Checking out thresholding
parent
4cc21ff804
commit
478a2e1c85
46
rfplot.py
46
rfplot.py
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@ -8,6 +8,10 @@ import matplotlib.dates as mdates
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from matplotlib.backend_bases import MouseButton
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from matplotlib.widgets import RectangleSelector
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import matplotlib as mpl
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from astropy.visualization import (ZScaleInterval, ImageNormalize,SqrtStretch)
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import imageio
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from skimage.morphology import binary_dilation, remove_small_objects
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mpl.rcParams['keymap.save'].remove('s')
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mpl.rcParams['keymap.fullscreen'].remove('f')
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@ -42,11 +46,43 @@ if __name__ == "__main__":
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def line_select_callback(eclick, erelease):
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x1, y1 = eclick.xdata, eclick.ydata
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x2, y2 = erelease.xdata, erelease.ydata
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array = mark.get_offsets()
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maskx = np.logical_and(array[:,0] >= min(x1,x2), array[:,0] <= max(x1,x2))
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masky = np.logical_and(array[:,1] >= min(y1,y2), array[:,1] <= max(y1,y2))
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mask = np.logical_and(maskx, masky)
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mark.set_offsets(array[np.logical_not(mask),:])
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t1_ind = round(len(s.t) * (x1 - tmin) / (tmax - tmin))
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t2_ind = round(len(s.t) * (x2 - tmin) / (tmax - tmin))
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f1_ind = round(len(s.freq) * (y1 - fmin) / (fmax - fmin))
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f2_ind = round(len(s.freq) * (y2 - fmin) / (fmax - fmin))
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submat = s.z[f1_ind:f2_ind,t1_ind:t2_ind]
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signal = submat - np.median(submat, axis=0)
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background = np.copy(signal)
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filter = np.ones(50)/50
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for i in range(signal.shape[1]):
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background[:,i] = np.convolve(signal[:,i], filter, mode="same")
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sig_without_background = signal - background
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mask = sig_without_background > 3 * np.std(sig_without_background, axis=0)
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sig_without_background[mask] = background[mask]
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sig_without_background[np.logical_not(mask)] = signal[np.logical_not(mask)]
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for i in range(signal.shape[1]):
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background[:,i] = np.convolve(sig_without_background[:,i], filter, mode="same")
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sig_without_background = signal - background
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mask = (sig_without_background > 3 * np.std(sig_without_background, axis=0)).astype(np.uint8)
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mask = binary_dilation(mask)
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remove_small_objects(mask, min_size=16, in_place=True)
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mask = np.flipud(mask)
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imageio.imwrite(f'test3.png', 255 * mask)
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print(s.z[f1_ind:f2_ind,t1_ind:t2_ind].shape)
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# array = mark.get_offsets()
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# maskx = np.logical_and(array[:,0] >= min(x1,x2), array[:,0] <= max(x1,x2))
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# masky = np.logical_and(array[:,1] >= min(y1,y2), array[:,1] <= max(y1,y2))
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# mask = np.logical_and(maskx, masky)
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# mark.set_offsets(array[np.logical_not(mask),:])
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fig.canvas.draw()
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print(f"select over {x1},{y1},{x2},{y2}")
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