def main():
""" Displayes the image file given as first parameter on the command line. """
if len(sys.argv) > 1:
fn = sys.argv[1]
print 'loading %s ...' % fn
img = TIFF(fn)
bit = img.depth
else:
print __doc__
print 'USAGE: %s [image filename]\n' % sys.argv[0]
sys.exit(1)
print("Minimum and maximum pixel values in the image: Min: %d Max: %d" % img.minmax)
print("Rescaling to fill full 16bit space.")
img.data = img.rescale()
# determine screen size (see http://stackoverflow.com/a/3949983/183995 )
root = Tkinter.Tk()
screen_width, screen_height = root.winfo_screenwidth(), root.winfo_screenheight()
small = img
while small.dimensions[0] > screen_height or small.dimensions[1] > screen_width:
small.scale_down_to_half()
def onmouse(event, x, y, flags, param):
h, w = img.dimensions
hs, ws = small.dimensions
x, y = int(1.0*x*h/hs), int(1.0*y*h/hs)
show_zoom(x,y)
zoom_window_size = 466
zoom_factor = 3
zoom = np.zeros((zoom_window_size, zoom_window_size),img.data.dtype)
def show_zoom(x,y):
h, w = img.dimensions
img_box = rectangle()
img_box.pos = coordinates(0,0)
img_box.dim = coordinates(w,h)
box = img_box.get_rectangle_inside(zoom_window_size/zoom_factor, coordinates(x,y))
f, t = box.corners()
#zoom = cv2.getRectSubPix(img, (800, 600), (x+0.5, y+0.5))
#cv2.GetSubRect(img, (60, 70, 32, 32))
#zoom = cv2.getRectSubPix(img, (200, 200), (x, y))
#zoom = img[f.y:t.y, f.x:t.x]
## http://docs.opencv.org/modules/imgproc/doc/geometric_transformations.html#resize
cv2.resize(img.data[f.y:t.y, f.x:t.x], dsize=(zoom_window_size,zoom_window_size), dst=zoom, interpolation=cv2.INTER_NEAREST)
cv2.imshow('Detail', zoom)
cv2.namedWindow("Detail")
cv2.moveWindow("Detail", 5, 50+small.dimensions[0])
cv2.imshow('Overview', small.data)
cv2.moveWindow("Overview", 5, 20)
show_zoom(0,0)
cv2.setMouseCallback('Overview', onmouse)
cv2.waitKey()
