增加SGBM算法测距，增加手识别算法，双目标定完成

.gitignore

@@ -2,3 +2,4 @@
 build/
 install/
 log/
+*.png

calibrationdata/left.yaml

@@ -0,0 +1,26 @@
+image_width: 640
+image_height: 480
+camera_name: left
+camera_matrix:
+  rows: 3
+  cols: 3
+  data: [468.55945,   0.     , 320.99324,
+           0.     , 468.7278 , 220.6343 ,
+           0.     ,   0.     ,   1.     ]
+distortion_model: plumb_bob
+distortion_coefficients:
+  rows: 1
+  cols: 5
+  data: [0.009422, -0.000327, -0.000980, -0.019506, 0.000000]
+rectification_matrix:
+  rows: 3
+  cols: 3
+  data: [ 0.99819422, -0.00430947, -0.0599143 ,
+          0.00540717,  0.99982027,  0.01817108,
+          0.05982523, -0.01846223,  0.99803812]
+projection_matrix:
+  rows: 3
+  cols: 4
+  data: [487.63246,   0.     , 338.03998,   0.     ,
+           0.     , 487.63246, 206.55779,   0.     ,
+           0.     ,   0.     ,   1.     ,   0.     ]

calibrationdata/ost.txt

@@ -0,0 +1,60 @@
+# oST version 5.0 parameters
+
+
+[image]
+
+width
+640
+
+height
+480
+
+[narrow_stereo/left]
+
+camera matrix
+468.559453 0.000000 320.993242
+0.000000 468.727800 220.634299
+0.000000 0.000000 1.000000
+
+distortion
+0.009422 -0.000327 -0.000980 -0.019506 0.000000
+
+rectification
+0.998194 -0.004309 -0.059914
+0.005407 0.999820 0.018171
+0.059825 -0.018462 0.998038
+
+projection
+487.632463 0.000000 338.039978 0.000000
+0.000000 487.632463 206.557787 0.000000
+0.000000 0.000000 1.000000 0.000000
+# oST version 5.0 parameters
+
+
+[image]
+
+width
+640
+
+height
+480
+
+[narrow_stereo/right]
+
+camera matrix
+469.733732 0.000000 320.579182
+0.000000 471.914916 200.728954
+0.000000 0.000000 1.000000
+
+distortion
+-0.022394 0.008106 -0.011521 -0.018003 0.000000
+
+rectification
+0.999423 -0.010289 -0.032380
+0.009694 0.999782 -0.018485
+0.032563 0.018160 0.999305
+
+projection
+487.632463 0.000000 338.039978 -41.780241
+0.000000 487.632463 206.557787 0.000000
+0.000000 0.000000 1.000000 0.000000

calibrationdata/right.yaml

@@ -0,0 +1,26 @@
+image_width: 640
+image_height: 480
+camera_name: right
+camera_matrix:
+  rows: 3
+  cols: 3
+  data: [469.73373,   0.     , 320.57918,
+           0.     , 471.91492, 200.72895,
+           0.     ,   0.     ,   1.     ]
+distortion_model: plumb_bob
+distortion_coefficients:
+  rows: 1
+  cols: 5
+  data: [-0.022394, 0.008106, -0.011521, -0.018003, 0.000000]
+rectification_matrix:
+  rows: 3
+  cols: 3
+  data: [ 0.99942267, -0.01028889, -0.03237995,
+          0.00969371,  0.99978215, -0.01848456,
+          0.03256308,  0.01816001,  0.99930469]
+projection_matrix:
+  rows: 3
+  cols: 4
+  data: [487.63246,   0.     , 338.03998, -41.78024,
+           0.     , 487.63246, 206.55779,   0.     ,
+           0.     ,   0.     ,   1.     ,   0.     ]

src/openarm_camera/openarm_camera/camera.py

@@ -1,130 +1,65 @@
 import rclpy
 from rclpy.node import Node
-
-import cv2
-import numpy as np
-
 from sensor_msgs.msg import Image
 from geometry_msgs.msg import PointStamped
 from cv_bridge import CvBridge
 
