Conv2DLayer class

A 2D convolutional layer.

This layer creates a set of convolutional filters (kernels) that are convolved with the input to produce a stack of output feature maps. It is the primary building block for Convolutional Neural Networks (CNNs).

This implementation takes a single-channel input (2D Matrix) and produces a multi-channel output (3D Tensor).

• Input: A Tensor<Matrix> representing a single-channel image of shape [height, width].
• Output: A Tensor<Tensor3D> representing the output feature maps, with a shape of [output_channels, new_height, new_width].

Example

// A layer that creates 8 feature maps using 3x3 kernels.
Layer conv = Conv2DLayer(8, 3, activation: ReLU());

Inheritance

• Object
• Layer
• Conv2DLayer

Constructors

Conv2DLayer(int outChannels, int kernelSize, {String padding = 'valid', ActivationFunction? activation})

Properties

activation ↔ ActivationFunction?

getter/setter pair

biases ↔ Tensor<Vector>

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

kernels ↔ List<Tensor<Matrix>>

getter/setter pair

kernelSize ↔ int

getter/setter pair

name ↔ String

A user-friendly name for the layer (e.g., 'dense', 'lstm').

getter/setter pair, override-getter

outChannels ↔ int

getter/setter pair

padding ↔ String

getter/setter pair

parameters → List<Tensor>

A list of all trainable tensors (weights and biases) in the layer.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(Tensor input) → void

Initializes the layer's parameters based on the shape of the first input.

override

call(Tensor input) → Tensor

The public, callable interface for the layer.

inherited

forward(Tensor input) → Tensor<Tensor3D>

The core logic of the layer's transformation.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited