ELECTRONIC DEVICE FOR REMOVING BACKGROUND NOISE ON BASIS OF SPATIAL FREQUENCY, AND IMAGE SIGNAL PROCESSING METHOD

摘要

Disclosed are an electronic device for removing background noise on the basis of spatial frequency, and an image signal processing method. The electronic device comprises at least an image sensor and a processor, wherein the image sensor senses an image of an object; and the processor executes the following image signal processing actions: receiving a composite image generated by the image sensor; converting the composite image from a spatial domain into a frequency domain to obtain a composite frequency domain component; deducting, from the composite frequency domain component, a background component corresponding to a frequency domain noise position in order to obtain a clear frequency domain component that represents an image signal; and carrying out subsequent processing according to the clear frequency domain component in order to generate an image signal for an electronic device to apply same.