An image acquisition apparatus comprising: a moving member movable on a bearing surface; a lifting member provided on the moving member; and an image acquisition member movably connected to the lifting member, wherein the image acquisition member is movable in a first direction parallel to an axis of the lifting member and a second direction perpendicular to the first direction, wherein when the image acquisition member moves in the second direction perpendicular to the first direction, a distance between the image acquisition member and the lifting member is changed, wherein the moving member comprises: a controller configured to send a second instruction to the lifting member and a first instruction to the image acquisition member, wherein the lifting member is configured to move the image acquisition member in the first direction based on the second instruction, wherein the image acquisition member is movable in the second direction based on the first instruction, characterized in that the controller is configured to: receive a first image for a target object from the image acquisition member; and send the first instruction to the image acquisition member in response to determining that a mesh door exists in front of the target object based on the first image, wherein the image acquisition member is configured to: acquire, after moving in the second direction based on the first instruction, a second image for the target object; and send the second image to the controller, wherein the controller is configured to determine, based on the first image and the second image, feature information of the target object when the image acquisition member is at a current height. a moving member movable on a bearing surface; a lifting member provided on the moving member; and an image acquisition member movably connected to the lifting member, wherein the image acquisition member is movable in a first direction parallel to an axis of the lifting member and a second direction perpendicular to the first direction, wherein when the image acquisition member moves in the second direction perpendicular to the first direction, a distance between the image acquisition member and the lifting member is changed, wherein the moving member comprises: a controller configured to send a second instruction to the lifting member and a first instruction to the image acquisition member, wherein the lifting member is configured to move the image acquisition member in the first direction based on the second instruction, wherein the image acquisition member is movable in the second direction based on the first instruction, characterized in that the controller is configured to: receive a first image for a target object from the image acquisition member; and send the first instruction to the image acquisition member in response to determining that a mesh door exists in front of the target object based on the first image, wherein the image acquisition member is configured to: acquire, after moving in the second direction based on the first instruction, a second image for the target object; and send the second image to the controller, wherein the controller is configured to determine, based on the first image and the second image, feature information of the target object when the image acquisition member is at a current height. a controller configured to send a second instruction to the lifting member and a first instruction to the image acquisition member, wherein the lifting member is configured to move the image acquisition member in the first direction based on the second instruction, wherein the image acquisition member is movable in the second direction based on the first instruction, characterized in that the controller is configured to: receive a first image for a target object from the image acquisition member; and send the first instruction to the image acquisition member in response to determining that a mesh door exists in front of the target object based on the first image, wherein the image acquisition member is configured to: acquire, after moving in the second direction based on the first instruction, a second image for the target object; and send the second image to the controller, wherein the controller is configured to determine, based on the first image and the second image, feature information of the target object when the image acquisition member is at a current height. receive a first image for a target object from the image acquisition member; and send the first instruction to the image acquisition member in response to determining that a mesh door exists in front of the target object based on the first image, wherein the image acquisition member is configured to: acquire, after moving in the second direction based on the first instruction, a second image for the target object; and send the second image to the controller, wherein the controller is configured to determine, based on the first image and the second image, feature information of the target object when the image acquisition member is at a current height. acquire, after moving in the second direction based on the first instruction, a second image for the target object; and send the second image to the controller, wherein the controller is configured to determine, based on the first image and the second image, feature information of the target object when the image acquisition member is at a current height.