Electronic device and method for dynamically adjusting exposure parameter of spectral sensor

An electronic device, comprising:

• one or more processors;
• a spectral sensor coupled to the one or more processors, wherein the spectral sensor includes a plurality of visible optical channels and a Clear channel, and wherein a wavelength range of any one visible optical channel in the plurality of visible optical channels is located within a wavelength range of the Clear channel;
• a communication apparatus coupled to the one or more processors;
• a display apparatus coupled to the one or more processors, wherein the display apparatus is configured to display an image;
• and
• one or more memories coupled to the one or more processors and storing instructions that, when executed by the one or more processors, cause the electronic device to be configured to:
• receive a first user operation on a camera application;
• start the camera application and present a photographing interface in response to the first user operation, wherein the photographing interface includes a photographing control and an image preview area;
• receive a second user operation on the photographing control;
• and photograph a picture and display a photographing processing interface in the image preview area in response to the second user operation, wherein, in a process of photographing the picture, the electronic device is further configured to:
• receive a Clear value of the spectral sensor;
• extend an exposure time of the spectral sensor based on the Clear value being less than or equal to a first threshold and an analog gain of the spectral sensor being greater than or equal to a second threshold, wherein the second threshold is an upper threshold of the analog gain of the spectral sensor;
• increase the analog gain of the spectral sensor based on the Clear value being less than or equal to the first threshold and the analog gain of the spectral sensor being less than the second threshold;
• reduce the analog gain of the spectral sensor based on the Clear value being greater than the first threshold and an exposure time of the spectral sensor being greater than or equal to a third threshold, wherein the third threshold is a lower threshold over the exposure time of the spectral sensor;
• shorten the exposure time of the spectral sensor based on the Clear value being greater than the first threshold and the exposure time of the spectral sensor being less than the third threshold;
• acquire a spectral data of a photographing environment output by the spectral sensor based on adjusted exposure parameters;
• convert a light signal obtained through a lens into an electrical signal through a photosensitive element of the electronic device;
• process the electrical signal to obtain an initial image;
• and
• perform white balance processing on the initial image based on the spectral data of the photographing environment to obtain a processed image.

A non-transitory computer-readable storage medium storing instructions that, when executed by a processor of an electronic device, cause the electronic device to be configured to:

• receive a first user operation on a camera application;
• start the camera application and present a photographing interface in response to the first user operation, wherein the photographing interface includes a photographing control and an image preview area;
• receive a second user operation on the photographing control;
• and
• photograph a picture and display a photographing processing interface in the image preview area in response to the second user operation, wherein, in a process of photographing the picture, the electronic device is further configured to:
• receive a Clear value of a spectral sensor of the electronic device, wherein the spectral sensor includes a plurality of visible optical channels and a Clear channel, and wherein a wavelength range of any one visible optical channel in the plurality of visible optical channels is located within a wavelength range of the Clear channel;
• extend an exposure time of the spectral sensor based on the Clear value being less than or equal to a first threshold and an analog gain of the spectral sensor being greater than or equal to a second threshold, wherein the second threshold is an upper threshold of the analog gain of the spectral sensor;
• increase the analog gain of the spectral sensor based on the Clear value being less than or equal to the first threshold and the analog gain of the spectral sensor being less than the second threshold;
• reduce the analog gain of the spectral sensor based on the Clear value being greater than the first threshold and an exposure time of the spectral sensor being greater than or equal to a third threshold, wherein the third threshold is a lower threshold over the exposure time of the spectral sensor;
• shorten the exposure time of the spectral sensor based on the Clear value being greater than the first threshold and the exposure time of the spectral sensor being less than the third threshold;
• acquire a spectral data of a photographing environment output by the spectral sensor based on adjusted exposure parameters;
• convert a light signal obtained through a lens into an electrical signal through a photosensitive element of the electronic device;
• process the electrical signal to obtain an initial image;
• and
• perform white balance processing on the initial image based on the spectral data of the photographing environment to obtain a processed image.