CN117576298A - Battlefield situation target highlighting method based on context separation 3D lens - Google Patents
Battlefield situation target highlighting method based on context separation 3D lens Download PDFInfo
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Abstract
The present disclosure relates to a battlefield situation target highlighting method based on a context-based separation of 3D lenses. Wherein the method comprises the following steps: drawing a background separation mask ball based on a preset bounding ball calculation method, and realizing front-back background separation of the target to be highlighted; if the center distance between the background separation mask ball of the object to be highlighted and the background separation mask balls of the other objects is smaller than the sum of the radius of the background separation mask balls, carrying out adjacent object blanking treatment on the other objects; and generating a viewpoint cone based on the background separation mask ball, and respectively completing viewpoint cone inner target judgment and viewpoint cone outer target judgment, thereby respectively realizing viewpoint cone inner target blanking processing and viewpoint cone outer target blanking processing. The method and the device carry out blanking judgment based on the adjacent target blanking method, remove the shielding influence of other targets, realize the visual separation of the important focus target from the context thereof, and ensure the highlighting of the important target.
Description
Technical Field
The disclosure relates to the field of comprehensive battlefield situation display, in particular to a battlefield situation target highlighting method based on a context separation 3D lens.
Background
Along with the wide popularization of digital earth technology, the combined combat battlefield situation adopts the technology to carry out situation comprehensive three-dimensional display, wherein the important attention is focused on the target, and the target needs to be rapidly and clearly presented to combat commanders through efficient man-machine interaction processing. However, because the number of targets in the situation is large, the screen display range is limited, and shielding interference of other targets, interference of colors of remote sensing images on the ground and the like often occur in the context, so that the key targets are displayed incompletely, and the decision making process of fighters is delayed, so that the method for searching and eliminating various interferences in the context and optimizing the highlighting of the key targets is one of important research contents of the battlefield situation comprehensive display technology.
There are still some problems with the existing local highlighting methods. For example, a local magnifying glass in a 3D GIS has a certain local enhancement display effect, but when the interference of the colors and the like of local surface remote sensing images is large, the method can fail; in the surrounding sphere highlighting method, a surrounding sphere is added to the target of interest, and the target of interest and the context target are visually separated, so that a certain highlighting effect is provided, but if there are many other targets in the vicinity of the target, the target of interest is blocked, and the target of interest is incompletely displayed. In addition, when the three-dimensional viewpoint changes, other objects may exist between the viewpoint and the target of interest, and still shielding is formed on the target of interest, so that the visual display of the target of interest is incomplete.
Accordingly, there is a need for one or more approaches to address the above-described problems.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
It is an object of the present disclosure to provide a battlefield situation target highlighting method, apparatus, electronic device, and computer readable storage medium based on a context separation 3D lens, which overcome, at least in part, one or more of the problems due to the limitations and disadvantages of the related art.
According to one aspect of the present disclosure, there is provided a battlefield situation target highlighting method based on a context separation 3D lens, including:
based on a preset bounding sphere calculation method, calculating a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display, drawing a background separation mask sphere based on the three-dimensional bounding sphere, and performing single-color filling rendering on the background separation mask sphere to realize front-back background separation of the target to be highlighted;
calculating the center distance between the background separation mask ball of the object to be highlighted and the background separation mask balls of the other objects, and if the center distance is smaller than the sum of the radius of the background separation mask ball of the object to be highlighted and the radius of the background separation mask ball of the other objects, carrying out adjacent object blanking treatment on the other objects;
Generating a viewpoint cone based on the background separation mask sphere of the target to be highlighted, and respectively completing viewpoint cone internal target judgment and viewpoint cone external target judgment based on the viewpoint cone, so as to respectively realize viewpoint cone internal target blanking processing and viewpoint cone external target blanking processing, thereby realizing the visual separation of the target to be highlighted and the rest targets.
In an exemplary embodiment of the present disclosure, the method further comprises:
acquiring a three-dimensional label or a three-dimensional model of a target to be highlighted in the comprehensive battlefield situation display;
a three-dimensional bounding sphere is generated that minimally encloses the three-dimensional label or model based on the three-dimensional label or model.
