Northern Eclipse Help Reference

 MeshWarp


This function is used to generate a series of images that slowly change an image according to vectors defined on the image.

This function works on the current image.  It looks for vectors (using the Vector Tool) indicating how the image should be warped.  It then creates intermediate images according to “# of Steps” and mesh warps the source. 

   

Sampling Method

An image only has data at its integer locations.  This function generates non-integer pixel locations.  Eclipse can compensate for this by using a sampling method to determine the data at the non-integer locations.  

Bi-Cubic – This method looks at the 16 pixels surrounding the non-integer point of interest and forms a continuous bi-cubic surface.  It then samples this surface at the non-integer point and uses this as a value.  (see Bi-Cubic).  This method does the most processing and generally looks the best but it also deviates the most from the original image data.

Bi-Linear – This method looks at the 4 pixels surrounding the non-integer point of interest and forms a continuous bi-linear plane.  It then samples this plane at the non-integer point and uses this as a value.  (see Bi-Linear).  This method is a compromise between Bi-Cubic and truncation.  It still generates data not found in the original image but not to the extent as Bi-Cubic and it is also faster.

Truncation – This method discards the non-integer portion of the point and treats it as an integer point.  This method has the advantage of using data values that exist in the image and it is the fastest.  Its disadvantage is that it has the worst visual appearance.


See Also

Morph, Rotate, Vector Tool

References

Table of Contents
Function Reference
Menu Reference
Toolbar Reference