Image color adjustment method and apparatus and unmanned aerial vehicle

An image color adjustment apparatus, applied to an image collection device of a UAV, the apparatus comprising:

• at least one processor;
• and a memory, communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, where execution of the instructions by the at least one processor causes the at least one processor to:
• determine a current photographing parameter of the image collection device during collection of a to-be-processed image, wherein the current photographing parameter comprises a current exposure and a current color temperature;
• select, according to the current exposure and the current color temperature, an optimal color channel gain matching the current exposure and the current color temperature;
• and
• adjust a color of the to-be-processed image according to the optimal color channel gain;
• the processor is further configured to:
• determine, as a target color temperature index interval, a candidate color temperature index interval comprising the current color temperature;
• wherein the candidate color temperature index interval corresponds to at least two candidate exposures, and each of the at least two candidate exposures corresponds to one candidate color channel gain;
• determine, as a target exposure, a candidate exposure matching the current exposure from the at least two candidate exposures corresponding to the target color temperature index interval;
• and
• select, as the optimal color channel gain, a candidate color channel gain corresponding to the target exposure.

A UAV, comprising:

• a fuselage;
• an arm, connected to the fuselage;
• a power apparatus, disposed on the arm;
• and
• an image collection device, connected to the fuselage, wherein
• the image collection device comprises:
• at least one processor;
• and
• a memory, communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, where execution of the instructions by the at least one processor causes the at least one processor to:
• determine a current photographing parameter of the image collection device during collection of a to-be-processed image, wherein the current photographing parameter comprises a current exposure and a current color temperature;
• select, according to the current exposure and the current color temperature, an optimal color channel gain matching the current exposure and the current color temperature;
• and
• adjust a color of the to-be-processed image according to the optimal color channel gain;
• the processor is further configured to:
• determine, as a target color temperature index interval, a candidate color temperature index interval comprising the current color temperature;
• wherein the candidate color temperature index interval corresponds to at least two candidate exposures, and each of the at least two candidate exposures corresponds to one candidate color channel gain;
• determine, as a target exposure, a candidate exposure matching the current exposure from the at least two candidate exposures corresponding to the target color temperature index interval;
• and
• select, as the optimal color channel gain, a candidate color channel gain corresponding to the target exposure.