CN-121985218-A - Wide-angle and long-focus collaborative shooting control method and system

CN121985218ACN 121985218 ACN121985218 ACN 121985218ACN-121985218-A

Abstract

The invention provides a wide-angle and long-focus collaborative shooting control method and a system, which are used for identifying a wide-angle image shot at a wide-angle shooting end, determining an abnormal picture area of the wide-angle image, determining an unreliable view field shooting area of the wide-angle shooting end based on the outline characteristics of the abnormal picture area, calibrating an area of shooting defocus generated by the wide-angle shooting end due to overlarge distance in a real environment, limiting a space range for subsequent long-focus shooting, waking up at least one long-focus shooting end capable of shooting the unreliable view field shooting area based on the relative position relation between the unreliable view field shooting area and the wide-angle shooting end, adjusting the shooting state of the long-focus shooting end, realizing long-focus accurate shooting of a local area, fusing the long-focus image shot at the long-focus shooting end to the wide-angle image, obtaining an integrated image, taking into consideration of large-area shooting and fine shooting of a long-distance object, and providing a large-range and large-depth image about the real environment.

Inventors

YU DAN
WANG DANXING
JIANG ZHENG

Assignees

慧之安信息技术股份有限公司

Dates

Publication Date: 20260505
Application Date: 20251225

Claims (10)

