psetsubband

Synopsis

Description

psetsubvband inserts a subband to a DWT image at the specified scale. The subband im_in2 is an image and it is added to the input DWT image im_in1. At each scale, image are numbered as follows:

    [1][2]
    [3][4]

• 1: subband LL of approximate coefficients.
• 2: subband LH of detail coefficients.
• 3: subband HL of detail coefficients.
• 4: subband HH of detail coefficients.

Parameters

• scale specifies the scale analysis of the DWT image.
• subband specifies the number of the subband [1..4] to be inserted at the specified scale.

Inputs

• im_in1: a 2D grayscale image of DWT.
• im_in2: a 2D image with the convenient size.

Inputs

• im_out: an image of the same type as the input image im_in1.

Result

Returns SUCCESS or FAILURE.

Examples

Threshold the LL of the DWT analysis of a square:

   pshapedesign 256 256 0 2 150 150 a.pan
   pqmf daubechies 4 b.pan
   pdwt 1 a.pan b.pan c.pan
   pgetsubband 1 1 c.pan d.pan
   pthresholding 20 400 d.pan e.pan
   psetsubband 1 1 c.pan e.pan f.pan
   pidwt 1 f.pan b.pan out.pan

See also

C++ prototype

Version française

Insertion d'une sous-bande dans une image de DWT.