log_imagelog_imageLogImageLogImagelog_image (Operator)

Name

log_imagelog_imageLogImageLogImagelog_image — Calculate the logarithm of an image.

Signature

log_image(Image : LogImage : Base : )

Description

log_imagelog_imageLogImageLogImagelog_image calculates the logarithm to the base BaseBaseBasebaseValbase of an input image ImageImageImageimageimage and stores the result in the image LogImageLogImageLogImagelogImagelog_image. If ImageImageImageimageimage contains gray values outside the valid domain of the logarithm function, i.e., , the corresponding gray values in LogImageLogImageLogImagelogImagelog_image are set to 0.

Attention

log_imagelog_imageLogImageLogImagelog_image can be executed on an OpenCL device for byte, int1, int2, uint2, int4, and real images. Note that the results of the OpenCL code may vary from the results produced by the CPU.

Execution Information

Supports OpenCL compute devices.
Multithreading type: reentrant (runs in parallel with non-exclusive operators).
Multithreading scope: global (may be called from any thread).
Automatically parallelized on tuple level.
Automatically parallelized on channel level.
Automatically parallelized on domain level.

Parameters

ImageImageImageimageimage (input_object) (multichannel-)image(-array) → object (byte* / int1* / uint2* / int2* / int4* / int8 / real*) *allowed for compute devices

Input image.

LogImageLogImageLogImagelogImagelog_image (output_object) (multichannel-)image(-array) → object (real)

Output image.

BaseBaseBasebaseValbase (input_control) number → (string / integer / real)

Base of the logarithm.

Default: 'e' "e" "e" "e" "e"

Suggested values: 'e'"e""e""e""e", 2, 10

Module

Foundation

Operators