+import cv2
+import mediapipe as mp
 
-class StereoHandDepthNode(Node):
+class HandTrackingNode(Node):
-
     def __init__(self):
-        super().__init__('stereo_hand_depth_node')
+        super().__init__('hand_tracking_node')
-
-        # ---------- 参数 ----------
-        self.fx = 600.0   # 焦距（像素）👉 后面用标定值替换
-        self.fy = 600.0
-        self.cx = 320.0
-        self.cy = 240.0
-        self.baseline = 0.06  # 双目基线（米）👉 换成你真实的
-
-        # ---------- OpenCV ----------
         self.bridge = CvBridge()
 
-        self.stereo = cv2.StereoSGBM_create(
+        self.sub = self.create_subscription(
-            minDisparity=0,
-            numDisparities=128,
-            blockSize=7,
-            P1=8 * 3 * 7 ** 2,
-            P2=32 * 3 * 7 ** 2,
-            disp12MaxDiff=1,
-            uniquenessRatio=10,
-            speckleWindowSize=100,
-            speckleRange=32
-        )
-
-        # ---------- ROS ----------
-        # self.left = self.create_subscription(
-        #     Image,
-        #     '/camera/left/image_raw',
-        #     self.image_left_callback,
-        #     10
-        # )
-        # self.right = self.create_subscription(
-        #     Image,
-        #     '/camera/right/image_raw',
-        #     self.image_right_callback,
-        #     10
-        # )
-        self.image = self.create_subscription(
             Image,
-            '/image',
+            '/camera/left/image_raw',
-            self.image_callback,
+            self.image_cb,
             10
         )
+
         self.pub = self.create_publisher(
             PointStamped,
-            '/hand_3d',
+            '/hand/wrist_pixel',
             10
         )
 
-        self.get_logger().info('StereoHandDepthNode started')
+        self.mp_hands = mp.solutions.hands.Hands(
+            static_image_mode=False,
+            max_num_hands=1,
+            min_detection_confidence=0.7,
+            min_tracking_confidence=0.7
+        )
 
-    def image_callback(self, msg: Image):
+    def image_cb(self, msg):
-        # 转 OpenCV
+        img = self.bridge.imgmsg_to_cv2(msg, 'bgr8')
-        frame = self.bridge.imgmsg_to_cv2(msg, desired_encoding='bgr8')
+        rgb = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
 
-        h, w, _ = frame.shape
+        results = self.mp_hands.process(rgb)
-        mid = w // 2
+        if not results.multi_hand_landmarks:
-
-        # 左右拆分
-        left = frame[:, :mid]
-        right = frame[:, mid:]
-        cv2.imshow("left", left)
-        cv2.imshow("right", right)
-
-        # 转灰度
-        left_gray = cv2.cvtColor(left, cv2.COLOR_BGR2GRAY)
-        right_gray = cv2.cvtColor(right, cv2.COLOR_BGR2GRAY)
-
-        # 计算视差
-        disparity = self.stereo.compute(left_gray, right_gray).astype(np.float32) / 16.0
-
-        # ----------- 这里先用“假手点”（画面中心）-----------
-        x = int(self.cx)
-        y = int(self.cy)
-
-        # ROI 取中值，稳很多
-        roi = disparity[y-3:y+3, x-3:x+3]
-        d = np.nanmedian(roi)
-
-        if d <= 0:
             return
 
-        # 深度
+        h, w, _ = img.shape
-        Z = (self.fx * self.baseline) / d
+        wrist = results.multi_hand_landmarks[0].landmark[0]
-        X = (x - self.cx) * Z / self.fx
-        Y = (y - self.cy) * Z / self.fy
 
-        # 发布
+        u = int(wrist.x * w)
-        msg_out = PointStamped()
+        v = int(wrist.y * h)
-        msg_out.header.stamp = self.get_clock().now().to_msg()
-        msg_out.header.frame_id = 'camera_link'
-        msg_out.point.x = float(X)
-        msg_out.point.y = float(Y)
-        msg_out.point.z = float(Z)
 
-        self.pub.publish(msg_out)
+        p = PointStamped()
+        p.header = msg.header
+        p.point.x = float(u)
+        p.point.y = float(v)
+        p.point.z = 0.0  # 暂时不用
 
