新的观测显示,右侧桌面上有两块手表,分别位于像素 (512, 234) 和 (524, 295),除此之外,还有左侧夹爪握持着的那块重新拾起的手表。我最初只数到右侧一块手表和左侧一块手表。位于 (524, 295) 的手表是被移位了,还是它其实是最初被右臂遮住的第二块手表?初始右侧指尖投影在 (515, 244) 附近,接近可见手表所在的 (512, 234),所以另一块手表可能被遮挡了。我之前认为右侧手表移动了,实际上可能是第二块手表显露出来了。我现在数到七个物体:三块手表、两个甜椒和两辆汽车,我需要把它们全部分类放置。
我会跟踪左侧握持的手表、位于 (512, 234) 的右后方手表、位于 (524, 295) 的右前方手表,以及中央和右侧的汽车。两个甜椒看起来都在蓝色篮子内部。第一个位于 (312, 171) 附近。右侧夹爪后方、(343, 185) 或 (344, 187) 附近的一小部分红色,很可能属于第二个甜椒,它的位置可能在 (345, 187) 附近。蓝色篮子覆盖图像 x = 260–378,那个被部分遮挡的红色物体位于其中。我仍然应该验证它确实是第二个甜椒,并且留在篮子内部。右侧夹爪看起来是空的,而且已经张开。
左侧手表仍被握持着,不过腕部尚未达到预期的中间倾斜朝向。左侧腕部视图显示,居中的手表后方是白色篮子内部。在高机位视图中,手表位于 (195, 158) 附近,处在白色内部区域大约 y = 140–210 的范围内。我最初考虑在释放之前完成倾斜,但它当前的位置看起来已经合适。当前四元数为 [0.595, -0.382, 0.382, 0.595]。目标中间倾斜为 45°,而当前前向倾斜可能约为 25° 或 26°。我估计手表位于第六连杆前方约 0.07米,其中心接近 y = +0.011米,或者使用第六连杆 y = -0.057米计算时约为 +0.013米。这似乎已经充分进入白色篮子,因此我会直接释放,而不再完成倾斜。
右臂已张开,第六连杆位置为 (0.124, -0.118, 1.034) m,朝向接近基本的自上而下姿态。放好当前握持的手表之后,还剩两块右侧手表和两辆汽车。手表似乎比汽车容易处理,所以我会用右臂取它们,并利用桌面转交给左臂。
对于像素 (512, 234) 处的右后方手表,假设 z = 0.775米,我最初在想 x 是否大约为 0.384米。之前在 z = 0.785米时的估计约为 x = 0.408米、y = -0.093米;在 z = 0.775米时,我估计 x = 0.414米、y = -0.083米。位于 (524, 295) 的右前方手表,同样假设 z = 0.775米,可能在 x = 0.429米、y = -0.262米附近。后方手表的预抓取第六连杆目标若为 (0.40, -0.09, 0.99) m,距离当前右侧姿态约为 0.277米,超过了 0.25米的指令限制。前方手表的预抓取目标若为 (0.42, -0.25, 0.98) m,距离约为 0.326米。我需要一个中间路径点。我考虑过 (0.30, -0.18, 1.02) m,随后又考虑 (0.32, -0.18, 1.03) m,以避开汽车,包括位于 (0.246, -0.161) m 附近的那辆;另一辆汽车的位置此处尚未指定。
对于之后的转交,我考虑过 x = 0米、y = -0.1米附近的位置;(0.05, -0.15) m;或 (-0.08, -0.15) m。右臂能否够到 x = -0.08米?这意味着从其基座横跨约 0.38米,可能接近其极限,不过较低的第六连杆高度 z = 0.95米和 y = -0.15米或许会有帮助。左臂可能能够够到 (0, -0.15) m 处的转交点,第六连杆 z = 0.93米。位于 (0, -0.2) m 的点可能对两条机械臂都可达,因为沿 Y 方向,它比左臂之前在 y = -0.03米附近的伸展位置更近。
中央汽车位于 (-0.014, -0.128) m 附近,而移走中间的甜椒可能已经腾出了 (0.05, -0.25) m 周围的空间。我计划将桌面转交点设在 (0, -0.27) m,位于中央汽车前方,并避开其他物体。左臂需要从其基座横跨约 0.3米,但这个位置沿 Y 方向更近。右臂可以将每块手表放在那里,左臂则可以拾起它,并通过向前倾斜将其放入白色篮子。释放当前手表之后,左臂可以向该转交点移动并等待,同时右臂逐一取来手表。
右臂能否直接将手表放入白色篮子?从大约 x = 0.3米、y = -0.1米的位置,沿 +Y 倾斜手指会改变其前向可达距离,但不会使它们朝位于 x = -0.3米的白色篮子移动。将局部 +X 朝向 -X,可能增加约 0.157米的向左可达距离,但这不足以跨越约 0.6米的间隔。因此,我预计需要通过桌面转交。汽车可以使用右臂和前向倾斜,直接放入红色篮子。
对于汽车,我可能会尝试围绕车顶进行更慢的自上而下抓取,然后直接向前倾斜,以减少竖直抬升和搬运。第一辆汽车在较高的竖直抬升过程中滑落了。位于 (0.246, -0.161) m 的右侧汽车接近红色篮子,篮子大约位于 x = 0.3米、y = 0.05米,因此它只需要向前移动约 0.2米。我可以在第六连杆 z = 0.94米时抓取,向前倾斜以将物体抬高约 0.05米,并使第六连杆稍微向后移动,将它摆到篮子上方。这可能避免之前发生滑落前的高位抬升和长距离搬运。中央汽车也可以采用类似的方法。我考虑过现在就尝试,因为右臂靠近这些汽车,但我会优先处理更容易的手表,把这个替代方案留到之后。
