CN111970454B - Shot picture display method, device, equipment and storage medium - Google Patents
Shot picture display method, device, equipment and storage medium Download PDFInfo
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- CN111970454B CN111970454B CN202010947231.9A CN202010947231A CN111970454B CN 111970454 B CN111970454 B CN 111970454B CN 202010947231 A CN202010947231 A CN 202010947231A CN 111970454 B CN111970454 B CN 111970454B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
- H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/633—Control of cameras or camera modules by using electronic viewfinders for displaying additional information relating to control or operation of the camera
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Abstract
The embodiment of the invention discloses a method, a device, equipment and a storage medium for displaying a shot picture, wherein the method comprises the following steps: acquiring a shooting picture through a shooting component of a shooting device, and displaying the shooting picture in a display screen; and presenting a virtual scale matched with the shot picture in the display screen, and determining the scale information of the virtual scale according to a first distance between the camera shooting component and a target object in the shot picture, the focal length of the camera shooting component, the scale point information matched with the camera shooting component, the total number of pixels of the camera shooting component and the unit pixel size of the camera shooting component. According to the technical scheme provided by the embodiment of the invention, a user can intuitively know the actual shooting range through the shot picture, and meanwhile, the virtual scale also provides a measuring basis for the user to measure the horizontal distance and/or the vertical distance of each area in the shot picture, so that the remote measurement is realized, and the measurement efficiency of the measurement operation is improved.
Description
Technical Field
The present invention relates to image processing technologies, and in particular, to a method, an apparatus, a device, and a storage medium for displaying a captured image.
Background
With the continuous progress of science and technology, the field of underwater application equipment is rapidly developed, people are full of exploration interest in the underwater world, and higher requirements are put forward for the measurement of underwater objects.
At present, the existing underwater robot usually adopts a two-point laser measurement mode, that is, two fixed laser emitting devices emit detection lasers, an observer roughly judges the size information of an object by watching the positions of the detection lasers mapped on a picture, and when accurate measurement is needed, the underwater robot needs to move back and forth, so that the two laser points are exactly hit on the edge of the object to be measured.
The above mode is complex to operate in practical application, has extremely high requirements on the control precision of the underwater robot, has the measurement size influenced by the laser irradiation range, can only detect the target object within the laser irradiation range, cannot measure the size information of the target object once the target object is not within the laser irradiation range, and has great limitation.
Disclosure of Invention
The embodiment of the invention provides a display method, a device, equipment and a storage medium of a shot picture, which are used for displaying a virtual scale in the shot picture and marking scale information of the virtual scale.
In a first aspect, an embodiment of the present invention provides a shot picture displaying method, including:
acquiring a shooting picture through a shooting component of a shooting device, and displaying the shooting picture in a display screen;
displaying a virtual scale matched with the shot picture in the display screen, and determining scale information of the virtual scale according to a first distance between the camera shooting assembly and a target object in the shot picture, a focal length of the camera shooting assembly, scale point information matched with the camera shooting assembly, the total number of pixels of the camera shooting assembly and the unit pixel size of the camera shooting assembly; wherein the calibration point information includes a second distance between the calibration point and the camera assembly.
In a second aspect, an embodiment of the present invention provides a display apparatus for shot pictures, including:
the shooting picture acquisition module is used for acquiring a shooting picture through a shooting component of the shooting device and displaying the shooting picture in the display screen;
the virtual scale acquisition module is used for presenting a virtual scale matched with the shot picture in the display screen and determining the scale information of the virtual scale according to the first distance between the camera shooting assembly and a target object in the shot picture, the focal length of the camera shooting assembly, the calibration point information matched with the camera shooting assembly, the total number of pixels of the camera shooting assembly and the unit pixel size of the camera shooting assembly; wherein the calibration point information includes a second distance between the calibration point and the camera assembly.
In a third aspect, an embodiment of the present invention further provides an apparatus, where the apparatus includes:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for displaying a shot picture provided by any embodiment of the invention.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for displaying a captured picture according to any embodiment of the present invention.
According to the technical scheme provided by the embodiment of the invention, after the shooting picture is obtained through the camera shooting assembly of the shooting device and displayed in the display screen, the virtual scale matched with the shooting interface is displayed on the display interface, and the scale information of the virtual scale is determined according to the shooting range of the shooting picture, so that a user can visually know the actual shooting range through the shooting picture, meanwhile, the virtual scale also provides a measuring basis for the user to measure the horizontal distance and the vertical distance of each area in the shooting picture, and the measuring efficiency of the measuring operation is improved while the remote measurement is realized.
