User Manual

Inspector
Controls Tab
The Controls tab includes parameters for changing the resolution of the image. It uses a
multiplier of size to set the new resolution. An Edges menu allows you to determine how the
edges of the frame are handled if the scaling decreases.
Lock X/Y
When selected, only a Size control is shown, and changes to the image’s scale are applied to
both axes equally. If the checkbox is cleared, individual Size controls appear for both X
and Y Size.
Size
The Size control is used to set the scale used to adjust the resolution of the source image.
Avalue of 1.0 would have no affect on the image, while 2.0 would scale the image to twice its
current resolution. A value of 0.5 would halve the image’s resolution.
Only Use Filter in HiQ
The Scale node will normally use the fast Nearest Neighbor filter for any non-HiQ renders,
where speed is more important than full accuracy. Disable this checkbox to force Scale to
always use the selected filter for all renders.
Change Pixel Aspect
Enable this checkbox to reveal a Pixel Aspect control that can be used to change the image’s
pixel aspect.
Filter Method
When rescaling a pixel, surrounding pixels are often used to give a more realistic result. There
are various algorithms for combining these pixels, called filters. More complex filters can give
better results but are usually slower to calculate. The best filter for the job often depends on the
amount of scaling and on the contents of the image itself.
 Box: This is a simple interpolation resize of the image.
 Linear: This uses a simplistic filter, which produces relatively clean and fast results.
 Quadratic: This filter produces a nominal result. It offers a good compromise between
speed and quality.
 Cubic: This produces better results with continuous-tone images. If the images have
fine detail in them, the results may be blurrier than desired.
Chapter – 108 Transform Nodes 2455