Image display method and device, and electronic device

1. A computer-implemented method, comprising:

displaying, by an end-user device with a facial recognition system, a facial image at a first size, wherein the facial image is captured by at least one camera of the end-user device, wherein the first size is a default size, and wherein the at least one camera comprises at least one of a rotary camera or a flip camera;

obtaining, by the end-user device, a distance between the end-user device and a human face associated with the facial image;

determining, by the end-user device, a second size based on the distance and a screen size of the end-user device, wherein determining the second size based on the distance comprises:

inputting, by the end-user device, the distance into a calculation model; and

obtaining, by the end-user device, an output of the calculation model as the second size; and

displaying, by the end-user device, the facial image at the second size determined in accordance with (i) the distance and (ii) the screen size of the end-user device, wherein the second size is different from the first size, and wherein displaying the facial image at the second size comprises at least one of:

automatically increasing the displayed facial image at the first size to the second size if the second size is greater than the first size;

automatically decreasing the displayed facial image at the first size to the second size if the second size is less than the first size; or

maintaining the displayed facial image at the first size if the second size equals to the first size.

2. The computer-implemented method of claim 1 , wherein the end-user device comprises a distance sensor, and the distance between the end-user device and the human face is detected by the distance sensor.

3. The computer-implemented method of claim 2 , wherein obtaining the distance between the end-user device and the human face comprises:

emitting, by the distance sensor, an infrared ray at a first time;

receiving, by the distance sensor, a reflection of the infrared ray from the human face at a second time; and

determining the distance between the end-user device and the human face based on a time difference between the first time and the second time.

4. The computer-implemented method of claim 1 , wherein a third-party detection device having a short-range wireless connection to the end-user device detects the distance between the end-user device and the human face, and obtaining the distance between the end-user device and the human face comprises:

receiving, by the end-user device and from the third-party detection device, the distance between the end-user device and the human face through the short-range wireless connection, wherein the short-range wireless connection comprises one of Bluetooth, infrared, a wireless local area network, Wi-Fi, ultra-wideband communication, ZigBee, and near field communication.

5. The computer-implemented method of claim 1 , further comprising:

performing facial recognition on the displayed facial image at the second size.

6. A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

displaying, by an end-user device with a facial recognition system, a facial image at a first size, wherein the facial image is captured by at least one camera of the end-user device, wherein the first size is a default size, and wherein the at least one camera comprises at least one of a rotary camera or a flip camera;

obtaining, by the end-user device, a distance between the end-user device and a human face associated with the facial image;

determining, by the end-user device, a second size based on the distance and a screen size of the end-user device, wherein determining the second size based on the distance comprises:

inputting, by the end-user device, the distance into a calculation model; and

obtaining, by the end-user device, an output of the calculation model as the second size; and

displaying, by the end-user device, the facial image at the second size determined in accordance with (i) the distance and (ii) the screen size of the end-user device, wherein the second size is different from the first size, and wherein displaying the facial image at the second size comprises at least one of:

automatically increasing the displayed facial image at the first size to the second size if the second size is greater than the first size;

automatically decreasing the displayed facial image at the first size to the second size if the second size is less than the first size; or

maintaining the displayed facial image at the first size if the second size equals to the first size.

7. The non-transitory, computer-readable medium of claim 6 , wherein the end-user device comprises a distance sensor, and the distance between the end-user device and the human face is detected by the distance sensor.

8. The non-transitory, computer-readable medium of claim 7 , wherein obtaining the distance between the end-user device and the human face comprises:

emitting, by the distance sensor, an infrared ray at a first time;

receiving, by the distance sensor, a reflection of the infrared ray from the human face at a second time; and

determining the distance between the end-user device and the human face based on a time difference between the first time and the second time.

9. The non-transitory, computer-readable medium of claim 6 , wherein a third-party detection device having a short-range wireless connection to the end-user device detects the distance between the end-user device and the human face, and obtaining the distance between the end-user device and the human face comprises:

receiving, by the end-user device and from the third-party detection device, the distance between the end-user device and the human face through the short-range wireless connection, wherein the short-range wireless connection comprises one of Bluetooth, infrared, a wireless local area network, Wi-Fi, ultra-wideband communication, ZigBee, and near field communication.

10. The non-transitory, computer-readable medium of claim 6 , the operations further comprising:

performing facial recognition on the displayed facial image at the second size.

11. A computer-implemented system, comprising:

one or more computers; and

one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising:

displaying, by an end-user device with a facial recognition system, a facial image at a first size, wherein the facial image is captured by at least one camera of the end-user device, wherein the first size is a default size, and wherein the at least one camera comprises at least one of a rotary camera or a flip camera;

obtaining, by the end-user device, a distance between the end-user device and a human face associated with the facial image;

determining, by the end-user device, a second size based on the distance and a screen size of the end-user device, wherein determining the second size based on the distance comprises:

inputting, by the end-user device, the distance into a calculation model; and

obtaining, by the end-user device, an output of the calculation model as the second size; and

displaying, by the end-user device, the facial image at the second size determined in accordance with (i) the distance and (ii) the screen size of the end-user device, and wherein displaying the facial image at the second size comprises at least one of:

automatically increasing the displayed facial image at the first size to the second size if the second size is greater than the first size;

automatically decreasing the displayed facial image at the first size to the second size if the second size is less than the first size; or

maintaining the displayed facial image at the first size if the second size equals to the first size.

12. The computer-implemented system of claim 11 , wherein the end-user device comprises a distance sensor, and the distance between the end-user device and the human face is detected by the distance sensor.

13. The computer-implemented system of claim 12 , wherein obtaining the distance between the end-user device and the human face comprises:

emitting, by the distance sensor, an infrared ray at a first time;

receiving, by the distance sensor, a reflection of the infrared ray from the human face at a second time; and

determining the distance between the end-user device and the human face based on a time difference between the first time and the second time.

14. The computer-implemented system of claim 11 , the one or more operations further comprising:

performing facial recognition on the displayed facial image at the second size.

15. The computer-implemented method of claim 1 , wherein the calculation model is obtained through data training.

16. The computer-implemented method of claim 1 , wherein the calculation model is provided by a server to the end-user device.

17. The computer-implemented system of claim 11 , wherein a third-party detection device having a short-range wireless connection to the end-user device detects the distance between the end-user device and the human face, and obtaining the distance between the end-user device and the human face comprises:

receiving, by the end-user device and from the third-party detection device, the distance between the end-user device and the human face through the short-range wireless connection, wherein the short-range wireless connection comprises one of Bluetooth, infrared, a wireless local area network, Wi-Fi, ultra-wideband communication, ZigBee, and near field communication.