Drawings
Fig. 1A is a flowchart of a method for displaying a shot picture according to an embodiment of the present invention;
fig. 1B is a schematic diagram illustrating a captured image according to an embodiment of the present invention;
fig. 1C is a schematic diagram illustrating another shot picture according to an embodiment of the present invention;
fig. 1D is a schematic diagram illustrating another shot picture according to an embodiment of the present invention;
fig. 1E is a schematic diagram illustrating another captured image according to an embodiment of the present invention;
fig. 1F is a schematic diagram illustrating another captured image according to an embodiment of the present invention;
fig. 1G is a schematic diagram illustrating another captured image according to an embodiment of the present invention;
fig. 1H is a schematic diagram illustrating another captured image according to an embodiment of the present invention;
fig. 2 is a flowchart of a shot picture displaying method according to a second embodiment of the present invention;
fig. 3 is a block diagram of a display apparatus for shot pictures according to a third embodiment of the present invention;
fig. 4 is a block diagram of a device according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
Example one
Fig. 1A is a flowchart of a method for displaying a captured picture according to an embodiment of the present invention, where this embodiment is applicable to a case where a virtual ruler matched with a captured picture is presented when the captured picture of a camera module is displayed on a display screen, and the method may be executed by a display device for capturing a picture, where the apparatus may be implemented by hardware and/or software and integrated in a terminal device or a server having a display screen, and the method specifically includes the following steps:
and S110, acquiring a shooting picture through a shooting component of the shooting device, and displaying the shooting picture in a display screen.
The shooting device is a terminal device with a shooting function, such as an underwater shooting robot, acquires a current shooting picture through the shooting component, and sends the shooting picture to a corresponding terminal device (such as a background control terminal of the underwater shooting robot), and the terminal device is displayed through the display screen, so that a user can visually and clearly observe the shooting picture. The camera component can comprise a camera sensor such as an image sensor and the like, converts a light image on the light-sensitive surface into an electric signal in a corresponding proportional relation with the light image by utilizing the photoelectric conversion function of the photoelectric device, and sends the electric signal to the background terminal equipment, and can also be a camera with video camera and still image capture functions; particularly, the shooting device can send the shot pictures to the terminal equipment in real time so that the terminal equipment synchronously displays the current shot pictures, can also store the shot pictures in a picture or video format, and sends the shot pictures to the terminal equipment after shooting is finished so as to ensure the transmission quality of the shot pictures; in the embodiment of the present invention, the type of the shooting device, the type of the shooting assembly, and the transmission mode of the shot picture are not particularly limited.
S120, presenting a virtual scale matched with the shot picture in the display screen, and determining scale information of the virtual scale according to a first distance between the camera shooting assembly and a target object in the shot picture, a focal length of the camera shooting assembly, scale point information matched with the camera shooting assembly, the total number of pixels of the camera shooting assembly and the unit pixel size of the camera shooting assembly; the calibration point information includes a second distance between the calibration point and the camera assembly.
The first distance between the camera shooting assembly and the target object in the shot picture can be acquired through the distance sensor in the shooting device, and meanwhile, in order to ensure the first distance between the camera shooting assembly and the target object, the distance value detected by the distance sensor is consistent, the distance sensor can be installed near the camera shooting assembly and is located in the same plane with the camera shooting assembly.
The focal length of the camera shooting assembly is the distance from an optical rear principal point of a lens in the camera shooting assembly to a focal point, and is an important index for measuring the performance of the camera shooting assembly. The length of the focal length of the lens determines the imaging size, the field angle size, the depth of field and the perspective strength of the picture. When the same shot target is shot at the same position, the longer the focal length of the lens is, the larger the image is, and the shorter the focal length of the lens is, the smaller the image is; the focal length of the lens is typically in the range of 8mm to 2500 mm. In the embodiment of the present invention, the focal length size included in the image pickup assembly is not particularly limited.
The calibration point is a preset reference point, and the second distance between the calibration point and the camera shooting component can be a horizontal distance or a vertical distance; the calibration point may be located in the camera assembly, for example, an internal point of the camera assembly, which is located at a horizontal distance of 1 mm or a vertical distance of 1 mm from a center point of the camera assembly, is set as the calibration point, that is, a second distance between the calibration point and the camera assembly is 1 mm; the calibration point may also be located near the camera component, for example, a laser emitter is disposed at a position 5 cm away from the center point of the camera component horizontally or 5 cm away vertically, and the laser emitter is used as the calibration point, so that the distance from the laser emitter to the center point of the camera component is a second distance (i.e., 5 cm), where the laser emitter is used to emit laser light at the beginning of shooting; the laser emitted by the laser emitter has a corresponding imaging point in the shot picture.
