Image acquisition apparatus and method for video conferencing, terminal, and storage medium

A terminal, comprising:

• an image acquisition apparatus comprising one wide-angle lens and a plurality of telephoto lenses, wherein the wide-angle lens is configured to obtain a first field-of-view area;
• and the plurality of telephoto lenses are arranged centrally symmetrically with respect to the wide-angle lens, wherein optical axes of the plurality of telephoto lenses and an optical axis of the wide-angle lens intersect at a same virtual optical center, and an absolute value of a difference between a second field-of-view area obtained by combining field-of-view areas of the plurality of telephoto lenses and the first field-of-view area is less than a field-of-view area threshold;
• and
• a housing comprising a cavity in which the image acquisition apparatus is mounted, wherein object-side ends of both the wide-angle lens and the telephoto lenses are outside the housing.

An image acquisition method based on an image acquisition apparatus comprising one wide-angle lens and a plurality of telephoto lenses, wherein the wide-angle lens is configured to obtain a first field-of-view area;

• and the plurality of telephoto lenses are arranged centrally symmetrically with respect to the wide-angle lens, wherein optical axes of the plurality of telephoto lenses and an optical axis of the wide-angle lens intersect at a same virtual optical center, and an absolute value of a difference between a second field-of-view area obtained by combining field-of-view areas of the plurality of telephoto lenses and the first field-of-view area is less than a field-of-view area threshold;
• the method comprising:
• determining an object to be focused in the first field-of-view area, and obtaining a distance between the object to be focused and the apparatus;
• and
• magnifying, by using the wide-angle lens, the object to be focused to generate a first focused image, in response to the distance between the object to be focused and the apparatus being less than a first distance threshold;
• first magnifying, by using the wide-angle lens, the object to be focused until a magnification power of the wide-angle lens reaches a first magnification power, and switching to a corresponding telephoto lens to continue to magnify the object to be focused to generate a second focused image, in response to the distance between the object to be focused and the apparatus being greater than or equal to the first distance threshold and less than a second distance threshold;
• or
• magnifying, by using the wide-angle lens and the telephoto lens in sequence, the object to be focused until a magnification power of the telephoto lens reaches a second magnification power, and performing digital magnification on the basis of a focused image generated by the telephoto lens to generate a third focused image, in response to the distance between the object to be focused and the apparatus being greater than or equal to the second distance threshold.