Rendering entire image

[bsobhani]

If I run the following code,

from PIL import Image
import pyqtgraph as pg
import pyqtgraph.exporters
from PyQt5.QtWidgets import QApplication
import numpy as np
from scipy.ndimage import rotate


app = QApplication.instance()

image = Image.open("cameraman.png")

array = np.asarray(image)
im = pg.ImageView(view=pg.PlotItem())
im.show()
im.setImage(array)
im.getImageItem().rotate(30)

I get this image:

Since I rotated the image by 30 degrees, the corners in the above image were cut off. What I am trying to get is a numpy array of the entire image, with the corners in tact, but still rotated. I essentially want a numpy array of the image that I would get if I pressed the "view all" button. I also only want the image and not the xy axes or histogram, etc. Is there a way to access this?

[pijyoi]

You could rotate the image using ndimage.rotate()

import numpy as np
from scipy import ndimage, misc
import matplotlib.pyplot as plt
img = misc.ascent().astype(np.uint8)
out = ndimage.rotate(img, 30, reshape=True)
plt.imshow(out, cmap='gray')
plt.axis('off')
plt.show()

[j9ac9k]

@bsobhani if you just want the numpy matrix with the image rotated; then ndimage.rotate() is probably what you want as @pijyoi pointed out.

Rotating the image item won't give you the full numpy matrix; it just changes the orientation of the angle of the view within the plotting area.