Identification method and apparatus, device, medium and product

An electronic device, comprising:

• a processor and a memory;
• wherein the memory is used for storing instructions or computer programs;
• and
• wherein the processor is used to execute the instructions or the computer programs stored in the memory, to cause the electronic device to
• obtain an image of a face including a target part;
• transform the image of the face into a first image space according to a first transformation matrix to obtain a first transformed image, and transform the image of the face into a second image space according to a second transformation matrix to obtain a second transformed image, wherein the first transformation matrix is determined based on facial key points of the image of the face and key points of the first image space, the key points of the first image space are used for describing cropping constraints of the face, the facial key points include key points of the target part, the second transformation matrix is determined based on key points of the target part and key points of the second image space, the key points of the second image space are used for describing cropping constraints of the target part, and a pixel ratio of the target part in the second transformed image is higher than a pixel ratio of the target part in the first transformed image;
• and
• determine an identification result for a visible area of the face and an identification result for a visible area of the target part based on the first transformed image, the first transformation matrix, the second transformed image, and the second transformation matrix.

A non-transitory computer-readable medium stored with instructions or computer programs, wherein the instructions or computer programs, when running on a device, cause the device to:

• obtain an image of a face including a target part;
• transform the image of the face into a first image space according to a first transformation matrix to obtain a first transformed image, and transform the image of the face into a second image space according to a second transformation matrix to obtain a second transformed image, wherein the first transformation matrix is determined based on facial key points of the image of the face and key points of the first image space, the key points of the first image space are used for describing cropping constraints of the face, the facial key points include key points of the target part, the second transformation matrix is determined based on key points of the target part and key points of the second image space, the key points of the second image space are used for describing cropping constraints of the target part, and a pixel ratio of the target part in the second transformed image is higher than a pixel ratio of the target part in the first transformed image;
• and
• determine an identification result for a visible area of the face and an identification result for a visible area of the target part based on the first transformed image, the first transformation matrix, the second transformed image, and the second transformation matrix.