def on_send_button_clicked(self, event):
if self.monitor is None:
img_data = self.painter.get_image_data()
#prepare an image
w, h, d = img_data.shape
img = Image.fromstring( "RGBA", ( w ,h ), img_data.tostring() )
img_gs = img.convert('L')
# thumbnail_size = (28, 28)
# img_gs.thumbnail(thumbnail_size)
img_gs_inv = ImageOps.invert(img_gs)
else:
img_data = self.monitor.get_image_data()
# img_gs_inv = 255 - img_data
img_gs_inv = img_data
img_gs_inv_thumbnail, bound_rect = utils.get_char_img_thumbnail_helper(np.asarray(img_gs_inv))
# img.show()
self.img_data = np.asarray(img_gs_inv_thumbnail).flatten().astype(np.float32) * 1./255.
if self.on_send_usr_callback is not None:
self.on_send_usr_callback(self)
#update the target canvas
self.ax_target.imshow(self.img_data.reshape((28, 28)))
self.target_canvas.draw()
return
def on_send_incomplete_button_clicked(self, event):
if self.monitor is None:
img_data = self.painter.get_image_data()
else:
img_data = self.monitor.get_image_data()
#prepare an image
w, h, d = img_data.shape
img = Image.fromstring( "RGBA", ( w ,h ), img_data.tostring() )
img_gs = img.convert('L')
# thumbnail_size = (28, 28)
# img_gs.thumbnail(thumbnail_size)
img_gs_inv = ImageOps.invert(img_gs)
img_gs_inv_thumbnail, bound_rect = utils.get_char_img_thumbnail_helper(np.asarray(img_gs_inv))
# img.show()
self.img_data = np.asarray(img_gs_inv_thumbnail).flatten().astype(np.float32) * 1./255.
#cover a fraction of the image to produce incomplete data
self.fraction_idx = (np.random.rand(2) > 0.5).astype(int)
self.img_incomplete_data = self.img_data.reshape((28, 28))
self.img_incomplete_data[14*self.fraction_idx[0]:14*(self.fraction_idx[0]+1), 14*self.fraction_idx[1]:14*(self.fraction_idx[1]+1)] = 0
self.img_incomplete_data = self.img_incomplete_data.flatten()
if self.on_send_incomplete_usr_callback is not None:
self.on_send_incomplete_usr_callback(self)
#update the target canvas
self.ax_target.imshow(self.img_data.reshape((28, 28)))
self.target_canvas.draw()
return
def main(record=True):
if record:
img_reader = CameraImageReader(camera_idx=0)
#print information
# img_reader.print_cap_info()
#wait until enter to capture an image
raw_input('ENTER to capture an image...')
img = img_reader.capture_image()
cv2.imshow("capture", img)
cv2.waitKey()
timestr = time.strftime("%Y%m%d-%H%M%S")
cv2.imwrite(os.path.join('img_reader', timestr+'.png'),img)
else:
curr_dir = os.path.dirname(os.path.realpath(__file__))
fdir = os.path.join(curr_dir, 'img_reader')
fname = '20160808-131404.png'
#load the colored image in grayscale
img = cv2.imread(os.path.join(fdir, fname), cv2.IMREAD_GRAYSCALE)
cv2.imshow("file", img)
cv2.waitKey()
img_processor = ImageLetterProcessor(img=img)
img_processed = img_processor.binarize_img()
img_processed = img_processor.localize_img()
img_processed = np.array(img_processed, dtype=np.uint8)
img_gs_inv_thumbnail, bound_rect = utils.get_char_img_thumbnail_helper(np.asarray(img_processed))
cv2.imshow("processed", img_gs_inv_thumbnail)
cv2.waitKey()
return