Enable manual exposure and its adjustment function¶
Using the SetOptionValue() function of the API, you can set various control values for the current open device.
To enabling manual exposure, set Option::EXPOSURE_MODE to 1.
For mynteye s1030, during manual exposure, the settings available for adjustment are:
Option::GAINGain.Option::BRIGHTNESSBrightness (Exposure time).Option::CONTRASTContrast (Black level calibration).
For mynteye s21XX, during manual exposure, the settings available for adjustment are:
Option::BRIGHTNESSBrightness (Exposure time).
Reference Code:
s1030：
auto &&api = API::Create(argc, argv);
// manual-exposure: 1
api->SetOptionValue(Option::EXPOSURE_MODE, 1);
// gain: range [0,48], default 24
api->SetOptionValue(Option::GAIN, 24);
// brightness/exposure_time: range [0,240], default 120
api->SetOptionValue(Option::BRIGHTNESS, 120);
// contrast/black_level_calibration: range [0,254], default 116
api->SetOptionValue(Option::CONTRAST, 116);
LOG(INFO) << "Enable manual-exposure";
LOG(INFO) << "Set GAIN to " << api->GetOptionValue(Option::GAIN);
LOG(INFO) << "Set BRIGHTNESS to " << api->GetOptionValue(Option::BRIGHTNESS);
LOG(INFO) << "Set CONTRAST to " << api->GetOptionValue(Option::CONTRAST);
s21XX：
auto &&api = API::Create(argc, argv);
bool ok;
auto &&request = api->SelectStreamRequest(&ok);
if (!ok) return 1;
api->ConfigStreamRequest(request);
// manual-exposure: 1
api->SetOptionValue(Option::EXPOSURE_MODE, 1);
// brightness/exposure_time: range [1,255], default 70
api->SetOptionValue(Option::BRIGHTNESS, 70);
LOG(INFO) << "Enable manual-exposure";
LOG(INFO) << "Set EXPOSURE_MODE to "
<< api->GetOptionValue(Option::EXPOSURE_MODE);
LOG(INFO) << "Set BRIGHTNESS to "
<< api->GetOptionValue(Option::BRIGHTNESS);
Reference running results on Linux:
s1030：
$ ./samples/_output/bin/ctrl_manual_exposure
I0513 14:09:17.104431 31908 utils.cc:26] Detecting MYNT EYE devices
I0513 14:09:17.501519 31908 utils.cc:33] MYNT EYE devices:
I0513 14:09:17.501551 31908 utils.cc:37] index: 0, name: MYNT-EYE-S1000
I0513 14:09:17.501562 31908 utils.cc:43] Only one MYNT EYE device, select index: 0
I0513 14:09:17.552918 31908 manual_exposure.cc:37] Enable manual-exposure
I0513 14:09:17.552953 31908 manual_exposure.cc:38] Set GAIN to 24
I0513 14:09:17.552958 31908 manual_exposure.cc:39] Set BRIGHTNESS to 120
I0513 14:09:17.552963 31908 manual_exposure.cc:40] Set CONTRAST to 116
s21XX：
$ ./samples/_output/bin/ctrl_manual_exposure
I/utils.cc:30 Detecting MYNT EYE devices
I/utils.cc:40 MYNT EYE devices:
I/utils.cc:43 index: 0, name: MYNT-EYE-S210A, sn: 07C41A190009071F
I/utils.cc:51 Only one MYNT EYE device, select index: 0
I/utils.cc:79 MYNT EYE devices:
I/utils.cc:82 index: 0, request: width: 1280, height: 400, format: Format::BGR888, fps: 10
I/utils.cc:82 index: 1, request: width: 1280, height: 400, format: Format::BGR888, fps: 20
I/utils.cc:82 index: 2, request: width: 1280, height: 400, format: Format::BGR888, fps: 30
I/utils.cc:82 index: 3, request: width: 1280, height: 400, format: Format::BGR888, fps: 60
I/utils.cc:82 index: 4, request: width: 2560, height: 800, format: Format::BGR888, fps: 10
I/utils.cc:82 index: 5, request: width: 2560, height: 800, format: Format::BGR888, fps: 20
I/utils.cc:82 index: 6, request: width: 2560, height: 800, format: Format::BGR888, fps: 30
I/utils.cc:93 There are 7 stream requests, select index:
3
I/manual_exposure.cc:62 Enable manual-exposure
I/manual_exposure.cc:63 Set EXPOSURE_MODE to 1
I/manual_exposure.cc:65 Set BRIGHTNESS to 70
The sample program displays an image with a real exposure time in the upper left corner, in milliseconds.
Complete code samples，see ctrl_manual_exposure.cc .