Pixels (pixels) are units of measure in digital images, are small squares in an image to which certain position and color values are assigned, and are also the smallest unit elements in the image, and generally represent the size of the resolution of the image in terms of Pixel density (PPI), i.e., the number of pixels per inch; the total number of pixels, i.e., the number of pixels in the resolution, includes the total number of horizontal pixels and the total number of vertical pixels, for example, in a camera module with a resolution of 640 × 480, then the corresponding total number of horizontal pixels is 640 and the corresponding total number of vertical pixels is 480. If the second distance between the calibration point and the camera shooting component is the horizontal direction distance, the total number of pixels is the total number of transverse pixels correspondingly; if the second distance between the calibration point and the camera assembly is the vertical distance, the total number of pixels is the total number of longitudinal pixels correspondingly. The unit pixel size of the camera shooting assembly refers to the distance from the center of a certain pixel in the camera shooting assembly to the center of an adjacent pixel, and can be obtained according to shooting parameters of the camera shooting assembly, if the unit pixel size is small, an image needs to be drawn through more pixel points, and then a finer image is obtained.
The first distance between the camera shooting assembly and a target object in a shooting picture, the unit pixel size of the camera shooting assembly, the total number of pixels of the camera shooting assembly and the virtual scale are in inverse proportion; the focal length of the camera shooting assembly and the second distance of the calibration point matched with the camera shooting assembly in the shooting picture are in direct proportion to the virtual scale.
Optionally, in this embodiment of the present invention, determining the scale information of the virtual scale according to the first distance between the camera shooting assembly and the target object in the shooting picture, the focal length of the camera shooting assembly, the calibration point information matched with the camera shooting assembly, the total number of pixels of the camera shooting assembly, and the unit pixel size of the camera shooting assembly includes: determining a third distance of the calibration point in the shooting picture according to a first distance between the shooting component and a target object in the shooting picture, the focal length of the shooting component and calibration point information matched with the shooting component; determining the shooting distance of the shooting picture according to the third distance of the calibration point in the shooting picture, the total number of pixels of the shooting component, the unit pixel size of the shooting component, the focal length of the shooting component and the calibration point information matched with the shooting component; and determining the scale information of the virtual scale according to the shooting distance. Specifically, first, a third distance of the calibration point in the captured image is obtained according to a formula E = D × F/D, where D is a first distance between the camera module and the target object in the captured image, F is a focal length of the camera module, D is a second distance between the calibration point and the camera module, and E is a third distance of the calibration point in the captured image, that is, a distance between an imaging point of the calibration point in the captured image and a center point of the captured image, for example, in the above technical solution, a laser emitter is used as the calibration point, and a distance between an imaging point of laser emitted by the laser emitter in the captured image and the center point of the captured image is a third distance of the calibration point in the captured image; particularly, if the second distance d between the calibration point and the camera assembly is a horizontal distance, the third distance E is a horizontal distance between an imaging point of the calibration point in the shot picture and a central point of the shot picture; if the second distance d between the calibration point and the camera shooting assembly is the vertical distance, the third distance E is the vertical distance between an imaging point of the calibration point in the shot picture and the center point of the shot picture; secondly, dividing a third distance E of the index point in the shot picture by the unit pixel size S to obtain the pixel number N between the imaging point of the index point and the central point of the shot picture; then, the ratio of the number N of pixels between the imaging point of the calibration point and the center point of the shot picture to the total number H of pixels of the shot picture (i.e., the ratio of the pixels corresponding to the imaging distance to the pixels of the whole shot picture) is the same as the ratio of the second distance d between the calibration point and the camera component to the actual distance X of shooting the picture, i.e., N/H = d/X; if the third distance E of the calibration point in the shot picture is the horizontal distance, the pixel number N is the horizontal pixel number between the imaging point of the calibration point and the central point of the shot picture, the pixel total number H is the total number of the horizontal pixels, and the actual distance X of the shot picture is the actual horizontal distance of the shot picture; if the third distance E of the calibration point in the shot picture is the vertical distance, the pixel number N is the longitudinal pixel number between the imaging point of the calibration point and the central point of the shot picture, the pixel total number H is the longitudinal pixel total number, and the actual distance X of the shot picture is the actual vertical distance of the shot picture; accordingly, the actual distance X shot by the shot picture is acquired, and the maximum scale of the virtual scale represents the actual distance shot by the current shot picture, for example, the distance in the horizontal direction shot by the current shot picture is 5 meters, then the maximum scale of the corresponding horizontal virtual scale is displayed as 500 centimeters or 5000 millimeters, and then the middle scale of the virtual scale is distributed, for example, 10 centimeters are used as one scale, that is, a scale mark appears on the virtual scale every 10 centimeters, and then the horizontal virtual scale with complete scales is acquired; according to the imaging principle, the ratio of the horizontal shooting distance to the vertical shooting distance of the shot picture is the same as the ratio of the total number of the transverse pixels to the total number of the longitudinal pixels of the camera, so that the vertical shooting distance of the shot picture can be determined according to the total number of the transverse pixels, the total number of the longitudinal pixels and the horizontal shooting distance of the shot picture, and correspondingly, the maximum scale of the vertical virtual scale is the vertical shooting distance of the shot picture; for example, as shown in fig. 1B, the resolution of the camera is 500 × 300, the distance in the horizontal direction captured by the captured image is 5 meters, the distance in the vertical direction captured by the captured image is 3 meters, that is, the maximum scale of the vertical virtual scale is displayed as 300 centimeters or 3000 millimeters, and then the middle scale of the vertical virtual scale is allocated; similarly, if the third distance E of the calibration point in the shot picture is a vertical distance, the number of pixels N is the number of longitudinal pixels between the imaging point of the calibration point and the central point of the shot picture, the total number of pixels H is the total number of longitudinal pixels, and the actual distance X of the shot picture is the actual vertical distance of the shot picture, the scale information of the corresponding vertical virtual scale can be obtained, and then the scale information of the horizontal virtual scale is obtained according to the imaging principle.
