bit_or ( Image1, Image2 : ImageOr : : )

Bit-by-bit OR of all pixels of the input images.

The operator bit_or calculates the "or" of all pixels of the input images bit by bit. The semantics of the "or" operation corresponds to that of C for the respective types (signed char, unsigned char, short, int/long). The images must have the same size and pixel type. The pixels within the definition range of the image in the first parameter are processed.

Several images can be processed in one call. In this case both input parameters contain the same number of images which are then processed in pairs. An output image is generated for every pair.


Parameters

Image1 (input_object)
image(-array) -> object : byte / int1 / int2 / int4
Input image 1

Image2 (input_object)
image(-array) -> object : byte / int1 / int2 / int4
Input image 2

ImageOr (output_object)
image(-array) -> object : byte / int1 / int2 / int4
Result of OR-operation


Example
read_image(:Image0:'affe':) >
disp_image(Image0:::) >
read_image(:Image1:'fabrik':) >
disp_image(Image1:::) >
bit_or(Image0,Image1:ImageBitO::) >
disp_image(ImageBitO:::).

Result

If the images are correct (type and number) the operator bit_or returns the value TRUE. The behavior in case of empty input (no input images available) is set via the operator set_system(::'no_object_result',<Result>:) If necessary an exception is raised.


Alternatives

bit_and, add__


See also

bit_xor, bit_and



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