Control method, camera assembly, and mobile terminal with panchromatic pixels and minimum repeating units

A camera assembly, comprising an image sensor and a processor, the image sensor comprising a two-dimensional pixel array and a lens array, the two-dimensional pixel array comprising a plurality of color pixels and a plurality of panchromatic pixels, the plurality of color pixels having narrower spectral responses than the plurality of panchromatic pixels;

• the two-dimensional pixel array comprising minimum repeating units, in which the plurality of panchromatic pixels are arranged in a first diagonal direction and the plurality of color pixels are arranged in a second diagonal direction being different from the first diagonal direction;
• each of the minimum repeating units comprising a plurality of sub-units, and each of the plurality of sub-units comprising at least two color pixels of the plurality of color pixels and at least two panchromatic pixels of the plurality of panchromatic pixels;
• and
• the lens array comprising a plurality of lenses, and each of the plurality of lenses covering a corresponding one sub-unit of the plurality of sub-units, the processor being configured to:
• obtain phase information of different pixels of the corresponding one sub-unit covered by the lens;
• and
• calculate a phase difference according to the phase information of the different pixels, to perform focusing;
• wherein the processor is further configured to:
• in response to an ambient brightness being smaller than a first predetermined brightness, obtain phase information of different panchromatic pixels of the corresponding one sub-unit covered by the lens and calculate a phase difference according to the phase information of the different panchromatic pixels, to perform focusing:
• in response to the ambient brightness being greater than a second predetermined brightness, obtain phase information of different color pixels of the corresponding one sub-unit covered by the lens, and calculate a phase difference according to the phase information of the different color pixels, to perform focusing;
• and
• in response to the ambient brightness being greater than the first predetermined brightness and smaller than the second predetermined brightness, obtain the phase information of the different panchromatic pixels of the corresponding one sub-unit covered by the lens and the phase information of the different color pixels of the corresponding one sub-unit covered by the lens, and calculate a phase difference according to at least one of the phase information of the different panchromatic pixels and the phase information of the different color pixels to perform focusing.

A mobile terminal, comprising:

• a housing;
• and
• a camera assembly mounted on the housing and comprising an image sensor and a processor, the image sensor comprising a two-dimensional pixel array and a lens array, the two-dimensional pixel array comprising a plurality of color pixels and a plurality of panchromatic pixels, the plurality of color pixels having narrower spectral responses than the plurality of panchromatic pixels;
• the two-dimensional pixel array comprising minimum repeating units, in which the plurality of panchromatic pixels are arranged in a first diagonal direction and the plurality of color pixels are arranged in a second diagonal direction being different from the first diagonal direction;
• each of the minimum repeating units comprising a plurality of sub-units, and each of the plurality of sub-units comprising at least two color pixels of the plurality of color pixels and at least two panchromatic pixels of the plurality of panchromatic pixels;
• and the lens array comprising a plurality of lenses, and each of the plurality of lenses covering a corresponding one sub-unit of the plurality of sub-units, the processor being configured to:
• obtain phase information of different pixels of the corresponding one sub-unit covered by the lens;
• and
• calculate a phase difference according to the phase information of the different pixels, to perform focusing;
• wherein the processor is further configured to:
• obtain the phase information of the at least two color pixels arranged in the second diagonal direction of the corresponding one sub-unit covered by the lens;
• form a first color phase curve according to first phase information of the phase information of the at least two color pixels arranged in the second diagonal direction of the corresponding one sub-unit covered by the lens;
• form a second color phase curve according to first phase information of the phase information of the at least two color pixels arranged in the second diagonal direction of the corresponding one sub-unit covered by the lens;
• and
• calculate the phase difference according to positions of peaks of the first color phase curve and the second color phase curve.