Concept网格采样
grid_sample
An operation that samples values from an input feature map based on a coordinate grid. It is commonly used in spatial transformer networks and belongs to the class of dynamic operators, which typically lack hardware support on mobile NPUs.
Timeline (last 90 days)
Oct 29
Qualcomm's Hexagon NPU (and the earlier DSP) has relatively limited operator support, mainly optimizing static-graph operators such as regular convolution, pooling and activation; for dynamic operators such as deformable convolution and grid_sample, execution typically needs to fall back to the CPU or GPU, or developers must manually implement approximate versions.
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