refactor(actpred): 默认图像分辨率改回 640×480

实机测速显示 1080p 采集的预处理缩放(约 45ms)主导端到端延迟
(测速报告 §6.1),640×480 下端到端 18.6ms,与 NPU/ORT 推理开销
更匹配。640×480 亦能被 16 整除,部署导出池化无损失。
已有 checkpoint 自带配置不受影响,仅改新训练默认值。
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qing committed 2026-08-13 15:25:09 +08:00
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@@ -16,7 +16,7 @@ def _natural_key(p):
class ActionDataset(Dataset):
def __init__(self, data_dir: str, history_len: int, action_dim: int,
image_width: int = 1920, image_height: int = 1080,
image_width: int = 640, image_height: int = 480,
normalize_actions: bool = False,
action_stats_path: str = None, episode_indices: list = None,
frame_len: int = 3):