fix(pybot): 录制时改用同步 capture() 按需抓帧,避免帧重复
_grab_frame 从 camera.latest()(读后台队列)改为 camera.capture() (直接调 grabber 同步抓帧),确保每个微动作拿到独立帧而非队列中 可能重复的旧帧。Camera 新增 capture() 方法。
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@@ -254,13 +254,13 @@ class RobotStruct:
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return vec
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def _grab_frame(self, camera_var):
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"""从摄像头取最新帧;dry_run 或无帧时返回随机噪声帧"""
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"""从摄像头同步抓一帧;dry_run 或无帧时返回随机噪声帧"""
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import numpy as np
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if camera_var is not None:
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result = camera_var.play({})
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if result is not None:
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return result[1] # (timestamp, frame)
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# dry_run 或队列空:随机噪声帧(用 camera 配置尺寸)
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frame = camera_var.camera.capture()
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if frame is not None:
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return frame
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# dry_run 或无 grabber:随机噪声帧(用 camera 配置尺寸)
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h, w = 480, 640
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if camera_var is not None:
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cam = camera_var.camera
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