UM:Dvo Effects Dvo Stereo Fix
DVO Stereo Fix is an advanced stereo enhancement tool designed to resolve colour matching and geometry alignment issues with stereo sequences. The tool can address problem areas when they appear over the entire image frame (global correction) or in different areas inside a frame (local correction).
The tool will be able to correct most problems automatically but where this is not possible, controls are available that allow straightforward manual correction.
Enabling Stereo Work
Some basic setup is required to use the DVO Stereo Fix tool.
Project
Your project should be enabled for Stereoscopic Output :
Composition
You should have Multi-track Grading enabled inside the project :
Adding the Tool
DVO Stereo Fix must be added as an Input FX tool :
Overview
The tool has the following basic control layout, with the two primary tool areas being :
• | Colour matching controls |
• | Alignment (geometry) controls |
View Controls
Mute
Mutes both the colour match and the align match, as well as any associated border/blanking modes.
The parameters in this section regarding view and orientation remain active i.e. SwapEyes/ViewMode/Mirror/Flip.
Swap Eyes
Swaps left and right eye on output.
All parameters referring to either left or right are associated with the source left and right tracks. As such, the actual processing is not affected by swapping eyes on the output.
View Mode
Values : |
Normal , Blended , Side-By-Side |
Default : |
Normal |
This control allows different view modes to be applied on the output and is used mainly for visualisation purposes.
Normal |
Separate left and right outputs. |
Blended |
Blends left and right image, which could be used to verify alignment processing. |
Side-By-Side |
Displays left and right images side-by-side with halved horizontal resolution.
If this mode is used to verify colour matching simultaneously, please note that many monitors might have colour reproduction which varies spatially or by viewing angle. |
Mirror Controls
The Mirror Controls will automatically determine and correct for a mirrored left or right eye. If required, manual correction can also be set here.
Auto Mirror
Values : |
Disable , Left , Right |
Default : |
Right |
Automatically determines mirror and flip between left and right eye. If we detect a requirement to mirror or flip, it is applied to the specified eye.
Mirror Left
Manually set left eye to be mirrored.
Mirror Right
Manually set right eye to be mirrored.
Flip Left
Manually set left eye to be flipped (vertically).
Flip Right
Manually set right eye to be flipped (vertically).
Colour Matching
These controls allow us to correct the colour match between the left and right eyes.
Colour Match
Values : |
to Left , to Right |
Default : |
to Left |
Sets colour processing to match the specified eye.
Scene Mode
Values : |
Disable , Uniform , Non-Uniform |
Default : |
Non-Uniform |
Sets the colour matching mode for a scene such that the scene is analysed and processed equally throughout (all frames). The different modes relate to how colour matching may vary spatially over the image.
Disable |
No colour match processing is performed (on scene basis). |
Uniform |
Colour matching is assumed to be spatially uniform. |
Non-Uniform |
Colour matching is allowed to be spatially non-uniform. This mode typically works just as well when the colour differences are spatially uniform. |
Scene Mode requires proper scene edits as normally one scene will behave very differently to another. |
Frame Mode
Values : |
Disable , Uniform , Non-Uniform |
Default : |
Disable |
Sets the colour matching mode which is applied per frame individually.
The processing and modes are the same as described above for Scene Mode.
This option can be used as an alternative to Scene Mode processing if it appears that colour differences change on a frame by frame basis. It is recommended that Scene Mode processing be Disabled when used. |
Local Mode
Values : |
Disable , Normal |
Default : |
Normal |
This option allows for more localised colour match processing than found in Scene or Frame Modes. The Area Size and Sensitivity controls are linked to Local Mode processing.
Area Size
Values : |
X-Small , Small , Medium , Large , X-Large |
Default : |
Medium |
The smaller the Area Size is the more locally aggressive it can be considered to be.
Sensitivity
Values : |
0 - 1023 |
Default : |
64 |
The Sensitivity parameter is used to control the allowed difference ranges. The values we set correspond to 10 bit levels. The effect of Sensitivity is as a safety measure rather than a processing amount.
Colour Match Safety
Values : |
0.0 - 1.0 |
Default : |
0.5 |
This parameter sets a general safety level for the Scene and Frame Mode colour matching.
Colour Match Safety applies to black levels as well as the analysis and variability of the spectrum transform applied.
Alignment
These controls allow us to correct the alignment (or geometry) between the left and right eyes.
Align Match
Values : |
to Left , to Right |
Default : |
to Left |
Sets alignment processing to match the specified eye.
Align Mode
Values : |
Disable , Manual , Global , Morph |
Default : |
Morph |
The alignment processing is based on scene analysis and frames are processed equally throughout the scene. The alignment can also be set manually or adjusted with a global offset (Manual V-Offset).
Disable |
No alignment processing. |
Manual |
Set manual global vertical offset (using Manual V-Offset). |
Global |
Automatic and global adjustment. |
Morph |
Spatially variable adjustment with linear variability over the image. |
Like Scene Mode colour matching, Align Mode requires proper scene edits as normally one scene will behave very differently to another. |
Manual V-Offset
Values : |
0 - 128 |
Default : |
0 |
Manual adjustment of the alignment.
Borders
The Borders controls let us correct any effect alignment has on frame borders.
Borders
Values : |
Disable , Blank , Zoom Source , Zoom Fill |
Default : |
Zoom Source |
Disable |
Disable border processing. |
Blank |
Automatically applies necessary blanking to borders. |
Zoom Source |
Automatically zooms the output to the source frame and original blanking. As per the Blanking Mode, this mode takes into account what needs to be excluded regarding the borders and alignment. |
Zoom Fill |
Automatically zooms the output to fill the full frame disregarding any original blanking of the source. |
Centre
Values : |
On , Off |
Default : |
On |
Centre the result in the frame. This may be necessary for some Border modes.
Blanking
Blanking is closely linked to the Borders control and allows us to control how the frame borders are blanked.
Blank Setup
Values : |
Auto , Source , Output |
Default : |
Auto |
Blank Setup lets us choose if blanking is setup by automatic analysis or manually in relation to the source or the output.
Auto |
Use automatic analysis to define the blanking amount. |
Source |
Allow manual blanking setup. |
Output |
Manually specify blanking completely based on the output alone. This requires you to regard frame effects from the alignment processing manually, as well as the original source frame blanking. This is an Advanced Mode. |
Blank Top / Left / Right / Bottom
Manual blanking adjustment to the top, left, right and bottom of the frame. Specified in pixels.