WEBVTT 00:01.000 --> 00:05.000 In this video, I show how calibration works in the ARES project. 00:06.000 --> 00:09.000 I am using a monitor for reasons of better filmimg. 00:09.500 --> 00:13.000 However, the procedure is the same when using a video projector and screen. 00:14.000 --> 00:18.000 The symbol on the left shows that there is no camera available. 00:19.000 --> 00:23.000 That is why we are now putting the USB connector of the camera into the computer. 00:24.000 --> 00:29.000 The new symbol shows that a camera is available, but has not yet a calibration. 00:30.000 --> 00:35.000 The pulsing button shows that a calibration is available that can be loaded. 00:36.000 --> 00:40.000 We do not want to do that now, but to carry out a new calibration. 00:41.000 --> 00:46.000 To do this, we go into the options menu and start the calibration assistant. 00:47.000 --> 00:49.000 To begin with, we simply confirm the epilepsy warning. 00:50.000 --> 00:53.000 We now remove the filter from the camera. 00:54.000 --> 00:57.000 At the first step, we select a camera and its resolution. 00:58.000 --> 01:02.000 I only have one camera here, so I do not need this step. 01:03.000 --> 01:07.000 However, anyone who, for example, wants an external camera to be used instead of a laptops internal one, 01:07.000 --> 01:10.000 can choose between all available cameras. 01:11.000 --> 01:15.000 The resolution is less important than the highest possible framerate. 01:16.000 --> 01:19.000 If the framerate is significantly under 30 frames per second, 01:19.000 --> 01:22.000 it can help to select the smaller resolution. 01:23.000 --> 01:27.000 However, we will stick to the 640x480 preset. 01:28.000 --> 01:31.000 Since ARES averages the data of several pixels for hit detection, 01:31.000 --> 01:35.000 the resolution of the hit position is much higher than that of the camera. 01:36.000 --> 01:40.000 By clicking on the next button, we will advance to the camera alignment step. 01:41.000 --> 01:45.000 This must be done in such a way that the whole picture can be seen and is as centered as possible. 01:46.000 --> 01:50.000 Since ARES assigns the corners of the image to their position when it detects them, 01:50.000 --> 01:55.000 it must be ensured that all corners lie in the appropriate quadrants of the camera image. 01:56.000 --> 02:00.000 Therefore, for example, the top left corners must be in the top left area of the camera image. 02:01.000 --> 02:04.000 As with every step, the help text explains what is to be done here. 02:04.500 --> 02:06.000 It can be opened with the question mark button. 02:07.000 --> 02:09.000 When the alingment is done we proceed to the next step. 02:10.000 --> 02:13.000 ARES is now trying to find the corners itself. 02:14.000 --> 02:18.000 As we can see from the green frame, this worked perfectly in this case. 02:19.000 --> 02:22.000 However, if corners were not recognized or at a wrong position, 02:22.000 --> 02:26.000 you can correct them by clicking on the corresponding corner in the camera image. 02:27.000 --> 02:30.000 This way the calibration can also be fine-tuned in general. 02:31.000 --> 02:34.000 If the camera settings are completely put wrong, 02:34.000 --> 02:37.000 it can also come to useless pictures, as can be seen here. 02:38.000 --> 02:42.000 In this case, the settings have to be corrected first and then this step has to be repeated. 02:43.000 --> 02:46.000 The camera settings will be set in the next step. 02:47.000 --> 02:50.000 First the red filter is positioned in front of the camera. 02:51.000 --> 02:55.000 Here it is important not to change the now calibrated alignment. 02:56.000 --> 02:58.500 Therefore I fixed the camera in a vice 02:58.500 --> 03:01.000 to avoid any movement when installing the filter. 03:02.500 --> 03:05.500 Depending on the screen, beamer or light situation, 03:05.500 --> 03:08.000 it may also be possible to carry out the previous step with the red filter. 03:09.000 --> 03:13.000 Of course this is optimal, because the camera does not have to be touched anymore. 03:14.000 --> 03:18.000 In this step, the brightness and exposure time of the camera are set. 03:19.000 --> 03:22.500 The goal is that the entire image is very dark, but a laser dot 03:22.500 --> 03:26.000 that is shot at the image clearly emerges. 03:27.000 --> 03:30.000 It is also important that the frame rate is as high as possible. 03:31.000 --> 03:34.000 If the two sliders do not work, this is because 03:34.000 --> 03:37.000 the camera still has automatic settings activated. 03:38.000 --> 03:40.000 This cannot be switched off directly in ARES. 03:41.000 --> 03:45.000 Therefore you have to minimize ARES with the button and open the driver panel of the camera. 03:46.000 --> 03:49.000 This panel looks slightly different for each camera. 03:50.000 --> 03:52.000 We are looking for the settings for the automatic exposure 03:52.000 --> 03:55.000 and automatic white balance, and disable both. 03:56.000 --> 04:01.000 The changes are applied and ARES is maximized again by right-clicking inside the window. 04:01.500 --> 04:03.500 Press to next to the following step. 04:05.000 --> 04:10.000 ARES has now automatically analyzed the light situation and determined a threshold value for the laser detection. 04:11.000 --> 04:14.000 However, this value can be corrected manually using the slider. 04:15.000 --> 04:20.000 In order to find the optimal value, the laser pistol is used to shoot at different positions in the image. 04:21.000 --> 04:26.000 Each time, the bar representing the detected brightness must exceed the threshold value, 04:26.000 --> 04:30.000 which is additionally indicated by the text "Laser Detected". 04:31.000 --> 04:36.000 As long as there is no shooting, the bar must always be well below the threshold value. 04:37.000 --> 04:40.000 Once the threshold value has been set, the offset calibration is performed. 04:41.000 --> 04:45.000 Here an incorrectly aligned sighting of a laser pistol can be corrected. 04:46.000 --> 04:48.000 Therefore you shoot three times at the target. 04:49.000 --> 04:52.000 ARES calculates the center of the three hits and will use its distance 04:52.000 --> 04:55.000 to the target center as a correction value. 04:56.000 --> 04:58.000 However, better than this digital compensation 04:58.000 --> 05:01.000 is to adjust the laser or sight correctly. 05:02.000 --> 05:06.000 Using the Projekt ARES laser pistol, for example, this is achieved by adjusting the screws on the muzzle. 05:07.000 --> 05:11.000 If you do not want offset compensation, you can simply skip this step. 05:12.000 --> 05:15.000 Also if you finish a calibration procedure before the third shot, 05:15.000 --> 05:17.000 the Offest is set to zero. 05:18.000 --> 05:21.000 The last step serves to test the calibration. 05:22.000 --> 05:25.000 Here you can use laser pulses or a permanently shining laser beam, 05:25.000 --> 05:29.000 and see if and where it is recognized. 05:30.000 --> 05:34.000 If you are satisfied with the result, click Next to complete the calibration. 05:35.000 --> 05:39.000 Finally there is the possibility to save the calibration permanently. 05:40.000 --> 05:43.000 That's it and you can start playing now.