Python TestImage.addEllipseRandom 예제들

예제 #1

파일: powers_qs.py 프로젝트: rhiannonlynne/powerspectrum

def elliptical():
    """Generate a test image with random ellipses and background noise."""
    im = TestImage(shift=True, nx=1000, ny=1000)
    im.addEllipseRandom(nEllipse=100, value=5)
    im.addNoise(sigma=1)
    im.hanningFilter()
    #im.zeroPad()
    im.calcAll(min_npix=2, min_dr=1)
    im.plotMore()
    pylab.savefig('elliptical.%s' %(figformat), format='%s' %(figformat))
    # Invert from ACovF 1d without phases                                             
    im.invertAcovf1d()
    im.invertAcovf2d(useI=True)
    im.invertPsd2d(useI=True)
    im.invertFft(useI=True)
    im.showImageAndImageI()
    pylab.savefig('elliptical_invert.%s' %(figformat), format='%s' %(figformat))
    pylab.close()
    return

예제 #2

파일: test.py 프로젝트: rhiannonlynne/powerspectrum

im.hanningFilter()
im.zeroPad()
im.calcAll()
im.plotAll(title='Ring')

# ellipses, grid
im = TestImage()
im.addEllipseGrid(gridX=80, gridY=80, semiX=20., semiY=40., angle=45.)
im.hanningFilter()
im.zeroPad()
im.calcAll()
im.plotAll(title='Ellipse, grid')

# ellipses, random locations
im = TestImage()
im.addEllipseRandom(value=5)
im.hanningFilter()
im.zeroPad()
im.calcAll()
im.plotAll(title='Ellipse, random')

# ellipses, random locations, with noise
#im = TestImage()
#im.addEllipseRandom(value=5)
im.addNoise()
#im.zeroPad()
im.calcAll()
im.plotAll(title='Ellipse, random, with noise')

pylab.show()