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#!/usr/bin/env python
import os
from argaze.AreaOfInterest import AOIFeatures
import numpy
import cv2
def main():
window_name = 'Heatmap'
frame_size = (800, 600)
aoi = AOIFeatures.AreaOfInterest([[0, 0], [1, 0], [1, 1], [0, 1]])
aoi_frame = AOIFeatures.AOIFrame(aoi, frame_size)
gaze_spread_sum = numpy.zeros((frame_size[1], frame_size[0]))
heatmap_matrix = numpy.zeros((frame_size[1], frame_size[0]), dtype=numpy.uint8)
cv2.namedWindow(window_name, cv2.WINDOW_AUTOSIZE)
# Update pointer position
def on_mouse_event(event, x, y, flags, param):
nonlocal gaze_spread_sum
nonlocal heatmap_matrix
gaze_spread = aoi_frame.point_spread((x, y), sigma=0.05)
gaze_spread_sum += gaze_spread
heatmap_gray = (255 * gaze_spread_sum / numpy.max(gaze_spread_sum)).astype(numpy.uint8)
heatmap_matrix = cv2.applyColorMap(heatmap_gray, cv2.COLORMAP_JET)
# Attach mouse callback to window
cv2.setMouseCallback(window_name, on_mouse_event)
while True:
cv2.imshow(window_name, heatmap_matrix)
# Stop calibration by pressing 'Esc' key
if cv2.waitKey(10) == 27:
current_directory = os.path.dirname(os.path.abspath(__file__))
cv2.imwrite(os.path.join(current_directory,'heatmap.png'), heatmap_matrix)
break
# Stop frame display
cv2.destroyAllWindows()
if __name__ == '__main__':
main()
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