Optionally, in an embodiment of the present invention, after determining the scale information of the virtual scale according to a first distance between the camera module and a target object in the captured picture, a focal length of the camera module, calibration point information matched with the camera module, a total number of pixels of the camera module, and a unit pixel size of the camera module, the method further includes: and determining the length information and/or the height information of the target object according to the scale information of the virtual scale by an image recognition technology. When the image recognition technology processes the target object image, the processing mode can comprise various modes such as image smoothing, transformation, enhancement, restoration and/or filtering and the like so as to obtain clear and accurate image information; as shown in fig. 1C, by using an image recognition technology, a ratio of the length of the target object in the shooting picture to the total length of the whole shooting picture (for example, the ratio is 1/10) can be obtained, and the maximum scale of the virtual scale represents the actual distance in the horizontal direction shot by the current shooting picture, for example, in the above technical solution, the distance in the horizontal direction shot by the current shooting picture is 5 meters, and accordingly, the length of the target object can be obtained as 5 × 1/10=0.5 meters; according to the scale information of the virtual scale, the length information of the target object is directly acquired through an image recognition technology, the complex process of manual measurement operation is avoided, and the acquisition efficiency of target data is improved.
Optionally, in an embodiment of the present invention, after determining the scale information of the virtual scale according to a first distance between the camera module and a target object in the captured picture, a focal length of the camera module, calibration point information matched with the camera module, a total number of pixels of the camera module, and a unit pixel size of the camera module, the method further includes: when a virtual scale dragging instruction is acquired, the virtual scale is controlled to move along the vertical direction or the horizontal direction of the display screen according to the virtual scale dragging instruction. Specifically, as shown in fig. 1D, when a horizontal virtual scale dragging instruction is obtained, the horizontal virtual scale may move in the vertical direction of the display screen as long as the upper and lower boundaries of the display interface are not exceeded; as shown in fig. 1E, when a dragging instruction of the vertical virtual scale is obtained, the vertical virtual scale can move in the horizontal direction of the display screen as long as the dragging instruction does not exceed the left and right boundaries of the display interface, so that the observation effect of a user is not affected even if an object is not in the middle area of the display interface during shooting, the requirement on the picture quality during shooting is not too strict, and the measurement operation efficiency can be greatly accelerated; in addition, the position of the virtual scale is adjusted, so that a user can more accurately measure the position, and the measurement error is reduced.
Optionally, in an embodiment of the present invention, the virtual scale includes at least one sliding measurement scale; after determining the scale information of the virtual scale according to the first distance between the camera shooting component and the target object in the shot picture, the focal length of the camera shooting component, the information of the calibration point matched with the camera shooting component, the total number of pixels of the camera shooting component and the unit pixel size of the camera shooting component, the method further comprises the following steps: when a sliding measurement scale moving instruction is acquired, the sliding measurement scale is controlled to slide along the virtual scale according to the sliding measurement scale moving instruction, and measurement information is displayed according to the sliding position of the sliding measurement scale. Specifically, the virtual scale comprises at least one sliding measurement scale, the sliding measurement scale can slide on the virtual scale at will, and when the number of the sliding measurement scales is 1, the distance between the sliding measurement scale and the left and right boundaries or the upper and lower boundaries of the shooting picture can be read; as shown in fig. 1F, when the number of the sliding scales in the horizontal virtual scale is 2, the distance between the two sliding measurement scales, the distance between the left sliding measurement scale and the left boundary of the photographed image, and the distance between the right sliding measurement scale and the right boundary of the photographed image can be read; as shown in fig. 1G, when the number of the sliding scales in the vertical virtual scale is 2, the distance between the two sliding measurement scales, the distance between the upper sliding measurement scale and the upper boundary of the photographed image, and the distance between the lower sliding measurement scale and the lower boundary of the photographed image can be read; by adding the sliding measurement scale on the virtual scale and controlling the sliding measurement scale to slide along the virtual scale according to the sliding measurement scale movement instruction, a user can visually observe the length information and/or the height information of a target object and can acquire the position information of the target object in a shot picture, meanwhile, the length information and/or the height information of any region in the shot picture can be acquired through sliding of the sliding measurement scale, and convenience is brought to observers to flexibly and accurately measure the target object at one or more different positions in a display interface.
