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-rw-r--r--apps/CameraITS/tests/scene1/test_black_white.py86
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diff --git a/apps/CameraITS/tests/scene1/test_black_white.py b/apps/CameraITS/tests/scene1/test_black_white.py
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--- a/apps/CameraITS/tests/scene1/test_black_white.py
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-# Copyright 2013 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import its.image
-import its.caps
-import its.device
-import its.objects
-import pylab
-import os.path
-import matplotlib
-import matplotlib.pyplot
-
-def main():
- """Test that the device will produce full black+white images.
- """
- NAME = os.path.basename(__file__).split(".")[0]
-
- r_means = []
- g_means = []
- b_means = []
-
- with its.device.ItsSession() as cam:
- props = cam.get_camera_properties()
- if not its.caps.manual_sensor(props):
- print "Test skipped"
- return
-
- expt_range = props['android.sensor.info.exposureTimeRange']
- sens_range = props['android.sensor.info.sensitivityRange']
-
- # Take a shot with very low ISO and exposure time. Expect it to
- # be black.
- print "Black shot: sens = %d, exp time = %.4fms" % (
- sens_range[0], expt_range[0]/1000000.0)
- req = its.objects.manual_capture_request(sens_range[0], expt_range[0])
- cap = cam.do_capture(req)
- img = its.image.convert_capture_to_rgb_image(cap)
- its.image.write_image(img, "%s_black.jpg" % (NAME))
- tile = its.image.get_image_patch(img, 0.45, 0.45, 0.1, 0.1)
- black_means = its.image.compute_image_means(tile)
- r_means.append(black_means[0])
- g_means.append(black_means[1])
- b_means.append(black_means[2])
- print "Dark pixel means:", black_means
-
- # Take a shot with very high ISO and exposure time. Expect it to
- # be white.
- print "White shot: sens = %d, exp time = %.2fms" % (
- sens_range[1], expt_range[1]/1000000.0)
- req = its.objects.manual_capture_request(sens_range[1], expt_range[1])
- cap = cam.do_capture(req)
- img = its.image.convert_capture_to_rgb_image(cap)
- its.image.write_image(img, "%s_white.jpg" % (NAME))
- tile = its.image.get_image_patch(img, 0.45, 0.45, 0.1, 0.1)
- white_means = its.image.compute_image_means(tile)
- r_means.append(white_means[0])
- g_means.append(white_means[1])
- b_means.append(white_means[2])
- print "Bright pixel means:", white_means
-
- # Draw a plot.
- pylab.plot([0,1], r_means, 'r')
- pylab.plot([0,1], g_means, 'g')
- pylab.plot([0,1], b_means, 'b')
- pylab.ylim([0,1])
- matplotlib.pyplot.savefig("%s_plot_means.png" % (NAME))
-
- for val in black_means:
- assert(val < 0.025)
- for val in white_means:
- assert(val > 0.975)
-
-if __name__ == '__main__':
- main()
-