CUDALink`
CUDALink`

CUDAImageSubtract

CUDAImageSubtract[img,x]

subtracts an amount x from each channel value in img.

CUDAImageSubtract[mem,x]

subtracts an amount x from each channel value in mem.

CUDAImageSubtract[img1,img2]

gives an image in which each pixel is the difference of the corresponding pixels in img1 and img2.

CUDAImageSubtract[mem1,mem2]

gives a CUDAMemory in which each pixel is the difference of the corresponding pixels in mem1 and mem2.

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  • The CUDALink application must be loaded using Needs["CUDALink`"].
  • CUDAImageSubtract works with binary, grayscale, and other images.
  • CUDAImageSubtract works with CUDAMemory and lists.
  • CUDAImageSubtract[image1,val] is equivalent to ImageSubtract[image1,val].
  • The image returned by CUDAImageSubtract[image,] has the same dimensions as image.
  • If image2 is a single-channel image, each channel of image1 is subtracted by image2 in CUDAImageSubtract[image1,image2].
  • In CUDAImageSubtract[image,x], the number x is normally in the range 0 to 1.
  • CUDAImageSubtract[image,x] gives an image with the same underlying data type as image, clipping or truncating values if necessary.
  • CUDAImageSubtract[image1,image2] gives an image with the type of image1, clipping or truncating values if necessary.
  • The following options can be given:
  • "Device"Automaticdevice used for CUDA computation
    "OutputMemory"NoneCUDAMemory where output is stored
  • 范例

    打开所有单元关闭所有单元

    基本范例  (3)

    First, load the CUDALink application:

    In[1]:=
    Click for copyable input

    This subtracts an image from another:

    In[2]:=
    Click for copyable input
    Out[2]=

    Subtracting a constant amount from each color channel darkens an image:

    In[1]:=
    Click for copyable input
    Out[1]=

    CUDAImageSubtract can be used to subtract rank 2 or 3 lists:

    In[1]:=
    Click for copyable input
    Out[1]//MatrixForm=

    Applications  (1)

    参见

    ImageSubtract  CUDAImageAdd  CUDAImageMultiply  CUDAImageDivide

    教程