Raspberry Camera API - Revision history

Jca: /* Format check */

2022-01-04T13:49:24Z

Format check

@@ Line 55: / Line 55: @@
          [1]: 'pBAA' (10-bit Bayer BGBG/GRGR Packed)
          [2]: 'BG10' (10-bit Bayer BGBG/GRGR)
 But formats can be converted to other formats, visible as other video devices e.g /dev/video12.

Jca: /* Raspicam - old version of operating system (OLD) */

2021-12-25T11:46:16Z

Raspicam - old version of operating system (OLD)

← Older revision		Revision as of 13:46, 25 December 2021
Line 78:		Line 78:
	I didn't succeed in using the converted formats, maybe because they are based on the BA81 format.		I didn't succeed in using the converted formats, maybe because they are based on the BA81 format.
	Format 'BG10' works for both cameras and is easily converted to RGB format using OpenCV (https://docs.opencv.org/3.4/db/d64/tutorial_js_colorspaces.html).		Format 'BG10' works for both cameras and is easily converted to RGB format using OpenCV (https://docs.opencv.org/3.4/db/d64/tutorial_js_colorspaces.html).

	~~==Raspicam - old version of operating system (OLD) ==~~

	~~NB! old info - rest of page <===================================~~

	~~To be used from C++ direct or through openCV.~~

	~~A rather short raspberry pi camera API is available from https://www.uco.es/investiga/grupos/ava/node/40.~~

	~~And can be downloaded from https://sourceforge.net/projects/raspicam/files/,~~

	~~or get the file from sourceforge with no GUI, with (there may be newer versions):~~

	~~cd ~/Downloads~~
	wget --no-check-certificate -O raspicam-0.1.9.zip https://downloads.sourceforge.net/project/raspicam/raspicam-0.1.9.zip?r=https%3A%2F%2Fsourceforge.net%2Fprojects%2Fraspicam%2F%3Fsource%3Dtyp_redirect&ts=1486483484&use_mirror=netix

	~~Once fetched and available on the raspberry, then~~
	~~Unpack and install:~~
	~~unzip raspicam-0.1.9.zip~~
	~~cd raspicam-0.1.9~~
	~~mkdir build~~
	~~cd build~~
	~~cmake ..~~
	~~make -j3~~
	~~sudo make install~~
	~~sudo ldconfig~~

	~~The library is installed in /usr/local, and therefore to make cmake find it the path needs to be added to startup configuration, in file ~/.bashrc~~

	cd
	~~nano ~/.bashrc~~
	~~add at the end:~~
	~~export CMAKE_PREFIX_PATH=/usr/local/lib~~
	~~source ~/.bashrc # to implement export~~

	~~Test with openCV~~
	~~raspicam_cv_test~~
	~~That takes 100 images and saves 3.~~

	~~=== Camera streamer ===~~


	~~To download the project you will need a source control system called git. It may not be installed on a fresh image. I know it’s not on the lite image. So you may need to install it.~~
	~~sudo apt-get install git~~

	~~Now that you have git installed, use it to clone a copy of the mjpg-streamer to your Pi.~~

	~~git clone https://github.com/jacksonliam/mjpg-streamer.git~~

	~~After the cloned copy of the mjpeg-stream has been coppied to the raspberry-pi, follow these steps.~~

	~~cd mjpg-streamer/mjpg-streamer-experimental/~~
	~~make -j4 # optional CMAKE_BUILD_TYPE=Debug~~
	~~sudo make install~~

	~~Make a script to start the streamer~~

	cd
	~~nano start-stream.sh~~

	~~copy this into the file (uncomment only one line - the others are examples for other resolutions - edit as desired)~~

	~~#!/bin/bash~~
	~~#mjpg_streamer -i "input_raspicam.so -y 1600 -x 1200 -fps 5 -rot 90" -o output_http.so~~
	~~mjpg_streamer -i "input_raspicam.so -y 972 -x 1296 -fps 3 -rot=0" -o output_http.so~~
	~~#mjpg_streamer -i "input_raspicam.so -y 600 -x 800 -fps 3 -rot=0" -o output_http.so~~
	~~#mjpg_streamer -i "input_raspicam.so -y 640 -x 480 -fps 5" -o output_http.so~~

	~~Change the file to be executable~~

	~~chmod +x start-stream.sh~~

	~~=== Start streaming at boot ===~~

	~~Start of applications can be controlled by the /etc/rc.local script:~~

	~~nano /etc/rc.local~~

	~~add the following lines before 'exit 0' (close to the end)~~

	~~# start camera streaming~~
	~~su - local /home/local/start-stream.sh &~~

	~~Copy and 'shift-ctrl-v' will do~~

	~~Comment the last line (su - local /home/local/start-stream.sh &) if camera streaming should not start.~~

	~~to stop streaming use (if started)~~

	~~pkill mjpg_streamer~~


	~~=== Watch camera stream ===~~

	~~When the robot is on a net connection - cable or wifi - you can watch the stream from a browser~~

	~~for streaming:~~
	~~HTTP://jasmin.local:8080/?action=stream~~
	~~or for a snapshot~~
	~~HTTP://jasmin.local:8080/?action=snapshot~~
	~~where jasmin should be replaced with the robot name, or jasmin.local can be replaced with the IP address.~~

Jca: /* Format check */

2021-12-24T11:58:16Z

Format check

← Older revision		Revision as of 13:58, 24 December 2021
Line 42:		Line 42:
	=== Format check ===		=== Format check ===

	Install package v4l-utils		Install package v4l-utils (also installed by default)

	sudo apt install v4l-utils		sudo apt install v4l-utils

Jca: /* Raspicam - old version of operating system (OLD) */

2021-12-24T09:08:50Z

Raspicam - old version of operating system (OLD)

← Older revision		Revision as of 11:08, 24 December 2021
Line 81:		Line 81:
	==Raspicam - old version of operating system (OLD) ==		==Raspicam - old version of operating system (OLD) ==

	NB! old info - rest of page		NB! old info - rest of page <===================================

	To be used from C++ direct or through openCV.		To be used from C++ direct or through openCV.