Optionally, in an embodiment of the present invention, after determining the scale information of the virtual scale according to a first distance between the camera module and a target object in the captured picture, a focal length of the camera module, calibration point information matched with the camera module, a total number of pixels of the camera module, and a unit pixel size of the camera module, the method further includes: when the finger sliding information is detected, displaying a sliding track matched with the finger sliding information on the display screen, and displaying displacement information of the sliding track. Specifically, as shown in fig. 1H, the finger slide information starts with the finger pressed and ends with the finger lifted. Acquiring the number of transverse pixels and the number of longitudinal pixels which are slid by a finger through a display screen, determining a relative horizontal sliding distance according to the ratio of the number of the transverse pixels to the total number of the transverse pixels of the display screen, and combining the maximum scale information of a horizontal virtual scale to obtain the real horizontal displacement represented by the sliding; meanwhile, determining the relative vertical sliding distance according to the ratio of the number of the longitudinal pixels to the total number of the longitudinal pixels of the display screen, and combining the maximum scale information of the vertical virtual scale, thereby obtaining the real vertical displacement represented by the sliding. By displaying the sliding track and the displacement information matched with the finger sliding information on the display screen, the sliding operation of the user at this time is visually displayed, the detected displacement information is not influenced by the position of the virtual scale, and the convenience for the user to obtain the horizontal measurement information is improved.
According to the technical scheme provided by the embodiment of the invention, after the shooting picture is obtained through the camera shooting assembly of the shooting device and displayed in the display screen, the virtual scale matched with the shooting interface is displayed on the display interface, and the scale information of the virtual scale is determined according to the shooting range of the shooting picture, so that a user can visually know the actual shooting range through the shooting picture, meanwhile, the virtual scale also provides a measuring basis for the user to measure the horizontal distance and the vertical distance of each area in the shooting picture, and the measuring efficiency of the measuring operation is improved while the remote measurement is realized.
Example two
Fig. 2 is a flowchart of a shot picture displaying method according to a second embodiment of the present invention, which is embodied on the basis of the above-described embodiments, in which after a shot picture of a camera module is displayed on a display screen, a shooting adjustment instruction is sent to the camera module according to an area ratio of a target object in the shot picture, and the method specifically includes the following steps:
s210, acquiring a shooting picture through a shooting component of the underwater shooting component, and displaying the shooting picture in a display screen.
S220, identifying the contour information of the target object in the shooting picture, and acquiring the area proportion of the target object in the shooting picture according to the contour information;
the contour information of the target object can be acquired through an image recognition technology, and the contour information can be accurately extracted by detecting the image edge of the target object. For example, a training model is established for a target object through an integral nested edge detection algorithm or other deep learning-based edge extraction algorithms, so as to accurately extract contour information of a complex target object. The area ratio of the target object in the shooting picture can be obtained by calculating the ratio of the outline area of the target object to the area in the shooting picture.
S230, if the area ratio is smaller than a first preset area threshold, sending a first shooting adjusting instruction to the shooting device so that the shooting device can improve the area ratio;
the first preset area threshold is a minimum ratio of a preset outline area of the target object to an area in the shooting picture. If the ratio of the outline area of the current target object to the area in the shot picture is smaller than a first preset area threshold value, the area of the target object in the shot picture is small and is not obvious in display, at the moment, a first shooting adjusting instruction is sent to the shooting device to enable the shooting device to improve the area ratio, the first shooting adjusting instruction comprises a focal length enlarging instruction and/or a first distance reducing instruction, namely, an instruction for enlarging the focal length of the shooting assembly and/or an instruction for reducing the first distance between the shooting assembly and the target object in the shot picture are sent to the shooting device.
S240, if the area ratio is larger than a second preset area threshold, sending a second shooting adjusting instruction to the shooting device so that the shooting device reduces the area ratio; wherein the second preset area threshold is greater than the first preset area threshold.
The second preset area threshold is a maximum ratio of a preset outline area of the target object to an area in the shooting picture. If the ratio of the outline area of the current target object to the area in the shot picture is larger than a second preset area threshold value, it is indicated that the area of the target object in the shot picture is too large, and image display distortion is caused, at the moment, a second shooting adjusting instruction is sent to the shooting device so that the shooting device can account for the area, and the second shooting adjusting instruction comprises a focal length reducing instruction and/or a first distance increasing instruction, namely, an instruction for reducing the focal length of the shooting assembly and/or an instruction for increasing the first distance between the shooting assembly and the target object in the shot picture is sent to the shooting device.
