Vocabulary

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A practical dictionary of 512 AI, machine learning, mathematics, and programming terms from HerbDev’s AI Vocabulary app. Start with a definition, explore an example, then follow the concepts behind it.

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Pointwise Convolution

CNNs · Level 2 of 5

Pointwise Convolution

A convolution with a one-by-one spatial kernel.

It mixes channels at each position without spatial neighborhood mixing.

Example

A layer reduces 128 channels to 32 at each pixel location.

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Audio transcript

Pointwise Convolution. A convolution with a one-by-one spatial kernel. It mixes channels at each position without spatial neighborhood mixing. For example: A layer reduces 128 channels to 32 at each pixel location.

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This helps you interpret feature shapes and spatial behavior in image networks.

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Convolution

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