An OperationDescriptor describing the "Log" operation.
The "Log" operation takes the natural logarithm of the pixel
values of an image. The operation is done on a per-pixel, per-band
basis. For integral data types, the result will be rounded and
clamped as needed. The pixel values of the destination image are
defined as:
dst[x][y][b] = java.lang.Math.log(src[x][y][b])
For all integral data types, the log of 0 is set to 0. For
signed integral data types (short and int),
the log of a negative pixel value is set to -1.
For all floating point data types ((float and
double), the log of 0 is set to -Infinity,
and the log of a negative pixel value is set to NaN.
Resource List
| Name | Value |
|---|
| GlobalName | Log |
| LocalName | Log |
| Vendor | com.sun.media.jai |
| Description | Computes the natural logarithm of the pixel values
of an image. |
| DocURL | http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/LogDescriptor.html |
| Version | 1.0 |
No parameters are needed for the "Log" operation.
See Also: javax.media.jai.OperationDescriptor | 