Particularly, for some special scenes of the seabed, such as reef obstacles and the like, under the condition that the first distance between the camera shooting component and the target object in the shot picture cannot meet the condition, the area ratio of the target object in the shot picture can be adjusted by adjusting the focal length of the camera shooting component, so that the measurement result is more accurate; in addition, under the condition that the focal length of the camera shooting assembly cannot be adjusted to meet the conditions, if the focal length range of the camera shooting assembly is beyond the adjustable focal length range of the camera shooting assembly, the area ratio of the target object in the shot picture can be adjusted by adjusting the first distance between the camera shooting assembly and the target object in the shot picture, and the purpose of accurate measurement is also achieved.
According to the technical scheme provided by the embodiment of the invention, when the area proportion of the target object in the shot picture does not meet the preset area threshold, the display state of the target object in the shot picture is adjusted by sending the shooting adjusting instruction to the shooting device, so that the display distortion or the display unclear of the target object is avoided, and the target object keeps a display form with proper size and clearness in the shot picture.
EXAMPLE III
Fig. 3 is a block diagram of a display apparatus for shooting pictures according to a third embodiment of the present invention, where the apparatus includes: a photographed picture acquisition module 310 and a virtual ruler acquisition module 320;
the shooting picture acquiring module 310 is configured to acquire a shooting picture through a shooting component of the shooting device and display the shooting picture in a display screen;
a virtual scale obtaining module 320, configured to present, in the display screen, a virtual scale matched with the shot picture, and determine scale information of the virtual scale according to a first distance between the camera shooting assembly and a target object in the shot picture, a focal length of the camera shooting assembly, scaling point information matched with the camera shooting assembly, a total number of pixels of the camera shooting assembly, and a unit pixel size of the camera shooting assembly; the calibration point information includes a second distance between the calibration point and the camera assembly.
According to the technical scheme provided by the embodiment of the invention, after the shooting picture is obtained through the camera shooting assembly of the shooting device and displayed in the display screen, the virtual scale matched with the shooting interface is displayed on the display interface, and the scale information of the virtual scale is determined according to the shooting range of the shooting picture, so that a user can visually know the actual shooting range through the shooting picture, meanwhile, the virtual scale also provides a measuring basis for the user to measure the horizontal distance and the vertical distance of each area in the shooting picture, and the measuring efficiency of the measuring operation is improved while the remote measurement is realized.
Optionally, on the basis of the above technical solution, the display device for shooting the picture further includes:
and the length information determining module is used for determining the length information and/or the height information of the target object according to the scale information of the virtual scale through an image recognition technology.
Optionally, on the basis of the above technical solution, the display device for shooting the picture further includes:
and the virtual scale control module is used for controlling the virtual scale to move along the vertical direction or the horizontal direction of the display screen according to the virtual scale dragging instruction when the virtual scale dragging instruction is acquired.
Optionally, on the basis of the above technical solution, the display device for shooting a picture further includes:
and the sliding measurement scale control module is used for controlling the sliding measurement scale to slide along the virtual scale according to the sliding measurement scale movement instruction when the sliding measurement scale movement instruction is acquired, and displaying measurement information according to the sliding position of the sliding measurement scale.
Optionally, on the basis of the above technical solution, the display device for shooting a picture further includes:
and the sliding track display module is used for displaying a sliding track matched with the finger sliding information on the display screen and displaying the displacement information of the sliding track when the finger sliding information is detected.
Optionally, on the basis of the above technical solution, the display device for shooting the picture further includes:
the contour recognition module is used for recognizing the contour information of the target object in the shooting picture and acquiring the area ratio of the target object in the shooting picture according to the contour information;
a first shooting adjustment instruction sending module, configured to send a first shooting adjustment instruction to the shooting device if the area ratio is smaller than a first preset area threshold, so that the shooting device increases the area ratio;
the second shooting adjusting instruction sending module is used for sending a second shooting adjusting instruction to the shooting device if the area occupation ratio is larger than a second preset area threshold value so as to enable the shooting device to reduce the area occupation ratio; the first shooting adjusting instruction comprises a focal length enlarging instruction and/or a first distance reducing instruction, and the second shooting adjusting instruction comprises a focal length reducing instruction and/or a first distance increasing instruction.
Optionally, on the basis of the foregoing technical solution, the virtual scale obtaining module 320 specifically includes:
a third distance obtaining unit, configured to determine a third distance of the calibration point in the captured picture according to the first distance between the camera shooting assembly and the target object in the captured picture, the focal length of the camera shooting assembly, and calibration point information matched with the camera shooting assembly;
a horizontal shooting distance obtaining unit, configured to determine a shooting distance of the shooting picture according to a third distance of the calibration point in the shooting picture, a total number of pixels of the shooting component, a unit pixel size of the shooting component, a focal length of the shooting component, and calibration point information matched with the shooting component;
and the scale information acquisition unit is used for determining the scale information of the virtual scale according to the shooting distance.
