picamera2

一些树莓派摄像头的使用记录

from picamera2 import Picamera2, Preview

import time

  

# 创建 Picamera2 对象

picam2 = Picamera2()

  

# 配置摄像头

config = picam2.create_preview_configuration(main={"size": (640, 480)})

picam2.configure(config)

  

# 启动摄像头预览

picam2.start_preview(Preview.QTGL)

picam2.start()

  

print("Press Ctrl+C to stop the preview...")

  

try:

    # 保持预览运行直到手动终止程序

    while True:

        time.sleep(1)  # 使用 sleep 代替 pass，以减少 CPU 占用

except KeyboardInterrupt:

    # 捕捉到 Ctrl+C 中断信号后停止预览

    picam2.stop_preview()

    picam2.close()

    print("Preview stopped.")

except Exception as e:

    # 捕捉其他可能的错误

    picam2.close()

    print(f"An error occurred: {e}")

libcamera-hello --list-cameras

camera_config = {
    "sensor": {
        #"mode": picam2.sensor_modes[0],  
        #"bit_depth": 10,    
    },
    "size":(1920, 1080),
    "colour_space": ColorSpace.Sycc(),
    "transform":Transform(hflip=1),
    "main":{
    "size":(1920, 1080),
    #"colour_space":"YUV420"
    "format":"YUV420",
    "preserve_ar": False
    },
    "lores": {
        "size": (640, 480),  
       # "colour_space": "YUV420"
         "format":"YUV420",
         "preserve_ar": False
    },
    "raw": {
        "size": (2592, 1944),
        "format":"SRGGB10_CSI2P",
        "preserve_ar": False
    },
    "buffer_count" :4,
    "display": "main",
    "encode": "main",
    "queue": True,
    "controls": {}
}

sudo python camera.py
[48:59:36.316547742] [13251]  INFO Camera camera_manager.cpp:325 libcamera v0.3.2+27-7330f29b
[48:59:36.324132147] [13254]  INFO RPI pisp.cpp:695 libpisp version v1.0.7 28196ed6edcf 29-08-2024 (16:33:32)
[48:59:36.333884797] [13254]  INFO RPI pisp.cpp:1154 Registered camera /base/axi/pcie@120000/rp1/i2c@88000/ov5647@36 to CFE device /dev/media2 and ISP device /dev/media0 using PiSP variant BCM2712_C0
[48:59:36.337044211] [13251]  INFO Camera camera.cpp:1197 configuring streams: (0) 1920x1080-YUV420 (1) 640x480-YUV420 (2) 2592x1944-BGGR_PISP_COMP1
[48:59:36.337168397] [13254]  INFO RPI pisp.cpp:1450 Sensor: /base/axi/pcie@120000/rp1/i2c@88000/ov5647@36 - Selected sensor format: 2592x1944-SBGGR10_1X10 - Selected CFE format: 2592x1944-PC1B

sudo python test.py
[48:30:38.435514653] [12879]  INFO Camera camera_manager.cpp:325 libcamera v0.3.2+27-7330f29b
[48:30:38.442934505] [12882]  INFO RPI pisp.cpp:695 libpisp version v1.0.7 28196ed6edcf 29-08-2024 (16:33:32)
[48:30:38.452247621] [12882]  INFO RPI pisp.cpp:1154 Registered camera /base/axi/pcie@120000/rp1/i2c@88000/ov5647@36 to CFE device /dev/media2 and ISP device /dev/media0 using PiSP variant BCM2712_C0
[48:30:38.455445944] [12879]  INFO Camera camera.cpp:1197 configuring streams: (0) 640x480-XBGR8888 (1) 640x480-GBRG_PISP_COMP1
[48:30:38.455559426] [12882]  INFO RPI pisp.cpp:1450 Sensor: /base/axi/pcie@120000/rp1/i2c@88000/ov5647@36 - Selected sensor format: 640x480-SGBRG10_1X10 - Selected CFE format: 640x480-PC1g
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
error: XDG_RUNTIME_DIR is invalid or not set in the environment.