1. The wide-angle and long-focus collaborative shooting control method is characterized by comprising the following steps: identifying a wide-angle image shot by a wide-angle shooting end, and determining an abnormal picture area of the wide-angle image; based on the relative position relation between the unreliable view field shooting area and the wide-angle shooting end, waking up at least one long-focus shooting end capable of shooting the unreliable view field shooting area; And fusing the long-focus image shot by the at least one long-focus shooting end to the wide-angle image to obtain an integrated image.
2. The wide-angle and tele collaborative imaging control method according to claim 1, wherein: The method for determining the unreliable field of view shooting area of the wide-angle camera end comprises the steps of identifying the wide-angle image shot by the wide-angle camera end, determining an abnormal picture area of the wide-angle image, and determining the unreliable field of view shooting area of the wide-angle camera end based on the outline characteristics of the abnormal picture area, wherein the method comprises the following steps: Based on the jitter duration interval, screening wide-angle images which are not interfered by jitter from all wide-angle images shot by the wide-angle shooting end; Performing picture clear state identification on the wide-angle image which is not interfered by jitter, and determining a picture defocusing area of the wide-angle image; And determining an unreliable view field shooting area of the wide-angle shooting end to the real environment based on the boundary contour feature and the transformation relation between a shooting space coordinate system of the wide-angle shooting end and a space coordinate system of the real environment.
3. The wide-angle and tele collaborative imaging control method according to claim 1, wherein: based on the relative position relation between the unreliable visual field shooting area and the wide-angle shooting end, waking up at least one long-focus shooting end capable of shooting the unreliable visual field shooting area, and based on the spatial distribution characteristics of the unreliable visual field shooting area, adjusting the shooting state of the at least one long-focus shooting end, wherein the method comprises the following steps: Acquiring a relative distance and a relative position between the unreliable field shooting area and the wide-angle shooting end, comparing the relative distance and the relative position with respective shooting focal length ranges and shooting view angle ranges of all long-focus shooting ends adjacent to the wide-angle shooting end, determining at least one long-focus shooting end capable of shooting the unreliable field shooting area, and sending a wake-up instruction to the at least one long-focus shooting end; and adjusting the shooting focal length of the at least one long-focus shooting end on the unreliable field shooting area based on the spatial distribution depth of field characteristic of the unreliable field shooting area in the real environment.
4. The wide-angle and tele collaborative imaging control method according to claim 1, wherein: Fusing the long-focus image shot by the at least one long-focus shooting end to the wide-angle image to obtain an integrated image, wherein the method comprises the following steps of: performing image definition identification on all the long-focus images shot by the at least one long-focus shooting end, and determining a long-focus image with optimal image definition; Based on the boundary contour features and the region sizes of the abnormal picture regions in the wide-angle image, cutting and scaling the long-focus image with the optimal image definition, and fusing the long-focus image with the optimal image definition into the wide-angle image to obtain an integrated image.
5. The wide-angle and tele collaborative imaging control method according to claim 4, wherein: image definition identification is carried out on all the long-focus images shot by the at least one long-focus shooting end, and the long-focus image with the optimal image definition is determined, which comprises the following steps: The reference ISO sensitivity corresponding to the long-focus camera end and the actual ISO sensitivity of the long-focus camera end are adjusted; obtaining a sensitivity influence parameter in= ISOs/ISO by using the reference ISO sensitivity and the actual ISO sensitivity of the long-focus imaging end, wherein ISOs represents the actual ISO sensitivity of the long-focus imaging end; The method comprises the steps of calling an actual aperture value corresponding to a tele camera end and a preset tele end optimal sharpness aperture; acquiring aperture influence parameters by using an actual aperture value corresponding to the tele camera end and a preset tele end optimal sharpness aperture; Wherein the aperture influence parameter is obtained by the following formula: fn represents an aperture influence parameter, fs represents an actual aperture value corresponding to a tele imaging end, F0 represents a preset tele end optimal sharpness aperture acquisition aperture influence parameter; The method comprises the steps of adjusting an actual shooting focal length corresponding to a long-focus shooting end and an optimal focusing distance that the focal length is closer to the long-focus end, and acquiring focal length influence parameters by utilizing the actual shooting focal length corresponding to the long-focus shooting end and the optimal focusing distance that the focal length is closer to the long-focus end; the focal length influence parameter is obtained through the following formula: Wherein fn represents a focal length influencing parameter, fs represents an actual shooting focal length corresponding to a tele shooting end, fx represents an optimal focusing distance that the focal length is closer to the tele end, S represents a shutter speed corresponding to the current tele shooting end, and S 0 represents a reference shutter speed of ideal definition of the tele end; The sensitivity influence parameter, the aperture influence parameter and the focal length influence parameter are called to obtain a definition judgment coefficient of the long-focus image; the definition judgment coefficient is obtained through the following formula: wherein L represents a definition judgment coefficient, w 01 、w 02 and w 03 respectively represent weight values corresponding to a sensitivity influence parameter, an aperture influence parameter and a focal length influence parameter, P represents gray entropy after normalization processing of a tele image, sigma represents gray standard deviation after normalization processing of the tele image, and Z represents noise variance after normalization processing of the tele image; and taking the long-focus image corresponding to the maximum value of the definition judgment coefficient as the long-focus image with the optimal image definition.
