Abstract: This disclosure concerns processing of electronic images, such as hyperspectral or multispectral images. In particular, this disclosure provides methods, software and computer systems for estimating an illumination spectrum of a digital image. A processor applies a neural network to the digital image by calculating three-dimensional convolutions in one or more convolutional layers of the neural network. The three-dimensional convolutions comprise a convolution along a spectral dimension. The processor then evaluates an output layer, connected to the one or more convolutional layers in the neural network. The output layer has multiple output values that each provide an intensity value for a respective band of the illumination spectrum of the digital image.

Abstract: There is provided a method for creating artificial vision with an implantable visual stimulation device. The method comprises receiving image data comprising, for each of multiple points of the image, a depth value, performing a local background enclosure calculation on the input image to determine salient object information, and generating a visual stimulus to visualise the salient object information using the visual stimulation device. Determining the salient object information is based on a spatial variance of at least one of the multiple points of the image in relation to a surface model that defines a surface in the input image.

Abstract: A method for creating artificial vision with an implantable visual stimulation device. The method comprises receiving image data comprising, for each of multiple points of an image, a depth value, performing a local background enclosure calculation on the image data to determine salient object information, and generating a visual stimulus to visualise the salient object information using the implantable visual stimulation device. Performing the local background enclosure calculation is based on a subset of the multiple points of the input image, and the subset of the multiple points is defined based on the depth value of the multiple points.