BLENDER COMPOSITING - SATURATION AND CONTRAST IMPROVING VIDEO (THEME: BEACH RESORT)
Dr. Eng. Tihomir Dovramadjiev Technical University of Varna MTF, Department Industrial Design
[email protected]
About Blender Compositing - Introduction Introduction Compositing Nodes allow you to assemble and enhance an image (or movie). Using composition nodes, you can glue two pieces of footage together and colorize the whole sequence all at once. You can enhance the colors of a single image or an entire movie clip in a static manner or in a dynamic way that changes over time (as the clip progresses). In this way, you use composition nodes to both assemble video clips together and enhance them. Getting Started Access the Node Editor and enable Composite Nodes by clicking on the Image icon. To activate nodes for compositing, click the Use Nodes checkbox (see Properties). Examples You can change the mood of an image: - To make an image ‘feel’ colder, a blue tinge is added. - To convey a flashback or memory, the image may be softened. - To convey hatred and frustration, add a red tinge or enhance the red. - A startling event may be sharpened and contrast-enhanced. - A happy feeling – you guessed it – add yellow (equal parts red and green, no blue) for bright and sunny. - Dust and airborne dirt are often added as a cloud texture over the image to give a little more realism. Image Size So each node in a composite can operate on different sized images as defined by its inputs. Only the Composite output node has a fixed size, as defined by the settings in Properties Editor Render ‣ Dimensions.
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About Blender Compositing – Save image / video Saving your Composite Image The Render button renders a single frame or image. Save your image using Image ‣ Save Image or F3. The image will be saved using the image format settings on the Render panel. To save a sequence of images, for example, if you input a movie clip or used a Time node with each frame in its own file, use the Animation button and its settings. If you might want to later overlay them, be sure to use an image format that supports an Alpha channel (such as PNG). If you might want to later arrange them front to back or create a depth of field effect, use a format that supports a Z-depth channel (such as EXR). To save a composition as a movie clip (all frames in a single file), use an AVI or Quicktime format, and use the Animation button and its settings.
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About Blender Compositing – Properties Header
Use Nodes Enables basic compositing set up with a Render Layer Node and a Composite Node. Backdrop Enables the use of a backdrop using a Viewer Node. Backdrop Channels Auto Render Re-render and composite changed layer when edits to the 3D scene are made. Backdrop Reference: Panel: Properties region ‣ Backdrop Backdrop Channels Set the image to be displayed with Color, Color and Alpha, or just Alpha. Zoom Sets how big the backdrop image is. Offset Change the screen space position of the backdrop, or click the Move button, or shortcut Alt-MMB to manually move it. Fit Automatically scales the backdrop to fit the size of the Node editor 2018
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Processing Tutorial
Fig. 1. Blender software – Default interface 2018
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Compositing interface
Fig. 2. Blender software – Compositing interface 2018
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Activating “Use Nodes” + “Auto Render”
Fig. 3. Activating “Use Nodes” + “Auto Render”and deleting “Render Layers” 2018
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Activating “Movie clip” Node
Fig. 4. Adding “Movie clip”Node. Add > Input > Movie Clip 2018
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Opening Original Video File “Beach Resort”
Fig. 5. Opening original video file: 735343608.mp4. https://videos.pexels.com/videos/beach-resort-854152 2018
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Nodes Connection + Render Preview
Fig. 6. Handy connection “Movie clip” Node / Image to “Composite” Node / Image + Render 2018
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Adding “RGB Curves” Node
Fig. 7. Adding “RGB Curves” Node. Add > Color > RGB Curves 2018
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Adding “RGB Curves”Node
Fig. 8. Handy connection “Movie clip” Node / Image to “RGB Curves” Node / Image to “Composite” Node / Image 2018
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Original Video Frame
Fig. 9. “Beach Resort”. Original video frame 2018
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Working with “RGB Curves” Node
Fig. 10. Working with “RGB Curves” Node 2018
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Render Preview
Fig. 11. Render Preview 2018
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Activating “Color Correction” Node
Fig. 12. Activating “Color Correction” Node. Add > Color > Color Correction 2018
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Activating “Color Correction” Node
Fig. 13. Handy connection “RGB Curves” Node / Image to “Color Correction” Node / Image to “Composite” Node / Image 2018
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“Color Correction” Node – Saturation & Contrast
Fig. 14. Working with “Color Correction” Node. Saturation / Master: 1.3, Contrast/ Master: 1.1 2018
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Render Preview
Fig. 15. Render Preview 2018
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Render Options
Fig. 16. Render Options. Resolution: X: 1920 px Y: 1080 px; 100%; Frame Range: SF: 1, EF: 280, Frame Size: 1. 2018
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Output Video File
Fig. 17. Output Video File: AVI Raw 2018
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Generating Video
Fig. 18. Generating Video. Render: Render Animation 2018
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Final Result
Fig. 19. Final Result: Improving Beach Resort Video with Blender Compositing Saturation and Contrast. https://www.youtube.com/watch?v=jvy11Jjh9Tg 2018
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Resources Blender software https://www.blender.org/ Blender Compositing » Introduction https://docs.blender.org/manual/en/dev/compositing/introduction.html Blender Compositing » Properties https://docs.blender.org/manual/en/dev/compositing/properties.html Blender Material Nodes https://docs.blender.org/manual/en/dev/render/blender_render/materials/nodes/index.html Pexels - Free high quality photos. Creative Commons Zero (CC0) license. https://www.pexels.com/ Beach Resort https://videos.pexels.com/videos/beach-resort-854152
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