6. Wide angle and long burnt collaborative shooting control system, its characterized in that includes: The wide-angle image recognition module is used for recognizing a wide-angle image shot by the wide-angle shooting end and determining an abnormal picture area of the wide-angle image; An untrusted field shooting region determining module, configured to determine an untrusted field shooting region of the wide-angle imaging end based on the contour feature of the abnormal image region; the long-focus camera end awakening module is used for awakening at least one long-focus camera end capable of shooting the untrusted view field shooting area based on the relative position relationship between the untrusted view field shooting area and the wide-angle camera end; The long-focus shooting adjustment module is used for adjusting the shooting state of the at least one long-focus shooting end based on the spatial distribution characteristics of the unreliable visual field shooting area; And the image fusion module is used for fusing the long-focus image shot by the at least one long-focus shooting end to the wide-angle image to obtain an integrated image.
7. The wide-angle and tele collaborative camera control system according to claim 6, wherein: the wide-angle image recognition module is used for recognizing a wide-angle image shot by a wide-angle shooting end, determining an abnormal picture area of the wide-angle image, and comprises the following components: Based on the jitter duration interval, screening wide-angle images which are not interfered by jitter from all wide-angle images shot by the wide-angle shooting end; Performing picture clear state identification on the wide-angle image which is not interfered by jitter, and determining a picture defocusing area of the wide-angle image; the untrusted field of view shooting region determining module is configured to determine an untrusted field of view shooting region of the wide-angle imaging end based on the contour feature of the abnormal image region, and includes: And determining an unreliable view field shooting area of the wide-angle shooting end to the real environment based on the boundary contour feature and the transformation relation between a shooting space coordinate system of the wide-angle shooting end and a space coordinate system of the real environment.
8. The wide-angle and tele collaborative camera control system according to claim 6, wherein: the long-focus camera end awakening module is used for awakening at least one long-focus camera end capable of shooting the untrusted view field shooting area based on the relative position relation between the untrusted view field shooting area and the wide-angle camera end, and comprises the following components: Acquiring a relative distance and a relative position between the unreliable field shooting area and the wide-angle shooting end, comparing the relative distance and the relative position with respective shooting focal length ranges and shooting view angle ranges of all long-focus shooting ends adjacent to the wide-angle shooting end, determining at least one long-focus shooting end capable of shooting the unreliable field shooting area, and sending a wake-up instruction to the at least one long-focus shooting end; The long-focus camera shooting adjustment module is used for adjusting the shooting state of the at least one long-focus camera shooting end based on the spatial distribution characteristics of the unreliable visual field shooting area, and comprises the following steps: and adjusting the shooting focal length of the at least one long-focus shooting end on the unreliable field shooting area based on the spatial distribution depth of field characteristic of the unreliable field shooting area in the real environment.
9. The wide-angle and tele collaborative camera control system according to claim 6, wherein: the image fusion module is used for fusing the long-focus image shot by the at least one long-focus shooting end to the wide-angle image to obtain an integrated image, and comprises the following steps: performing image definition identification on all the long-focus images shot by the at least one long-focus shooting end, and determining a long-focus image with optimal image definition; Based on the boundary contour features and the region sizes of the abnormal picture regions in the wide-angle image, cutting and scaling the long-focus image with the optimal image definition, and fusing the long-focus image with the optimal image definition into the wide-angle image to obtain an integrated image.
10. The wide-angle and tele collaborative camera control system according to claim 9, wherein: image definition identification is carried out on all the long-focus images shot by the at least one long-focus shooting end, and the long-focus image with the optimal image definition is determined, which comprises the following steps: The reference ISO sensitivity corresponding to the long-focus camera end and the actual ISO sensitivity of the long-focus camera end are adjusted; obtaining a sensitivity influence parameter in= ISOs/ISO by using the reference ISO sensitivity and the actual ISO sensitivity of the long-focus imaging end, wherein ISOs represents the actual ISO sensitivity of the long-focus imaging end; The method comprises the steps of calling an actual aperture value corresponding to a tele camera end and a preset tele end optimal sharpness aperture; acquiring aperture influence parameters by using an actual aperture value corresponding to the tele camera end and a preset tele end optimal sharpness aperture; Wherein the aperture influence parameter is obtained by the following formula: fn represents an aperture influence parameter, fs represents an actual aperture value corresponding to a tele imaging end, F0 represents a preset tele end optimal sharpness aperture acquisition aperture influence parameter; The method comprises the steps of adjusting an actual shooting focal length corresponding to a long-focus shooting end and an optimal focusing distance that the focal length is closer to the long-focus end, and acquiring focal length influence parameters by utilizing the actual shooting focal length corresponding to the long-focus shooting end and the optimal focusing distance that the focal length is closer to the long-focus end; the focal length influence parameter is obtained through the following formula: Wherein fn represents a focal length influencing parameter, fs represents an actual shooting focal length corresponding to a tele shooting end, fx represents an optimal focusing distance that the focal length is closer to the tele end, S represents a shutter speed corresponding to the current tele shooting end, and S 0 represents a reference shutter speed of ideal definition of the tele end; The sensitivity influence parameter, the aperture influence parameter and the focal length influence parameter are called to obtain a definition judgment coefficient of the long-focus image; the definition judgment coefficient is obtained through the following formula: wherein L represents a definition judgment coefficient, w 01 、w 02 and w 03 respectively represent weight values corresponding to a sensitivity influence parameter, an aperture influence parameter and a focal length influence parameter, P represents gray entropy after normalization processing of a tele image, sigma represents gray standard deviation after normalization processing of the tele image, and Z represents noise variance after normalization processing of the tele image; and taking the long-focus image corresponding to the maximum value of the definition judgment coefficient as the long-focus image with the optimal image definition.