对于接下来的动作,我最初考虑用三步释放左侧手表。我会改为使用八步执行组合动作:保持左侧姿态不变并张开其夹爪,同时让张开的右臂通过第六连杆目标 (0.32, -0.14, 1.03) m 向后方手表移动,使用基本的自上而下四元数 [0.5, -0.5, 0.5, 0.5]。我估计右侧目标距离为 0.197米,处于指令限制内。路径穿过中央区域,可能经过甜椒或篮子上方,但当第六连杆 z = 1.03米时,指尖大约位于 z = 0.872米,高于估计为 z = 0.82米的边沿。我判断这一间隙足够。释放之后,左侧夹爪将保持张开,我会检查下一次观测。
原文6,235 字
The new observation shows two watches on the right table, at pixels (512, 234) and (524, 295), in addition to the recovered watch held by the left gripper. I originally counted only one right watch and one left watch. Was the watch at (524, 295) displaced, or was it a second watch initially hidden beneath the right arm? The initial right fingertip projected near (515, 244), close to the visible watch at (512, 234), so another watch might have been occluded. My earlier interpretation that the right-side watch shifted may actually have been the revelation of a second watch. I now count seven objects: three watches, two peppers, and two cars, and I need to sort all of them.
I will track the held left watch, the back-right watch at (512, 234), the front-right watch at (524, 295), and the central and right cars. Both peppers appear to be inside the blue basket. The first is near (312, 171). A small red portion near (343, 185), or (344, 187), behind the right gripper likely belongs to the second pepper, whose position may be around (345, 187). The blue basket spans image x = 260–378, and that partly occluded red object is within it. I should still verify that it is the second pepper and is contained. The right gripper appears empty and open.
The left watch remains held, although the wrist has not reached the intended halfway tilt. The left wrist view shows the white basket interior behind the centered watch. In the high view, the watch is near (195, 158), within the white interior's approximate y = 140–210 span. I first considered finishing the tilt before releasing, but its current position already appears suitable. The current wxyz quaternion is [0.595, -0.382, 0.382, 0.595]. The target halfway tilt is 45°, while the current forward tilt may be about 25° or 26°. I estimate the watch is about 0.07 m forward of link6, placing its center near y = +0.011 m, or about +0.013 m using link6 y = -0.057 m. That seems sufficiently inside the white basket, so I will release without completing the tilt.