The display device for the shot picture provided by the embodiment of the invention can execute the display method for the shot picture provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided in any embodiment of the present invention.
Example four
Fig. 4 is a schematic structural diagram of a display apparatus for shot pictures according to a fourth embodiment of the present invention. Fig. 4 illustrates a block diagram of an exemplary device 12 suitable for use in implementing embodiments of the present invention. The device 12 shown in fig. 4 is only an example and should not bring any limitation to the function and scope of use of the embodiments of the present invention.
As shown in FIG. 4, device 12 is in the form of a general purpose computing device. The components of device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) 30 and/or cache memory 32. The device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, commonly referred to as a "hard drive"). Although not shown in FIG. 4, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. System memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in system memory 28, such program modules 42 including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination of which may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of embodiments of the invention as described.
The processing unit 16 executes various functional applications and data processing, such as implementing a method of presenting a captured picture provided by any of the embodiments of the present invention, by running a program stored in the system memory 28. Namely: acquiring a shooting picture through a shooting component of a shooting device, and displaying the shooting picture in a display screen; displaying a virtual scale matched with the shot picture in the display screen, and determining scale information of the virtual scale according to a first distance between the camera shooting assembly and a target object in the shot picture, a focal length of the camera shooting assembly, scale point information matched with the camera shooting assembly, the total number of pixels of the camera shooting assembly and the unit pixel size of the camera shooting assembly; the calibration point information includes a second distance between the calibration point and the camera assembly.
EXAMPLE five
Fifth, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a shot picture displaying method according to any embodiment of the present invention; the method comprises the following steps:
acquiring a shooting picture through a shooting component of a shooting device, and displaying the shooting picture in a display screen;
displaying a virtual scale matched with the shot picture in the display screen, and determining scale information of the virtual scale according to a first distance between the camera shooting assembly and a target object in the shot picture, a focal length of the camera shooting assembly, scale point information matched with the camera shooting assembly, the total number of pixels of the camera shooting assembly and the unit pixel size of the camera shooting assembly; wherein the calibration point information includes a second distance between the calibration point and the camera assembly.
Computer storage media for embodiments of the present invention may take the form of any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention or portions thereof contributing to the prior art may be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the search apparatus, each included unit and each included module are merely divided according to functional logic, but are not limited to the above division, as long as corresponding functions can be implemented; in addition, the specific names of the functional units are only for the convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (9)
1. A shot picture display method is characterized by comprising the following steps:
acquiring a shot picture through a camera shooting assembly of the shooting device, and displaying the shot picture in a display screen;
displaying a virtual scale matched with the shot picture in the display screen, and determining scale information of the virtual scale according to a first distance between the camera shooting component and a target object in the shot picture, a focal length of the camera shooting component, scale point information matched with the camera shooting component, the total number of pixels of the camera shooting component and the unit pixel size of the camera shooting component; the calibration point information comprises a second distance between the calibration point and the camera shooting assembly;
when finger sliding information is detected, displaying a sliding track matched with the finger sliding information on the display screen, and displaying displacement information of the sliding track;
wherein displaying displacement information of the sliding trajectory includes:
acquiring the number of transverse pixels and the number of longitudinal pixels which are slid by a finger through a display screen, and determining a relative horizontal sliding distance according to the ratio of the number of the transverse pixels to the total number of the transverse pixels of the display screen;
acquiring real horizontal displacement corresponding to the sliding track according to the relative horizontal sliding distance and the maximum scale information of the horizontal virtual scale;
and determining a relative vertical sliding distance according to the ratio of the number of the longitudinal pixels to the total number of the longitudinal pixels of the display screen, and acquiring the real vertical displacement corresponding to the sliding track according to the relative vertical sliding distance and the maximum scale information of the vertical virtual scale.
2. The method according to claim 1, wherein after determining the scale information of the virtual scale according to the first distance between the camera assembly and the target object in the captured picture, the focal length of the camera assembly, the calibration point information matched with the camera assembly, the total number of pixels of the camera assembly, and the unit pixel size of the camera assembly, the method further comprises:
and determining the length information and/or the height information of the target object according to the scale information of the virtual scale by an image recognition technology.
3. The method according to claim 1, wherein after determining the scale information of the virtual scale according to the first distance between the camera assembly and the target object in the captured picture, the focal length of the camera assembly, the calibration point information matched with the camera assembly, the total number of pixels of the camera assembly, and the unit pixel size of the camera assembly, the method further comprises:
when a virtual scale dragging instruction is acquired, the virtual scale is controlled to move along the vertical direction or the horizontal direction of the display screen according to the virtual scale dragging instruction.
