7.39. Calibration Reader

此示例显示如何通过XLink读取存储在设备上的校准数据。

其他示例:

7.39.1. 设置

请运行 安装依赖脚本 以下载所有必需的依赖项。请注意,此脚本必须在git上下文中运行,因此您必须先下载 depthai-python 存储库,然后再运行该脚本:

git clone https://github.com/luxonis/depthai-python.git
cd depthai-python/examples
python3 install_requirements.py

7.39.2. 源代码

可以在 GitHub 上找到。国内用户也可以在 gitee 上找到。

#!/usr/bin/env python3

import depthai as dai
import numpy as np
import sys
from pathlib import Path

# Connect Device
with dai.Device() as device:
    calibFile = str((Path(__file__).parent / Path(f"calib_{device.getMxId()}.json")).resolve().absolute())
    if len(sys.argv) > 1:
        calibFile = sys.argv[1]

    calibData = device.readCalibration()
    calibData.eepromToJsonFile(calibFile)

    M_rgb, width, height = calibData.getDefaultIntrinsics(dai.CameraBoardSocket.RGB)
    print("RGB Camera Default intrinsics...")
    print(M_rgb)
    print(width)
    print(height)

    M_rgb, width, height = calibData.getDefaultIntrinsics(dai.CameraBoardSocket.RGB)

    M_left = np.array(calibData.getCameraIntrinsics(dai.CameraBoardSocket.LEFT, 1280, 720))
    print("LEFT Camera resized intrinsics...")
    print(M_left)

    D_left = np.array(calibData.getDistortionCoefficients(dai.CameraBoardSocket.LEFT))
    print("LEFT Distortion Coefficients...")
    [print(name+": "+value) for (name, value) in zip(["k1","k2","p1","p2","k3","k4","k5","k6","s1","s2","s3","s4","τx","τy"],[str(data) for data in D_left])]

    M_right = np.array(calibData.getCameraIntrinsics(dai.CameraBoardSocket.RIGHT, 1280, 720))
    print("RIGHT Camera resized intrinsics...")
    print(M_right)

    D_right = np.array(calibData.getDistortionCoefficients(dai.CameraBoardSocket.RIGHT))
    print("RIGHT Distortion Coefficients...")
    [print(name+": "+value) for (name, value) in zip(["k1","k2","p1","p2","k3","k4","k5","k6","s1","s2","s3","s4","τx","τy"],[str(data) for data in D_right])]

    print(f"RGB FOV {calibData.getFov(dai.CameraBoardSocket.RGB)}, Mono FOV {calibData.getFov(dai.CameraBoardSocket.LEFT)}")

    R1 = np.array(calibData.getStereoLeftRectificationRotation())
    R2 = np.array(calibData.getStereoRightRectificationRotation())
    M_right = np.array(calibData.getCameraIntrinsics(calibData.getStereoRightCameraId(), 1280, 720))

    H_left = np.matmul(np.matmul(M_right, R1), np.linalg.inv(M_left))
    print("LEFT Camera stereo rectification matrix...")
    print(H_left)

    H_right = np.matmul(np.matmul(M_right, R1), np.linalg.inv(M_right))
    print("RIGHT Camera stereo rectification matrix...")
    print(H_right)

    lr_extrinsics = np.array(calibData.getCameraExtrinsics(dai.CameraBoardSocket.LEFT, dai.CameraBoardSocket.RIGHT))
    print("Transformation matrix of where left Camera is W.R.T right Camera's optical center")
    print(lr_extrinsics)

    l_rgb_extrinsics = np.array(calibData.getCameraExtrinsics(dai.CameraBoardSocket.LEFT, dai.CameraBoardSocket.RGB))
    print("Transformation matrix of where left Camera is W.R.T RGB Camera's optical center")
    print(l_rgb_extrinsics)