-        # ----------- 可视化（调试用）-----------
+        self.pub.publish(p)
-        disp_vis = cv2.normalize(disparity, None, 0, 255, cv2.NORM_MINMAX)
-        disp_vis = disp_vis.astype(np.uint8)
-        cv2.circle(disp_vis, (x, y), 5, 255, -1)
 
-        cv2.imshow('disparity', disp_vis)
+def main():
-        cv2.waitKey(10)
+    rclpy.init()
-
+    node = HandTrackingNode()
-
-def main(args=None):
-    rclpy.init(args=args)
-    node = StereoHandDepthNode()
     rclpy.spin(node)
     node.destroy_node()
     rclpy.shutdown()
 
-
 if __name__ == '__main__':
     main()

src/openarm_camera/openarm_camera/camera_pub.py

@@ -5,26 +5,61 @@ from cv_bridge import CvBridge
 import cv2
 import numpy as np
 
+from camera_info_manager import CameraInfoManager
+from sensor_msgs.msg import CameraInfo
+
+CAMERA_WIDTH = int(1280) 
+CAMERA_HEIGHT = int(480)
+
+FRAME_WIDTH = int(CAMERA_WIDTH / 2)
+FRAME_HEIGHT = int(CAMERA_HEIGHT / 2)
+
+print(FRAME_WIDTH, FRAME_HEIGHT)
+ 
 class CameraNode(Node):
     def __init__(self):
         super().__init__('camera_node')
+        left_camera_info_url = 'file:///home/shen/openarm_test/calibrationdata/left.yaml'
+        right_camera_info_url = 'file:///home/shen/openarm_test/calibrationdata/right.yaml'
+        self.left_camera_info_manager = CameraInfoManager(self, cname='left', url=left_camera_info_url, namespace='/stereo_camera/left')
+        self.right_camera_info_manager = CameraInfoManager(self, cname='right', url=right_camera_info_url, namespace='/stereo_camera/right')
+
+        # 设置相机信息文件的路径（不带.yaml后缀）
+        # 假设你的yaml文件放在 /home/username/camera_info/ 目录下，名为 left.yaml 和 right.yaml
+
+
+        # self.left_camera_info_manager.setCameraInfoURL(left_camera_info_url)
+        # self.right_camera_info_manager.setCameraInfoURL(right_camera_info_url)
+        # self.left_camera_info_manager.setURL(left_camera_info_url)
+        # self.right_camera_info_manager.setURL(right_camera_info_url)
+
+        print("2ds1as23d123sa1d32as", self.left_camera_info_manager.getURL())
+        self.left_camera_info_manager.loadCameraInfo()
+        self.right_camera_info_manager.loadCameraInfo()
+        # 然后，你可以通过CameraInfoManager获取CameraInfo消息
+        self.left_camera_info = self.left_camera_info_manager.getCameraInfo()
+        self.right_camera_info = self.right_camera_info_manager.getCameraInfo()
+
+        # 注意：你需要确保yaml文件已经正确放置在指定路径，并且格式正确。
+        self.left_camera_info_pub = self.create_publisher(CameraInfo, '/stereo_camera/left/camera_info', 10)
+        self.right_camera_info_pub = self.create_publisher(CameraInfo, '/stereo_camera/right/camera_info', 10)
 
         self.bridge = CvBridge()
         self.publisher_left = self.create_publisher(Image, '/camera/left/image_raw', 10)
         self.publisher_right = self.create_publisher(Image, '/camera/right/image_raw', 10)
-        self.publisher_raw = self.create_publisher(Image, '/image', 10)
+        self.publisher_raw = self.create_publisher(Image, '/image_1', 10)
         self.get_logger().info('正在初始化摄像头...')
     
         
         # 尝试打开物理摄像头
         self.cap = None
-        for i in range(1):  # 尝试设备0,1,2
+        for i in range(2):  # 尝试设备0,1,2
             self.get_logger().info(f'尝试打开摄像头设备 /dev/video{i}...')
             self.cap = cv2.VideoCapture(i)
             if self.cap.isOpened():
                 # 设置摄像头参数
-                self.cap.set(cv2.CAP_PROP_FRAME_WIDTH, 1600)
+                self.cap.set(cv2.CAP_PROP_FRAME_WIDTH, CAMERA_WIDTH)
-                self.cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 600)
+                self.cap.set(cv2.CAP_PROP_FRAME_HEIGHT, CAMERA_HEIGHT)
                 self.cap.set(cv2.CAP_PROP_FPS, 30)
                 