In an exemplary embodiment of the present disclosure, the method further comprises:
expanding the radius of the three-dimensional surrounding sphere by a preset proportion;
performing single-color filling rendering on the spherical triangular mesh of the three-dimensional surrounding sphere with the radius expanded by a preset proportion;
and eliminating the triangular surface patches of the three-dimensional view angles of the three-dimensional surrounding sphere with the radius expanded by a preset proportion to generate a background separation mask sphere.
In an exemplary embodiment of the present disclosure, the method further comprises:
Traversing each target in the battlefield situation comprehensive display;
respectively calculating the center distances of the background separation mask balls of the targets to be highlighted and the background separation mask balls of the other targets except the targets to be highlighted in all targets in the battlefield situation comprehensive display;
if the sphere center distance is smaller than the sum of the radius of the background separation mask sphere of the target to be highlighted and the radius of the background separation mask sphere of the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display, judging the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display as conflict targets;
and carrying out adjacent target blanking processing on the conflict targets.
In an exemplary embodiment of the present disclosure, the method further comprises:
constructing a right cone with a three-dimensional viewpoint as a conical top point and a plane passing through the sphere center of the background separation mask sphere of the target to be highlighted as a conical bottom surface;
and generating a viewpoint cone containing a preset opening angle based on the right cone.
In an exemplary embodiment of the present disclosure, the method further comprises:
calculating the included angle between the spherical center vector of the background separation mask sphere of the other targets except the target to be highlighted and the preset opening angle in each target in the battlefield situation comprehensive display;
If the included angle is larger than 0 and smaller than half of the preset opening angle, respectively calculating a first distance between a three-dimensional viewpoint and the sphere center of a background separation mask sphere of the rest of the targets except for the target to be highlighted in each target in the battlefield situation comprehensive display, and a second distance between an extension line of the sphere center of the background separation mask sphere of the rest of the targets except for the target to be highlighted in each target in the battlefield situation comprehensive display and the intersection point of the cone bottom surface and the three-dimensional viewpoint, and if the first distance is smaller than the second distance, judging that the rest of the targets except for the target to be highlighted in each target in the battlefield situation comprehensive display are viewpoint cone internal conflict targets;
and carrying out cone inner target blanking processing on the viewpoint cone inner conflict target, otherwise, carrying out cone outer target blanking processing.
In an exemplary embodiment of the present disclosure, the method further comprises:
dividing the ground boundary of the viewpoint cone by a preset sampling proportion to construct a collision detection line segment set;
if the background separation mask balls of the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display are intersected with the collision detection line segments in the collision detection line segment set, judging that the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display are viewpoint cone external conflict targets;
And carrying out cone external target blanking processing on the viewpoint cone external conflict target.
In one aspect of the present disclosure, there is provided a battlefield situation target highlighting apparatus based on a context separation 3D lens, comprising:
the front-back background separation module is used for calculating a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display based on a preset bounding sphere calculation method, drawing a background separation mask sphere based on the three-dimensional bounding sphere, and performing single-color filling rendering on the background separation mask sphere so as to realize front-back background separation of the target to be highlighted;
the adjacent target blanking processing module is used for calculating the sphere center distance between the background separation mask sphere of the target to be highlighted and the background separation mask sphere of the rest target, and if the sphere center distance is smaller than the sum of the radius of the background separation mask sphere of the target to be highlighted and the radius of the background separation mask sphere of the rest target, the rest target is subjected to adjacent target blanking processing;
and the viewpoint cone target blanking processing module is used for generating a viewpoint cone based on the background separation mask sphere of the target to be highlighted, and respectively completing viewpoint cone inner target judgment and viewpoint cone outer target judgment based on the viewpoint cone, so as to respectively realize viewpoint cone inner target blanking processing and viewpoint cone outer target blanking processing, and realize visual separation of the target to be highlighted and the rest target.
