Photographing based on a target exposure parameter

An electronic device, comprising

• at least one processor;
• and
• one or more non-transitory computer-readable storage media coupled to the at least one processor and storing programming instructions for execution by the at least one processor, wherein the programming instructions, when executed, cause the electronic device to perform operations comprising:
• displaying a first image in a photographing interface, wherein the first image is a preview image captured for a first scene;
• determining, in response to a photographing operation of a user, whether the first scene is the same as a scene in previous photographing;
• when the first scene is the same as the scene in previous photographing, determining as a target exposure parameter, an exposure parameter used for previous photographing;
• and
• photographing the first scene based on the target exposure parameter, and wherein the operations comprise:
• determining, when the first scene is different from the scene in previous photographing, whether luminance of the first image meets a preset condition;
• and
• when the luminance of the first image meets the preset condition, determining, as the target exposure parameter, an exposure parameter used to generate the first image;
• or
• when the luminance of the first image does not meet the preset condition, adjusting an exposure parameter until luminance of a second image displayed by using the photographing interface meets the preset condition, and determining, as the target exposure parameter, an exposure parameter used to generate the second image, wherein
• the second image is another preview image captured for the first scene, the exposure parameter used to generate the first image is different from the exposure parameter used to generate the second image, the preset condition is that a difference between target luminance and current luminance is less than or equal to a first preset threshold and the target luminance is greater than or equal to the current luminance, the target luminance is actual luminance of the first scene, and the current luminance is luminance of a currently captured preview image.

A non-transitory computer-readable storage medium, configured to store a computer program, wherein the computer program comprises instructions that when executed by one or more processors, cause a computer to perform operations comprising:

• displaying a first image in a photographing interface, wherein the first image is a preview image captured for a first scene;
• determining, in response to a photographing operation of a user, whether the first scene is the same as a scene in previous photographing;
• when the first scene is the same as the scene in previous photographing, determining, as a target exposure parameter, an exposure parameter used for previous photographing;
• and
• photographing the first scene based on the target exposure parameter, and wherein the operations comprise:
• determining, when the first scene is different from the scene in previous photographing, whether luminance of the first image meets a preset condition;
• and
• when the luminance of the first image meets the preset condition, determining, as the target exposure parameter, an exposure parameter used to generate the first image;
• or
• when the luminance of the first image does not meet the preset condition, adjusting an exposure parameter until luminance of a second image displayed by using the photographing interface meets the preset condition, and determining, as the target exposure parameter, an exposure parameter used to generate the second image, wherein
• the second image is another preview image captured for the first scene, the exposure parameter used to generate the first image is different from the exposure parameter used to generate the second image, the preset condition is that a difference between target luminance and current luminance is less than or equal to a first preset threshold and the target luminance is greater than or equal to the current luminance, the target luminance is actual luminance of the first scene, and the current luminance is luminance of a currently captured preview image.