WEBVTT 00:00.510 --> 00:00.780 No. 00:00.810 --> 00:04.680 We are sure that the camera is correctly enabled and that we can use it. 00:04.890 --> 00:10.980 So let's open funny by an E so we can write some python code. 00:11.370 --> 00:14.490 And let's start with this line. 00:19.220 --> 00:25.310 So we give the interpreter spike in three and then, well, there is a module, there is a Python module 00:25.310 --> 00:27.740 that is already installed on a Raspberry Pi voice. 00:28.190 --> 00:31.850 Then you're going to do from by camera. 00:32.000 --> 00:37.760 So this is the bite camera module and you're going to do so from by camera. 00:37.760 --> 00:45.440 All lowercase input by camera like this will be uppercase C uppercase. 00:45.830 --> 00:54.650 And then what we are going to do is we are going to create a camera from right camera like this with 00:54.650 --> 00:55.400 parentheses. 00:55.970 --> 01:02.900 And from that camera object here we will be able to take some photos and we can add some settings. 01:02.900 --> 01:10.880 For example, camera dot resolutions and it is a great input on setting and let's give, for example, 01:11.630 --> 01:17.360 1008 by 720. 01:17.900 --> 01:18.080 Okay. 01:18.080 --> 01:21.200 So this is an HD photo for the resolution. 01:21.200 --> 01:22.910 Make sure you give a tuple like this. 01:22.960 --> 01:24.140 Okay, parentheses. 01:24.560 --> 01:28.370 And then we need to choose where we want to save the photos actually. 01:28.700 --> 01:33.050 So in let's open phi manager here then. 01:33.050 --> 01:38.270 When we are in our own directory here, maybe we could create a camera folder. 01:38.600 --> 01:43.540 So instead of just creating the camera folder here, it's from the python call. 01:43.880 --> 01:56.450 So we are going to do import OS and then let's provide image folder name is equal to slash home slash 01:56.720 --> 01:57.170 by. 01:57.200 --> 02:01.100 Okay, this is where we are here and then slash camera. 02:02.210 --> 02:07.310 Then we're going to check if this folder doesn't exist, then we are going to create it. 02:07.310 --> 02:09.320 So if not voice. 02:10.740 --> 02:14.460 But baths don't exist. 02:15.000 --> 02:18.450 This is how to check that something exists. 02:19.570 --> 02:20.950 If it doesn't exist. 02:20.950 --> 02:30.500 We do voice notes and keep the I like in the terminal with the image folder. 02:31.990 --> 02:37.690 So if we run that, this is going to create a camera folder here the first time and then the second 02:37.690 --> 02:47.710 time is going to skip it because it already exists and then let's do it time that slick too. 02:48.190 --> 02:48.550 Okay. 02:48.700 --> 02:49.930 So why is that? 02:50.260 --> 02:53.260 Let's do first import time because we use time here. 02:53.890 --> 02:54.600 So why is that? 02:54.700 --> 02:59.870 Simply because the camera needs a bit of time to adjust to the luminosity. 02:59.890 --> 03:00.190 Okay. 03:00.430 --> 03:06.760 So if you want to have a correct picture, when you take a picture, make sure you wait at least, let's 03:06.760 --> 03:07.650 say two segments. 03:07.660 --> 03:07.960 Okay? 03:08.260 --> 03:14.170 So you create the camera, you set the settings, you create a folder, and you wait for 2 seconds and 03:14.170 --> 03:16.330 then you can take a photo. 03:16.690 --> 03:21.250 So in order to take your photo, we need to provide a file name. 03:21.280 --> 03:21.610 Okay. 03:21.940 --> 03:26.110 So let's do image file name is equal to. 03:26.290 --> 03:30.450 So let's use the image folder name and let's arg. 03:31.250 --> 03:35.200 So let's name each new image. 03:36.800 --> 03:37.120 Okay. 03:37.390 --> 03:42.990 We are going to use this extension and then you can do camera. 03:43.030 --> 03:50.200 So the camera we have created here, that capture image file name. 03:50.830 --> 03:53.410 Let's now run that code. 03:54.770 --> 03:58.520 So we see it as it's a test. 03:59.250 --> 04:06.230 Cameron Presenter And you can see now the program has grown. 04:06.650 --> 04:08.270 We have not printed anything. 04:09.200 --> 04:14.570 We could have printed some load here to say that we have actually taken a photo. 04:15.140 --> 04:19.460 And you can see here on this monument, we have a new fold of camera. 04:20.110 --> 04:26.090 I go on the camera folder and we have a new image and well, that's the current image. 04:26.090 --> 04:26.480 Not actually. 04:26.480 --> 04:27.550 It's quite dark in here. 04:27.560 --> 04:32.450 I'm going to turn on the light and let's take the photo again. 04:33.970 --> 04:34.330 Okay. 04:35.020 --> 04:36.670 So let's wait just 2 seconds. 04:36.670 --> 04:38.050 Maybe we can out of print here. 04:38.320 --> 04:38.770 Print. 04:40.000 --> 04:41.480 Take photo. 04:43.510 --> 04:43.960 Okay. 04:44.560 --> 04:45.550 So we can see. 04:47.660 --> 04:47.950 Okay. 04:48.140 --> 04:52.910 But take four so we know when we have the photo, let's just check the photo again. 04:52.910 --> 04:59.570 So you can see that's actually when you take a photo with the finding it's going to replace any other 04:59.570 --> 05:02.240 photo was taken before we the same thing here okay. 05:03.050 --> 05:05.330 And you can see whether that's a photo. 05:05.360 --> 05:10.400 And we have one problem here is that the photo is upside down. 05:10.910 --> 05:19.460 So what I'm going to do is I'm going to add a new sitting here, which is camera. 05:19.490 --> 05:24.410 That rotation is equal to 180 degrees. 05:24.650 --> 05:27.020 So this depends actually on the photo. 05:27.020 --> 05:31.940 You see that if you see the photo is upside down, then you can use this setting. 05:32.120 --> 05:36.980 And then if you change the position of the camera, you can just adjust this to make sure that you have 05:36.980 --> 05:37.890 a correct image. 05:37.910 --> 05:39.860 So let's do photo again. 05:42.230 --> 05:45.410 Take photo, and now the photo is correctly. 05:46.670 --> 05:47.390 Orientated. 05:48.260 --> 05:54.350 One thing I'm going to do also now is to test a difference of resolution because, well, when you take 05:54.350 --> 05:59.060 a photo with a big resolution like this, so this is not the biggest, but it's quite big. 05:59.450 --> 06:04.550 Then let's say here you see the file is 562 kilobytes. 06:04.790 --> 06:07.430 Okay, so 500 kilobytes. 06:07.940 --> 06:15.410 Now, let's take a photo with 640 and 480. 06:15.410 --> 06:17.030 So this is a lower resolution. 06:17.360 --> 06:19.610 Let's name it a new image, too. 06:19.910 --> 06:20.080 Okay. 06:20.090 --> 06:24.320 So we're going to have the image on the side and it's run again, the same photo. 06:26.320 --> 06:26.610 Okay. 06:26.620 --> 06:28.330 And let's check this image. 06:29.320 --> 06:29.620 Okay. 06:29.980 --> 06:33.220 The resolution is smaller, as you can see, but we still see clearing. 06:33.670 --> 06:36.130 And now the photo is just 200 kilobytes. 06:36.220 --> 06:38.050 So we have 500. 06:38.380 --> 06:41.140 And we went from 500 to 200 kilometres. 06:41.410 --> 06:48.850 And it is quite important because then when we take photo and we send photos to the Internet, it's 06:48.850 --> 06:55.060 better actually to try to have a size that is quite small so it goes faster and it doesn't take too 06:55.060 --> 06:55.780 much space. 06:56.140 --> 06:56.500 All right. 06:56.500 --> 06:59.290 And that's pretty much it from now for the camera. 06:59.590 --> 07:05.200 We are going to come back to it in the following practice activities and not so in the final project 07:05.200 --> 07:05.890 of the course.