In one aspect of the present disclosure, there is provided an electronic device comprising:
a processor; and
a memory having stored thereon computer readable instructions which, when executed by the processor, implement a method according to any of the above.
In one aspect of the present disclosure, a computer readable storage medium is provided, on which a computer program is stored, which when executed by a processor, implements a method according to any of the above.
A battlefield situation target highlighting method of separating a 3D lens based on context in an exemplary embodiment of the present disclosure, wherein the method comprises: based on a preset bounding sphere calculation method, calculating a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display, drawing a background separation mask sphere based on the three-dimensional bounding sphere, and performing single-color filling rendering on the background separation mask sphere to realize front-back background separation of the target to be highlighted; calculating the center distance between the background separation mask ball of the object to be highlighted and the background separation mask balls of the other objects, and if the center distance is smaller than the sum of the radius of the background separation mask ball of the object to be highlighted and the radius of the background separation mask ball of the other objects, carrying out adjacent object blanking treatment on the other objects; generating a viewpoint cone based on the background separation mask sphere of the target to be highlighted, and respectively completing viewpoint cone internal target judgment and viewpoint cone external target judgment based on the viewpoint cone, so as to respectively realize viewpoint cone internal target blanking processing and viewpoint cone external target blanking processing, thereby realizing the visual separation of the target to be highlighted and the rest targets. The novel design method for blanking adjacent targets is provided, blanking judgment is carried out based on the spherical center distance, the shielding influence of other targets in the context of the important focus target is well cleared, the visual separation of the important focus target and the context is realized, and the integrity of highlighting of the important focus target is ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
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The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 illustrates a flow chart of a battlefield situation target highlighting method based on a context-splitting 3D lens according to an exemplary embodiment of the present disclosure;
FIG. 2 illustrates a background split mask sphere build schematic of a battlefield situation target highlighting method based on a context split 3D lens according to an exemplary embodiment of the present disclosure;
FIG. 3 illustrates a near-object blanking process diagram based on the centroid distance for a battlefield situation object highlighting method based on a context separation 3D lens according to an exemplary embodiment of the present disclosure;
FIG. 4 illustrates a view cone build schematic of a battlefield situation target highlighting method based on a context separation 3D lens according to an exemplary embodiment of the present disclosure;
FIG. 5 illustrates a view-cone internal target blanking process schematic of a battlefield situation target highlighting method based on a context-splitting 3D lens according to an exemplary embodiment of the present disclosure;
FIG. 6 illustrates a view-cone external target blanking process schematic of a battlefield situation target highlighting method based on a context separation 3D lens according to an exemplary embodiment of the present disclosure;
FIG. 7 illustrates a schematic block diagram of a battlefield situation target highlighting apparatus based on a context-splitting 3D lens according to an exemplary embodiment of the present disclosure;
FIG. 8 schematically illustrates a block diagram of an electronic device according to an exemplary embodiment of the present disclosure;
fig. 9 schematically illustrates a schematic diagram of a computer-readable storage medium according to an exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, materials, devices, steps, etc. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, or in one or more software-hardened modules, or in different networks and/or processor devices and/or microcontroller devices.
In the present exemplary embodiment, a battlefield situation target highlighting method based on a context separation 3D lens is first provided; referring to fig. 1, the battlefield situation target highlighting method of the context-based separation 3D lens may include the steps of:
step S110, calculating a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display based on a preset bounding sphere calculation method, drawing a background separation mask sphere based on the three-dimensional bounding sphere, and performing single-color filling rendering on the background separation mask sphere to realize front-back background separation of the target to be highlighted;
step S120, calculating the center distance between the background separation mask ball of the object to be highlighted and the background separation mask balls of the other objects, and if the center distance is smaller than the sum of the radius of the background separation mask ball of the object to be highlighted and the radius of the background separation mask ball of the other objects, carrying out adjacent object blanking treatment on the other objects;
And step S130, generating a viewpoint cone based on the background separation mask sphere of the target to be highlighted, and respectively completing viewpoint cone internal target judgment and viewpoint cone external target judgment based on the viewpoint cone, so as to respectively realize viewpoint cone internal target blanking processing and viewpoint cone external target blanking processing, thereby realizing the visual separation of the target to be highlighted and the rest target.
