pow_image — Raise an image to a power.
pow_image raises the gray values of the input image Image to the power Exponent and stores the result in the image PowImage. If Image contains gray values that would overflow the range of PowImage, e.g., > 7131.55017 for Exponent = 10, the corresponding gray values in PowImage are set to the largest value representable in PowImage (i.e., 3.4028235*10^38). If Image contains gray values that cannot be raised to the power Exponent, i.e., if the gray values are negative and Exponent is not an integer, the corresponding gray values in PowImage are set to 0.
pow_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.
Power to which the gray values are raised.
Default value: 2
Suggested values: 0.25, 0.5, 2, 3, 4
sqrt_image, exp_image, log_image