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1,224,224] to have 3 channels，根源是 batch 维度放置位置错误">报错 expected input [3,1,224,224] to have 3 channels，根源是 batch 维度放置位置错误

出现 expected input [3,1,224,224] to have 3 channels 这个 PyTorch 图像输入报错，核心原因就是张量维度顺序搞错、batch 维

2026-11-09 17:50:36