A battlefield situation target highlighting method of separating a 3D lens based on context in an exemplary embodiment of the present disclosure, wherein the method comprises: based on a preset bounding sphere calculation method, calculating a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display, drawing a background separation mask sphere based on the three-dimensional bounding sphere, and performing single-color filling rendering on the background separation mask sphere to realize front-back background separation of the target to be highlighted; calculating the center distance between the background separation mask ball of the object to be highlighted and the background separation mask balls of the other objects, and if the center distance is smaller than the sum of the radius of the background separation mask ball of the object to be highlighted and the radius of the background separation mask ball of the other objects, carrying out adjacent object blanking treatment on the other objects; generating a viewpoint cone based on the background separation mask sphere of the target to be highlighted, and respectively completing viewpoint cone internal target judgment and viewpoint cone external target judgment based on the viewpoint cone, so as to respectively realize viewpoint cone internal target blanking processing and viewpoint cone external target blanking processing, thereby realizing the visual separation of the target to be highlighted and the rest targets. The novel design method for blanking adjacent targets is provided, blanking judgment is carried out based on the spherical center distance, the shielding influence of other targets in the context of the important focus target is well cleared, the visual separation of the important focus target and the context is realized, and the integrity of highlighting of the important focus target is ensured.
Next, a battlefield situation target highlighting method based on a context separation 3D lens in the present exemplary embodiment will be further described.
Embodiment one:
in step S110, a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display may be calculated based on a preset bounding sphere calculation method, a background separation mask sphere is drawn based on the three-dimensional bounding sphere, and single-color filling rendering is performed on the background separation mask sphere to realize front-back background separation of the target to be highlighted.
In an embodiment of the present example, the method further comprises:
acquiring a three-dimensional label or a three-dimensional model of a target to be highlighted in the comprehensive battlefield situation display;
a three-dimensional bounding sphere is generated that minimally encloses the three-dimensional label or model based on the three-dimensional label or model.
In an embodiment of the present example, the method further comprises:
expanding the radius of the three-dimensional surrounding sphere by a preset proportion;
performing single-color filling rendering on the spherical triangular mesh of the three-dimensional surrounding sphere with the radius expanded by a preset proportion;
and eliminating the triangular surface patches of the three-dimensional view angles of the three-dimensional surrounding sphere with the radius expanded by a preset proportion to generate a background separation mask sphere.
In step S120, a center distance between the background separation mask ball of the object to be highlighted and the background separation mask balls of the other objects may be calculated, and if the center distance is smaller than the sum of the radii of the background separation mask ball of the object to be highlighted and the background separation mask ball of the other objects, the other objects are subjected to adjacent object blanking processing.
In an embodiment of the present example, the method further comprises:
traversing each target in the battlefield situation comprehensive display;
respectively calculating the center distances of the background separation mask balls of the targets to be highlighted and the background separation mask balls of the other targets except the targets to be highlighted in all targets in the battlefield situation comprehensive display;
if the sphere center distance is smaller than the sum of the radius of the background separation mask sphere of the target to be highlighted and the radius of the background separation mask sphere of the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display, judging the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display as conflict targets;
and carrying out adjacent target blanking processing on the conflict targets. In step S130, a viewpoint cone may be generated based on the background separation mask sphere of the object to be highlighted, and the viewpoint cone inner object determination and the viewpoint cone outer object determination may be respectively completed based on the viewpoint cone, so as to respectively implement the viewpoint cone inner object blanking process and the viewpoint cone outer object blanking process, so as to implement the visual separation of the object to be highlighted from the rest objects.
In an embodiment of the present example, the method further comprises:
constructing a right cone with a three-dimensional viewpoint as a conical top point and a plane passing through the sphere center of the background separation mask sphere of the target to be highlighted as a conical bottom surface;
and generating a viewpoint cone containing a preset opening angle based on the right cone.
