Method and apparatus of performing spatial domain-based optical convolution operation

An apparatus for performing wireless charging, the apparatus comprising:

• a processor and a memory,
• wherein the processor is configured to:
• perform a first optical Fourier transform on a spatial domain image;
• perform a second optical Fourier transform on a spatial domain kernel;
• perform an element-wise product operation between a result of the first optical Fourier transform and a result of the second optical Fourier transform;
• calculate a convolution result by performing a third optical Fourier transform on a result of the element-wise product operation;
• and
• obtain data based on the convolution result.

One or more non-transitory computer readable medium storing one or more instructions,

• wherein the one or more instructions are executed by one or more processors and control an apparatus for performing wireless charging to:
• perform a first optical Fourier transform on a spatial domain image;
• perform a second optical Fourier transform on a spatial domain kernel;
• perform an element-wise product operation between a result of the first optical Fourier transform and a result of the second optical Fourier transform;
• calculate a convolution result by performing a third optical Fourier transform on a result of the element-wise product operation;
• and
• obtain data based on the convolution result.