Jca: /* Camera streamer (NOT) */

2021-12-24T09:08:25Z

Camera streamer (NOT)

← Older revision		Revision as of 11:08, 24 December 2021
Line 117:		Line 117:
	That takes 100 images and saves 3.		That takes 100 images and saves 3.

	=== Camera streamer ~~(NOT)~~ ===		=== Camera streamer ===

	~~NB! not to be used in "bullseye" (2021 and forward) - use libcamera as explained above.~~

	To download the project you will need a source control system called git. It may not be installed on a fresh image. I know it’s not on the lite image. So you may need to install it.		To download the project you will need a source control system called git. It may not be installed on a fresh image. I know it’s not on the lite image. So you may need to install it.

Jca: /* Camera streamer */

2021-12-24T09:07:59Z

Camera streamer

← Older revision		Revision as of 11:07, 24 December 2021
Line 117:		Line 117:
	That takes 100 images and saves 3.		That takes 100 images and saves 3.

	=== Camera streamer ===		=== Camera streamer (NOT) ===

			NB! not to be used in "bullseye" (2021 and forward) - use libcamera as explained above.

	To download the project you will need a source control system called git. It may not be installed on a fresh image. I know it’s not on the lite image. So you may need to install it.		To download the project you will need a source control system called git. It may not be installed on a fresh image. I know it’s not on the lite image. So you may need to install it.

Jca: /* Format check */

2021-12-16T15:43:46Z

Format check

← Older revision		Revision as of 17:43, 16 December 2021
Line 77:		Line 77:
	Format BA81 did not give a proper result for both cameras.		Format BA81 did not give a proper result for both cameras.
	I didn't succeed in using the converted formats, maybe because they are based on the BA81 format.		I didn't succeed in using the converted formats, maybe because they are based on the BA81 format.
	Format 'BG10' works for both cameras, and is easily converted to RGB format using OpenCV.		Format 'BG10' works for both cameras and is easily converted to RGB format using OpenCV (https://docs.opencv.org/3.4/db/d64/tutorial_js_colorspaces.html).

	==Raspicam - old version of operating system (OLD) ==		==Raspicam - old version of operating system (OLD) ==

Jca: /* Format check */

2021-12-16T15:42:04Z

Format check

← Older revision		Revision as of 17:42, 16 December 2021
Line 56:		Line 56:
	[2]: 'BG10' (10-bit Bayer BGBG/GRGR)		[2]: 'BG10' (10-bit Bayer BGBG/GRGR)

	But formats ~~are~~ converted to other formats, ~~when~~ other video devices ~~are used,~~ e.g /dev/video12.		But formats can be converted to other formats, visible as other video devices e.g /dev/video12.

	v4l2-ctl -d/dev/video12 --list-formats		v4l2-ctl -d/dev/video12 --list-formats
Line 74:		Line 74:
	[10]: 'NV12' (Y/CbCr 4:2:0)		[10]: 'NV12' (Y/CbCr 4:2:0)
	[11]: 'NV21' (Y/CrCb 4:2:0)		[11]: 'NV21' (Y/CrCb 4:2:0)

			Format BA81 did not give a proper result for both cameras.
			I didn't succeed in using the converted formats, maybe because they are based on the BA81 format.
			Format 'BG10' works for both cameras, and is easily converted to RGB format using OpenCV.

	==Raspicam - old version of operating system (OLD) ==		==Raspicam - old version of operating system (OLD) ==

Jca: /* camera from OpenCV */

2021-12-16T15:35:49Z

camera from OpenCV

← Older revision		Revision as of 17:35, 16 December 2021
Line 59:		Line 59:

	v4l2-ctl -d/dev/video12 --list-formats		v4l2-ctl -d/dev/video12 --list-formats

	ioctl: VIDIOC_ENUM_FMT		ioctl: VIDIOC_ENUM_FMT
	Type: Video Capture Multiplanar		Type: Video Capture Multiplanar
Line 73:		Line 74:
	[10]: 'NV12' (Y/CbCr 4:2:0)		[10]: 'NV12' (Y/CbCr 4:2:0)
	[11]: 'NV21' (Y/CrCb 4:2:0)		[11]: 'NV21' (Y/CrCb 4:2:0)


	==Raspicam - old version of operating system (OLD) ==		==Raspicam - old version of operating system (OLD) ==

Jca at 14:26, 16 December 2021

2021-12-16T14:26:35Z

@@ Line 38: / Line 38: @@
 == camera from OpenCV ==
-@todo
+The raspberry cameras seem to prefer 10 bit/pixel in Bayer RGGB format - other formats are not consistent for both new and old camera.
-==Raspicam - old version of operating system ==
+=== Format check ===
 NB! old info - rest of page