texture buttons
Nodes are grouped into three categories, to see the list see Node Tree Types.
● Use Nodes
Tells the render engine to use the node map in computing the material color or rendering the
final image, or not. If not, the map is ignored and the basic render of the material tabs or
scene is accomplished.
● Use Pinned
When enabled, the editor will retain the material or texture, even when the user selects a
different object. A node tree can then be edited independent of the object selection in the 3D
view.
● Go to Parent button
This button allows you go to parent node tree e.g. leaving a group.

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RGB Curves Node
● The RGB Curves Node allows color corrections for each color channel and
levels adjustments in the compositing context
● Inputs
● Factor
Controls the amount of influence the node exerts on
the output image.
● Image
Standard image input.
● Black Level
Defines the input color that is (linear) mapped to black.
● White Level
Defines the input color that is (linear) mapped to white
● Fig. 2. RGB Curves

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RGB Curves Node Properties
● Channel
Clicking on one of the channels displays the curve for each.
C (Combined RGB), R (Red), G (Green), B (Blue), L (Luminance)
● Curve
A Bézier curve that varies the input levels (x-axis) to produce an output level (y-axis). For the
curve controls see: Curve widget.
● Outputs
Image/ Standard image output.

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RGB Curves Node Examples
● Some variants of curves
(a) (b) (c) (d)
Fig. 3. Curves from left to right: 1. Lighten 2. Negative 3. Decrease
Contrast 4. Posterize.

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Editing
● Configuration
Fig. 4. Node Editor: from left to right Image to Image – Movie Clip /RGB
Curves/ Composite

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Save to AVI
● Resolution:
1920 x 1080 px /100%
● Frame Range:
1 (start) – 1000 (end)
● Frame Rate:
24 fps
● Final result (YouTube):
https://www.youtube.com/watch?v=b8tEQkqbKR4&t=6s

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Resourses
● PEXELSvideos
https://videos.pexels.com/
● Blender
https://www.blender.org/
● Blender Node Editor
https://docs.blender.org/manual/en/dev/editors/node_editor/index.html
● Blender RGB Curves Node
https://docs.blender.org/manual/en/dev/compositing/types/color/rgb_curves.
html?highlight=rgb%20curves