The right arm is open at link6 position (0.124, -0.118, 1.034) m, with its orientation near the base top-down pose. After placing the held watch, two right watches and two cars remain. The watches seem easier than the cars, so I will fetch them with the right arm and use the table for transfers to the left arm.
For the back-right watch at pixel (512, 234), assuming z = 0.775 m, I initially wonder whether x is around 0.384 m. The earlier estimate at z = 0.785 m was approximately x = 0.408 m and y = -0.093 m; at z = 0.775 m, I estimate x = 0.414 m and y = -0.083 m. The front-right watch at (524, 295), also assuming z = 0.775 m, may be around x = 0.429 m and y = -0.262 m. A back-watch pre-grasp link6 target of (0.40, -0.09, 0.99) m would be about 0.277 m from the current right pose, exceeding the 0.25 m command limit. A front-watch pre-grasp target of (0.42, -0.25, 0.98) m would be about 0.326 m away. I need an intermediate waypoint. I considered (0.30, -0.18, 1.02) m, then (0.32, -0.18, 1.03) m to avoid the cars, including the one near (0.246, -0.161) m; the other car's position is not yet specified here.
For the later transfer, I considered locations near x = 0 m, y = -0.1 m; (0.05, -0.15) m; or (-0.08, -0.15) m. Could the right arm reach x = -0.08 m? That would mean crossing about 0.38 m from its base, perhaps near its limit, though a lower link6 height of z = 0.95 m and y = -0.15 m might help. The left arm might reach a transfer at (0, -0.15) m with link6 z = 0.93 m. A point at (0, -0.2) m may be reachable by both arms because it is closer along Y than the left arm's earlier extended position near y = -0.03 m.
The central car is near (-0.014, -0.128) m, and removing the middle pepper may have cleared space around (0.05, -0.25) m. I will plan the table transfer at (0, -0.27) m, in front of the central car and clear of the other objects. The left arm would reach about 0.3 m across from its base, but this location is closer along Y. The right arm can set down each watch there, and the left can pick it up and place it in the white basket using the forward tilt. After releasing the current watch, the left arm can move toward that transfer point and wait while the right fetches the watches one at a time.
Could the right arm place the watches directly into the white basket? From around x = 0.3 m, y = -0.1 m, tilting the fingers along +Y changes their forward reach but does not move them toward the white basket at x = -0.3 m. Orienting local +X toward -X might add about 0.157 m of leftward reach, but that is insufficient for the approximately 0.6 m separation. I therefore expect to need the table transfer. The cars can go directly into the red basket using the right arm and a forward tilt.
For the cars, I may try a slower top-down grasp around the roof followed by a direct forward tilt, reducing vertical lifting and transport. The first car slipped during a high vertical lift. The right car at (0.246, -0.161) m is near the red basket around x = 0.3 m, y = 0.05 m, so it needs only about 0.2 m of forward movement. I could grasp with link6 z = 0.94 m, tilt forward to raise the object about 0.05 m, and move link6 slightly backward to swing it over the basket. This might avoid the high lift and long transport that preceded the slip. The central car could use a similar approach. I considered trying it now because the right arm is near the cars, but I will prioritize the easier watches and leave that alternative for later.
For the immediate action, I initially considered three steps to release the left watch. I will instead use eight steps for the combined action, holding the left pose unchanged and opening its gripper while moving the open right arm toward the back watch through link6 target (0.32, -0.14, 1.03) m with the base top-down quaternion [0.5, -0.5, 0.5, 0.5]. I estimate the right target distance at 0.197 m, within the command limit. The path crosses the central area and may pass above a pepper or basket, but at link6 z = 1.03 m the fingertips would be near z = 0.872 m, above the estimated rim at z = 0.82 m. I judge that clearance sufficient. The left gripper will remain open after release, and I will inspect the next observation.