| # 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. |
| """Verifies YUV & JPEG image captures have similar brightness.""" |
| |
| |
| import logging |
| import os.path |
| import matplotlib |
| from matplotlib import pylab |
| from mobly import test_runner |
| |
| import its_base_test |
| import camera_properties_utils |
| import capture_request_utils |
| import image_processing_utils |
| import its_session_utils |
| import target_exposure_utils |
| |
| NAME = os.path.splitext(os.path.basename(__file__))[0] |
| PATCH_H = 0.1 # center 10% |
| PATCH_W = 0.1 |
| PATCH_X = 0.5 - PATCH_W/2 |
| PATCH_Y = 0.5 - PATCH_H/2 |
| THRESHOLD_MAX_RMS_DIFF = 0.03 |
| |
| |
| def do_capture_and_extract_rgb_means(req, cam, size, img_type, log_path, debug): |
| """Do capture and extra rgb_means of center patch. |
| |
| Args: |
| req: capture request |
| cam: camera object |
| size: [width, height] |
| img_type: string of 'yuv' or 'jpeg' |
| log_path: location for saving image |
| debug: boolean to flag saving captured images |
| |
| Returns: |
| center patch RGB means |
| """ |
| out_surface = {'width': size[0], 'height': size[1], 'format': img_type} |
| cap = cam.do_capture(req, out_surface) |
| if img_type == 'jpg': |
| assert cap['format'] == 'jpeg' |
| img = image_processing_utils.decompress_jpeg_to_rgb_image(cap['data']) |
| else: |
| assert cap['format'] == img_type |
| img = image_processing_utils.convert_capture_to_rgb_image(cap) |
| assert cap['width'] == size[0] |
| assert cap['height'] == size[1] |
| |
| if debug: |
| image_processing_utils.write_image(img, '%s_%s_w%d_h%d.jpg'%( |
| os.path.join(log_path, NAME), img_type, size[0], size[1])) |
| if img_type == 'jpg': |
| assert img.shape[0] == size[1] |
| assert img.shape[1] == size[0] |
| assert img.shape[2] == 3 |
| patch = image_processing_utils.get_image_patch( |
| img, PATCH_X, PATCH_Y, PATCH_W, PATCH_H) |
| rgb = image_processing_utils.compute_image_means(patch) |
| logging.debug('Captured %s %dx%d rgb = %s', |
| img_type, cap['width'], cap['height'], str(rgb)) |
| return rgb |
| |
| |
| class YuvJpegAllTest(its_base_test.ItsBaseTest): |
| """Test reported sizes & fmts for YUV & JPEG caps return similar images.""" |
| |
| def test_yuv_jpeg_all(self): |
| logging.debug('Starting %s', NAME) |
| with its_session_utils.ItsSession( |
| device_id=self.dut.serial, |
| camera_id=self.camera_id, |
| hidden_physical_id=self.hidden_physical_id) as cam: |
| props = cam.get_camera_properties() |
| props = cam.override_with_hidden_physical_camera_props(props) |
| camera_properties_utils.skip_unless( |
| camera_properties_utils.compute_target_exposure(props) and |
| camera_properties_utils.per_frame_control(props)) |
| log_path = self.log_path |
| debug = self.debug_mode |
| |
| # Load chart for scene |
| its_session_utils.load_scene( |
| cam, props, self.scene, self.tablet, self.chart_distance) |
| |
| # Use a manual request with a linear tonemap so that the YUV and JPEG |
| # should look the same (once converted by the image_processing_utils). |
| e, s = target_exposure_utils.get_target_exposure_combos( |
| log_path, cam)['midExposureTime'] |
| req = capture_request_utils.manual_capture_request(s, e, 0.0, True, props) |
| |
| rgbs = [] |
| for size in capture_request_utils.get_available_output_sizes( |
| 'yuv', props): |
| rgbs.append(do_capture_and_extract_rgb_means( |
| req, cam, size, 'yuv', log_path, debug)) |
| |
| for size in capture_request_utils.get_available_output_sizes( |
| 'jpg', props): |
| rgbs.append(do_capture_and_extract_rgb_means( |
| req, cam, size, 'jpg', log_path, debug)) |
| |
| # Plot means vs format |
| pylab.figure(NAME) |
| pylab.title(NAME) |
| pylab.plot(range(len(rgbs)), [r[0] for r in rgbs], '-ro') |
| pylab.plot(range(len(rgbs)), [g[1] for g in rgbs], '-go') |
| pylab.plot(range(len(rgbs)), [b[2] for b in rgbs], '-bo') |
| pylab.ylim([0, 1]) |
| pylab.xlabel('format number') |
| pylab.ylabel('RGB avg [0, 1]') |
| matplotlib.pyplot.savefig( |
| '%s_plot_means.png' % os.path.join(log_path, NAME)) |
| |
| # Assert all captured images are similar in RBG space |
| max_diff = 0 |
| for rgb_i in rgbs[1:]: |
| rms_diff = image_processing_utils.compute_image_rms_difference( |
| rgbs[0], rgb_i) # use first capture as reference |
| max_diff = max(max_diff, rms_diff) |
| msg = 'Max RMS difference: %.4f' % max_diff |
| logging.debug('%s', msg) |
| e_msg = msg + ' spec: %.3f' % THRESHOLD_MAX_RMS_DIFF |
| assert max_diff < THRESHOLD_MAX_RMS_DIFF, e_msg |
| |
| if __name__ == '__main__': |
| test_runner.main() |