                 # 让摄像头预热
@@ -39,7 +74,7 @@ class CameraNode(Node):
                     break
 
         
-        self.timer = self.create_timer(0.033, self.timer_callback)  # 30Hz
+        self.timer = self.create_timer(0.001, self.timer_callback)  # 30Hz
         self.get_logger().info('摄像头节点已启动')
     
     def timer_callback(self):
@@ -48,19 +83,23 @@ class CameraNode(Node):
             # frameDist = cv2.rotate(frame, cv2.ROTATE_90_COUNTERCLOCKWISE)
             # cv2.imshow("camera_left", frame[:, :800])
             # cv2.imshow("camera_right", frame[:, 800:])
-            cv2.waitKey(10)
+            cv2.waitKey(0)
-            msg_left= self.bridge.cv2_to_imgmsg(frame[:, :800], 'bgr8')
+            time = self.get_clock().now().to_msg()
-            msg_right= self.bridge.cv2_to_imgmsg(frame[:, 800:], 'bgr8')
+            msg_left= self.bridge.cv2_to_imgmsg(frame[:, :FRAME_WIDTH], encoding='bgr8')
-            msg_raw= self.bridge.cv2_to_imgmsg(frame, 'bgr8')
+            msg_right= self.bridge.cv2_to_imgmsg(frame[:, FRAME_WIDTH:], encoding='bgr8')
-            msg_left.header.stamp = self.get_clock().now().to_msg()
+            msg_raw= self.bridge.cv2_to_imgmsg(frame, encoding='bgr8')
-            msg_right.header.stamp = self.get_clock().now().to_msg()
+            msg_left.header.stamp = time
-            msg_raw.header.stamp = self.get_clock().now().to_msg()
+            msg_right.header.stamp = time
+            msg_raw.header.stamp = time
             msg_left.header.frame_id = 'camera_frame_left'
             msg_right.header.frame_id = 'camera_frame_right'
             msg_raw.header.frame_id = 'camera_frame_raw'
             self.publisher_left.publish(msg_left)
             self.publisher_right.publish(msg_right)
             self.publisher_raw.publish(msg_raw)
+            # 发布相机信息
+            self.left_camera_info_pub.publish(self.left_camera_info)
+            self.right_camera_info_pub.publish(self.right_camera_info)
         
 
 

src/openarm_camera/openarm_camera/hand_3d_node.py

@@ -0,0 +1,92 @@
+import rclpy
+from rclpy.node import Node
+from geometry_msgs.msg import PoseStamped, PointStamped
+from sensor_msgs.msg import Image, CameraInfo
+from cv_bridge import CvBridge
+import numpy as np
+
+class Hand3DNode(Node):
+    def __init__(self):
+        super().__init__('hand_3d_node')
+        self.bridge = CvBridge()
+
+        self.fx = self.fy = self.cx = self.cy = None
+
+        self.sub_pixel = self.create_subscription(
+            PointStamped,
+            '/hand/wrist_pixel',
+            self.pixel_cb,
+            10
+        )
+
+        self.sub_depth = self.create_subscription(
+            Image,
+            '/camera/depth/image',
+            self.depth_cb,
+            10
+        )
+
+        self.sub_info = self.create_subscription(
+            CameraInfo,
+            '/camera/left/camera_info',
+            self.info_cb,
+            10
+        )
+
+        self.pub = self.create_publisher(
+            PoseStamped,
+            '/hand/pose_camera',
+            10
+        )
+
+        self.last_pixel = None
+        self.depth_img = None
+
+    def info_cb(self, msg):
+        self.fx = msg.k[0]
+        self.fy = msg.k[4]
+        self.cx = msg.k[2]
+        self.cy = msg.k[5]
+
+    def pixel_cb(self, msg):
+        self.last_pixel = (int(msg.point.x), int(msg.point.y), msg.header)
+
+    def depth_cb(self, msg):
+        self.depth_img = self.bridge.imgmsg_to_cv2(msg, desired_encoding='passthrough')
+        self.try_publish()
+
+    def try_publish(self):
+        if self.last_pixel is None or self.depth_img is None:
+            return
+        if self.fx is None:
+            return
+
+        u, v, header = self.last_pixel
+        depth = self.depth_img[v, u]
+
+        if depth <= 0.0:
+            return
+
+        Z = depth
+        X = (u - self.cx) * Z / self.fx
+        Y = (v - self.cy) * Z / self.fy
+
+        pose = PoseStamped()
+        pose.header = header
+        pose.header.frame_id = 'camera_frame'
+        pose.pose.position.x = X
+        pose.pose.position.y = Y
+        pose.pose.position.z = Z
+
+        pose.pose.orientation.w = 1.0  # 先固定姿态
+
+        self.pub.publish(pose)
+
+def main():
+    rclpy.init()
+    node = Hand3DNode()
+    rclpy.spin(node)
+    rclpy.shutdown()
+
+if __name__ == '__main__':
+    main()

src/openarm_camera/openarm_camera/stereo_hand_depth_node.py

@@ -0,0 +1,195 @@
+import rclpy
+from rclpy.node import Node
+
+import cv2
+import numpy as np
+
+from sensor_msgs.msg import Image
+from geometry_msgs.msg import PointStamped
+from cv_bridge import CvBridge
+from sensor_msgs.msg import CameraInfo
+import mediapipe as mp
+
+
+class StereoHandDepthNode(Node):
+
+    def __init__(self):
+        super().__init__('stereo_hand_depth_node')
+
+        # ---------- 参数 ----------
+        self.fx = 600.0   # 焦距（像素）👉 后面用标定值替换
+        self.fy = 600.0
+        self.cx = 320.0
+        self.cy = 240.0
+        self.baseline = 0.06  # 双目基线（米）👉 换成你真实的
+
+        # ---------- OpenCV ----------
+        self.numDisparities = 128  # 必须是16的倍数
+        self.bridge = CvBridge()
+
+        self.stereo = cv2.StereoSGBM_create(
+            minDisparity=0,
+            numDisparities=self.numDisparities,
+            blockSize=7,
+            P1=8 * 3 * 7 ** 2,
+            P2=32 * 3 * 7 ** 2,
+            disp12MaxDiff=1,
+            uniquenessRatio=10,
+            speckleWindowSize=100,
+            speckleRange=32
+        )
+        
+
+        # ---------- ROS ----------
+        self.left_info = None
+        self.right_info = None
+        self.sub = self.create_subscription(
+            Image,
+            '/image_1',
+            self.image_callback,
+            10
+        )
+        self.sub = self.create_subscription(
+            CameraInfo,
+            '/stereo_camera/left/camera_info',
+            self.left_camera_info_callback,
+            10
+        )
+        self.sub = self.create_subscription(
+            CameraInfo,
+            '/stereo_camera/right/camera_info',
+            self.right_camera_info_callback,
+            10
+        )
+
+        self.pub = self.create_publisher(
+            PointStamped,
+            '/hand_3d',
+            10
+        )
+
+        self.mp_hands = mp.solutions.hands.Hands(
+            static_image_mode=False,
+            max_num_hands=1,
+            min_detection_confidence=0.7,
+            min_tracking_confidence=0.7
+        )
+        self.get_logger().info('StereoHandDepthNode started')
+
+    def init_rectify_maps(self, left_info, right_info, image_size):
+        K1 = np.array(left_info.k).reshape(3, 3)
+        D1 = np.array(left_info.d)
+        K2 = np.array(right_info.k).reshape(3, 3)
+        D2 = np.array(right_info.d)
+
+        R1 = np.array(left_info.r).reshape(3, 3)
+        R2 = np.array(right_info.r).reshape(3, 3)
+
+        P1 = np.array(left_info.p).reshape(3, 4)
+        P2 = np.array(right_info.p).reshape(3, 4)
+
+        map1_l, map2_l = cv2.initUndistortRectifyMap(
+            K1, D1, R1, P1[:3, :3], image_size, cv2.CV_32FC1
+        )
+
+        map1_r, map2_r = cv2.initUndistortRectifyMap(
+            K2, D2, R2, P2[:3, :3], image_size, cv2.CV_32FC1
+        )   
+        return map1_l, map2_l, map1_r, map2_r
+
+    def left_camera_info_callback(self, msg: CameraInfo):
+        self.left_info = msg
+
+    def right_camera_info_callback(self, msg: CameraInfo):
+        self.right_info = msg
+
+    def image_callback(self, msg: Image):
+
+        if self.left_info is None or self.right_info is None:
+            return
+        self.map1_l, self.map2_l, self.map1_r, self.map2_r = self.init_rectify_maps(self.left_info, self.right_info, (640, 480))
+        self.fx = self.left_info.p[0]
+        self.fy = self.left_info.p[5]
+        self.cx = self.left_info.p[2]
+        self.cy = self.left_info.p[6]
+
+        self.baseline = -self.right_info.p[3] / self.fx
+        # self.get_logger().info(f'baseline = {self.baseline:.4f} m')
+        # 转 OpenCV
+        frame = self.bridge.imgmsg_to_cv2(msg, desired_encoding='bgr8')
+
+        h, w, _ = frame.shape
+        mid = w // 2
+        # print("Frame size:", w, h)
+
+        # 左右拆分
+        left = frame[:, :mid]
+        right = frame[:, mid:]
+        left_rect = cv2.remap(left, self.map1_l, self.map2_l, cv2.INTER_LINEAR)
+        right_rect = cv2.remap(right, self.map1_r, self.map2_r, cv2.INTER_LINEAR)
+        results = self.mp_hands.process(left_rect)
+        p = PointStamped()
+        if results.multi_hand_landmarks:
+            wrist = results.multi_hand_landmarks[0].landmark[0]
+
+            u = int(wrist.x * w)
+            v = int(wrist.y * h)
+            p.header = msg.header
+            p.point.x = float(u)
+            p.point.y = float(v)
+            p.point.z = 0.0  # 暂时不用
+
+        # 转灰度
+        left_gray = cv2.cvtColor(left_rect, cv2.COLOR_BGR2GRAY)
+        right_gray = cv2.cvtColor(right_rect, cv2.COLOR_BGR2GRAY)
+        # cv2.imshow('left', left_gray)
+
+        # 计算视差
+        disparity = self.stereo.compute(left_gray, right_gray).astype(np.float32) / 16.0
+
+        # ----------- 这里先用“假手点”（画面中心）-----------
+        x = int(p.point.x)
+        y = int(p.point.y)
+        print(f'Wrist pixel: ({x}, {y})')
+        # ROI 取中值，稳很多
+        roi = disparity[y-3:y+3, x-3:x+3]
+        d = np.nanmedian(roi)
+        print(f'Disparity at wrist: {roi}')
+
+        if d <= 0:
+            return
+
+        # 深度
+        Z = (self.fx * self.baseline) / d
+        X = (x - self.cx) * Z / self.fx
+        Y = (y - self.cy) * Z / self.fy
+
+        # 发布
+        msg_out = PointStamped()
+        msg_out.header.stamp = self.get_clock().now().to_msg()
+        msg_out.header.frame_id = 'camera_link'
+        msg_out.point.x = float(X)
+        msg_out.point.y = float(Y)
+        msg_out.point.z = float(Z)
+
+        self.pub.publish(msg_out)
+
+        # ----------- 可视化（调试用）-----------
+        disp_vis = cv2.normalize(disparity, None, 0, 255, cv2.NORM_MINMAX)
+        disp_vis = disp_vis.astype(np.uint8)
+        cv2.circle(disp_vis, (x, y), 5, 255, -1)
+        disp_vis = disp_vis[:, self.numDisparities:]
+        cv2.imshow('disparity', disp_vis)
+        cv2.waitKey(1)
+
+
+def main(args=None):
+    rclpy.init(args=args)
+    node = StereoHandDepthNode()
+    rclpy.spin(node)
+    node.destroy_node()
+    rclpy.shutdown()
+
+
+if __name__ == '__main__':
+    main()

src/openarm_camera/setup.py

@@ -31,6 +31,7 @@ setup(
         'console_scripts': [
             'camera_node = openarm_camera.camera:main',
             'camera_pub_node = openarm_camera.camera_pub:main',
+            'stereo_hand_depth_node = openarm_camera.stereo_hand_depth_node:main',
         ],
     },
 )