Image Analysis with CASA - ESO
Image Analysis with CASA - ESO
Image Analysis with CASA - ESO
- TAGS
- image
- analysis
- casa
- www.eso.org
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Smooth images<br />
imsmooth – <strong>Image</strong> convolution (<strong>with</strong> Gaussian or boxcar kernel)<br />
<strong>CASA</strong>> inp imsmooth<br />
# imsmooth :: Smooth an image or portion of an image<br />
imagename = 'my.image' # Name of the input image<br />
kernel = 'gauss' # Type of kernel to use: gaussian or boxcar.<br />
major = '2.5arcsec' # Major axis for the kernels, default direction is along yaxis.<br />
minor = '2.0arcsec' # Minor axis in gaussian and boxcar kernels<br />
pa = '0deg' # Position angle for gaussian kernel<br />
targetres = False # If gaussian kernel, specified parameters are to be<br />
# resolution of output image (True) or parameters of<br />
# gaussian to convolve <strong>with</strong> input image (False).<br />
2 2 2<br />
Convolution by Gaussian: Ө = Өimg_in + Өsmo<br />
img_out<br />
Ex: Smoothing <strong>with</strong> a Gaussian kernel 20'' by 10'', <strong>with</strong> position angle 45deg:<br />
<strong>CASA</strong>> imsmooth( imagename='my.image',<br />
kernel='gauss',<br />
major='20arcsec', minor='10arcsec', pa='45deg')<br />
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