4. The method of claim 1, wherein the virtual scale comprises at least one sliding measurement scale;
after determining the scale information of the virtual scale according to the first distance between the camera shooting component and the target object in the shot picture, the focal length of the camera shooting component, the information of the calibration point matched with the camera shooting component, the total number of pixels of the camera shooting component and the unit pixel size of the camera shooting component, the method further comprises the following steps:
when a sliding measurement scale moving instruction is acquired, the sliding measurement scale is controlled to slide along the virtual scale according to the sliding measurement scale moving instruction, and measurement information is displayed according to the sliding position of the sliding measurement scale.
5. The method of claim 1, after capturing the captured image via a camera assembly of the camera device and displaying the captured image on a display screen, further comprising:
identifying the outline information of the target object in the shooting picture, and acquiring the area proportion of the target object in the shooting picture according to the outline information;
if the area ratio is smaller than a first preset area threshold value, sending a first shooting adjusting instruction to the shooting device so that the shooting device improves the area ratio;
if the area ratio is larger than a second preset area threshold value, sending a second shooting adjusting instruction to the shooting device so that the shooting device reduces the area ratio;
the first shooting adjusting instruction comprises a focal length enlarging instruction and/or a first distance reducing instruction, the second shooting adjusting instruction comprises a focal length reducing instruction and/or a first distance increasing instruction, and the second preset area threshold value is larger than the first preset area threshold value.
6. The method according to claim 1, wherein the determining the scale information of the virtual scale according to the first distance between the camera assembly and the target object in the shot picture, the focal length of the camera assembly, the calibration point information matched with the camera assembly, the total number of pixels of the camera assembly and the unit pixel size of the camera assembly comprises:
determining a third distance of the calibration point in the shooting picture according to a first distance between the shooting component and a target object in the shooting picture, the focal length of the shooting component and calibration point information matched with the shooting component;
determining the shooting distance of the shooting picture according to the third distance of the calibration point in the shooting picture, the total number of pixels of the shooting component, the unit pixel size of the shooting component, the focal length of the shooting component and the calibration point information matched with the shooting component;
and determining the scale information of the virtual scale according to the shooting distance.
7. A picture-taking display device, comprising:
the shooting picture acquisition module is used for acquiring a shooting picture through a shooting component of the shooting device and displaying the shooting picture in the display screen;
the virtual scale acquisition module is used for presenting a virtual scale matched with the shot picture in the display screen and determining the scale information of the virtual scale according to the first distance between the camera shooting assembly and a target object in the shot picture, the focal length of the camera shooting assembly, the calibration point information matched with the camera shooting assembly, the total number of pixels of the camera shooting assembly and the unit pixel size of the camera shooting assembly; the calibration point information comprises a second distance between the calibration point and the camera shooting component;
the sliding track display module is used for displaying a sliding track matched with the finger sliding information on the display screen and displaying displacement information of the sliding track when the finger sliding information is detected;
wherein, the displaying the displacement information of the sliding track comprises:
acquiring the number of transverse pixels and the number of longitudinal pixels which are slid by a finger through a display screen, and determining a relative horizontal sliding distance according to the ratio of the number of the transverse pixels to the total number of the transverse pixels of the display screen;
acquiring real horizontal displacement corresponding to the sliding track according to the relative horizontal sliding distance and the maximum scale information of the horizontal virtual scale;
and determining a relative vertical sliding distance according to the ratio of the number of the longitudinal pixels to the total number of the longitudinal pixels of the display screen, and acquiring the real vertical displacement corresponding to the sliding track according to the relative vertical sliding distance and the maximum scale information of the vertical virtual scale.
8. An apparatus, characterized in that the apparatus comprises:
one or more processors;
storage means for storing one or more programs;
the distance sensor is used for detecting the distance between the object on the front side of the equipment and the equipment;
when executed by the one or more processors, cause the one or more processors to implement a method of presenting a photographic image as claimed in any one of claims 1-6.
9. A computer-readable storage medium on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a method of presentation of a picture taking as claimed in any one of claims 1 to 6.
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| CN112843694B (en) * | 2020-12-31 | 2024-08-02 | 上海米哈游天命科技有限公司 | Picture shooting method and device, storage medium and electronic equipment |
| CN113029093A (en) * | 2021-03-26 | 2021-06-25 | 杭州东方通信软件技术有限公司 | Object height calculation method and device based on two-time imaging |
| CN113256540B (en) * | 2021-07-14 | 2021-11-19 | 智道网联科技(北京)有限公司 | Image distortion removal method and apparatus, electronic device, and computer-readable storage medium |
| CN114885097B (en) * | 2022-03-31 | 2024-02-06 | 浙江大华技术股份有限公司 | Method, device and storage medium for monitoring water flow by intelligent camera |
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