Zoom method and apparatus, unmanned aerial vehicle, unmanned aircraft system and storage medium

An unmanned aerial vehicle, comprising a vehicle body, vehicle arms connected to the vehicle body, power apparatuses disposed on the vehicle arms, an image capturing apparatus connected to the vehicle body and a vision chip disposed in the vehicle body, wherein the vision chip comprises:

• a memory and a processor, wherein
• the image capturing apparatus is electrically connected to the processor;
• the memory is configured to store a zoom program executable on a computer;
• and
• the processor is configured to invoke the zoom program executable on the computer to:
• control the image capturing apparatus to capture an initial image, wherein a resolution of the initial image is W0*H0 and an area of the initial image is S0;
• obtain a cropped image according to the initial image, wherein the cropped image is an image with an area of S cropped from a preset region in the initial image, S0/S=C and C is a digital zoom factor of the image capturing apparatus;
• and
• obtain a zoom image according to the cropped image, wherein the zoom image is an image obtained by zooming the cropped image by C/A times, a resolution of the zoom image is W1*H1, A=W0/W1, B=H0/H and C≤A;
• and storing the zoom image in the memory;
• wherein obtaining a cropped image according to the initial image, the method further comprising,
• if B>A, cropping X parts to the initial image to obtain the cropped image, and zooming out the cropped images by A times to obtain the zoom image with a width of W1 and a height of H1, X parts is upper and lower regions on two opposite sides of the initial image;
• if A>B, cropping Y parts to the initial image to obtain the cropped image, and zooming out the cropped images by B times to obtain the zoom image with a width of W1 and a height of H1, Y parts is left and right regions on two opposite sides of the initial image.

An unmanned aircraft system, comprising an unmanned aerial vehicle and a terminal device communicatively connected to the unmanned aerial vehicle, the unmanned aerial vehicle comprising a vehicle body, vehicle arms connected to the vehicle body, power apparatuses disposed on the vehicle arms, an image capturing apparatus connected to the vehicle body and a vision chip disposed in the vehicle body, wherein the vision chip comprises:

• at least one processor;
• and
• a memory, communicatively connected to the at least one processor, the memory storing instructions executable by the at least one processor, the instructions being executed by the at least one processor to cause the at least one processor to perform the following steps:
• controlling the image capturing apparatus to capture an initial image, wherein a resolution of the initial image is W0*H0 and an area of the initial image is S0;
• obtaining a cropped image according to the initial image, wherein the cropped image is an image with an area of S cropped from a preset region in the initial image, S0/S=C and C is a digital zoom factor of the image capturing apparatus;
• and
• obtaining a zoom image according to the cropped image, wherein the zoom image is an image obtained by zooming the cropped image by C/A times, a resolution of the zoom image is W1*H1, A=W0/W1, B=H0/H and C≤A;
• and storing the zoom image in the memory;
• wherein obtaining a cropped image according to the initial image, the method further comprising,
• if B>A, cropping X parts to the initial image to obtain the cropped image, and zooming out the cropped images by A times to obtain the zoom image with a width of W1 and a height of H1, X parts is upper and lower regions on two opposite sides of the initial image;
• if A>B, cropping Y parts to the initial image to obtain the cropped image, and zooming out the cropped images by B times to obtain the zoom image with a width of W1 and a height of H1, Y parts is left and right regions on two opposite sides of the initial image.