Description

Wide-angle and long-focus collaborative shooting control method and system Technical Field The invention relates to the field of image shooting, in particular to a wide-angle and long-focus collaborative shooting control method and system. Background Image monitoring has become a major means of live-action monitoring, and a single camera is typically arranged to capture a target area. Although the existing camera can perform zoom shooting, the camera can only perform wide-angle shooting or long-focus shooting at the same time, and in view of insufficient shooting resolution of wide-angle shooting on a remote object and small field of view range of long-focus shooting, large-range shooting cannot be realized, in an actual monitoring process, the camera is usually set to be in a wide-angle shooting mode, so that large-area shooting of a target area is preferentially ensured. If a certain long-distance object in the target area needs to be accurately shot, the camera is switched to a long-focus shooting mode, so that the corresponding object is visually identified in a small range. Therefore, the existing mode of adopting a camera to perform image monitoring cannot take the advantages of wide angle and long-focus shooting into consideration, cannot take the fine shooting of a long-distance object in a target area while performing large-area shooting on the target area, cannot provide large-range and large-depth images about the target area, and reduces the reliability and accuracy of image monitoring. Disclosure of Invention The invention aims to provide a wide-angle and long-focus collaborative shooting control method and system, which are used for identifying a wide-angle image shot at a wide-angle shooting end, determining an abnormal picture area of the wide-angle image, determining an unreliable view field shooting area of the wide-angle shooting end based on the outline characteristics of the abnormal picture area, calibrating an area of shooting defocus generated by the wide-angle shooting end due to overlarge distance in a real environment, limiting a space range for subsequent long-focus shooting, waking up at least one long-focus shooting end capable of shooting the unreliable view field shooting area based on the relative position relation between the unreliable view field shooting area and the wide-angle shooting end, adjusting the shooting state of the long-focus shooting end, realizing long-focus accurate shooting of a local area, fusing the long-focus image shot at least one long-focus shooting end to the wide-angle image, obtaining an integrated image, carrying out large-area shooting and fine shooting on a long-distance object, providing a large-area and a large-depth image about the real environment, and improving the reliability and accuracy of image monitoring. The invention is realized by the following technical scheme: The wide-angle and long-focus collaborative shooting control method comprises the following steps: identifying a wide-angle image shot by a wide-angle shooting end, and determining an abnormal picture area of the wide-angle image; based on the relative position relation between the unreliable view field shooting area and the wide-angle shooting end, waking up at least one long-focus shooting end capable of shooting the unreliable view field shooting area; And fusing the long-focus image shot by the at least one long-focus shooting end to the wide-angle image to obtain an integrated image. Optionally, identifying the wide-angle image shot by the wide-angle camera end, determining an abnormal picture area of the wide-angle image, and determining an unreliable field shooting area of the wide-angle camera end based on the outline characteristics of the abnormal picture area comprises the following steps: Based on the jitter duration interval, screening wide-angle images which are not interfered by jitter from all wide-angle images shot by the wide-angle shooting end; Performing picture clear state identification on the wide-angle image which is not interfered by jitter, and determining a picture defocusing area of the wide-angle image; And determining an unreliable view field shooting area of the wide-angle shooting end to the real environment based on the boundary contour feature and the transformation relation between a shooting space coordinate system of the wide-angle shooting end and a space coordinate system of the real environment. Optionally, based on the relative positional relationship between the untrusted field of view shooting area and the wide-angle shooting end, waking up at least one tele shooting end capable of shooting the untrusted field of view shooting area, and based on the spatial distribution characteristics of the untrusted field of view shooting area, adjusting the shooting state of the at least one tele shooting end, including: Acquiring a relative distance and a relative position between the unreliable field shooting area and the wide-angle shooting