WOLFRAM

Legacy Documentation

Digital Image Processing (2000)

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ImageThread

The length of each supplied argument must match the number of color channels in img.
The argument img is an ImageData expression.
See also User's Guide 2.4.

Examples

This loads the package.
In[1]:=
Here we read a color test image.
In[2]:=
ImageThread permits the threading of arguments over the channels of a color image. It is possible, therefore, to apply a different threshold to each of the color channels. Here we effectively remove the green and blue channels. (Note that the following example is for demonstration purposes only, since the Threshold command automatically threads lists of threshold values across color channels.)
In[3]:=
Out[3]//InputForm=Out[3]//InputForm=
In[4]:=
Out[4]=Out[4]=
The following demonstrates how to apply a different filter to each of the color channels of img.
In[5]:=
In[6]:=
Out[6]=Out[6]=