In an embodiment of the present example, the method further comprises:
calculating the included angle between the spherical center vector of the background separation mask sphere of the other targets except the target to be highlighted and the preset opening angle in each target in the battlefield situation comprehensive display;
if the included angle is larger than 0 and smaller than half of the preset opening angle, respectively calculating a first distance between a three-dimensional viewpoint and the sphere center of a background separation mask sphere of the rest of the targets except for the target to be highlighted in each target in the battlefield situation comprehensive display, and a second distance between an extension line of the sphere center of the background separation mask sphere of the rest of the targets except for the target to be highlighted in each target in the battlefield situation comprehensive display and the intersection point of the cone bottom surface and the three-dimensional viewpoint, and if the first distance is smaller than the second distance, judging that the rest of the targets except for the target to be highlighted in each target in the battlefield situation comprehensive display are viewpoint cone internal conflict targets;
And carrying out cone inner target blanking processing on the viewpoint cone inner conflict target, otherwise, carrying out cone outer target blanking processing.
In an embodiment of the present example, the method further comprises:
dividing the ground boundary of the viewpoint cone by a preset sampling proportion to construct a collision detection line segment set;
if the background separation mask balls of the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display are intersected with the collision detection line segments in the collision detection line segment set, judging that the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display are viewpoint cone external conflict targets;
and carrying out cone external target blanking processing on the viewpoint cone external conflict target.
Embodiment two:
in the embodiment of the present example, in the three-dimensional scene display environment, the focus is on the target being at a certain spatial position, but there are various visual disturbances in the context in which it is located: shielding of other targets, color interference of high-definition remote sensing images on the earth surface, and the like, therefore, the embodiment provides a novel context separation 3D lens for highlighting the battlefield situation targets: highlighting the important focus target adopts reverse thinking, and not directly aiming at the target, but optimizing the context of the target: the method and the device eliminate the vision shielding of other targets, the color interference of ground surface images and the like, ensure the completeness and clarity of the highlighting of the important focusing targets, effectively separate the important focusing targets from the context, and further, because the embodiment mainly adopts a three-dimensional spherical surface to highlight the targets, the geometric shape of the three-dimensional spherical surface is similar to a 3D lens, therefore, the three-dimensional spherical surface is named as a context separation 3D lens, and the core function of the lens is to complete the interactive treatment of highlighting the important targets.
Technical implementations of context-splitting 3D lenses include: the preparation stage, the separation of front and back backgrounds, the adjacent target blanking and the viewpoint cone blanking are four stages, and the following detailed description is given:
in the embodiment of the present example, the first stage: preparation: and selecting an important attention object F from the battlefield situation, and preparing for highlighting. The object may employ geometry: three-dimensional labels (vector label display patterns similar to two-dimensional labels) or three-dimensional models (three-dimensional model display patterns, three-dimensional real models modeled with 3 DMax: tanks, fighter plane, etc.).
In the embodiment of the present example, the second stage: front-back background separation: based on the bounding sphere calculation method of geometry in computer graphics (the three-dimensional rendering engine OpenSceneGraph already provides a direct interface for calculating the bounding sphere), the three-dimensional bounding sphere of the object F of interest is calculated, the radius of the sphere is properly expanded (a small amount of expansion mainly eliminates calculation errors), and then single-color filling rendering is carried out on the spherical triangle mesh. In order to ensure that the visual interference of the triangular mesh on the spherical surface on the object of interest F is eliminated, the triangular patches facing the three-dimensional viewpoint on the spherical surface need to be removed (set by the roll Face of OpenGL), and the triangular patches on the back surface remain. This newly constructed monochromatic sphere is called the "background split mask sphere" of the object of interest, denoted by C, and its center is also denoted by C. By the method, the object F of interest in foreground display and the background context (mainly remote sensing images on the ground surface and the like) can be well separated visually, and visual interference of high-reality image colors and the like on the ground surface in the three-dimensional scene on the object of interest can be shielded, as shown in fig. 2.
In the embodiment of the present example, the third stage: adjacent target blanking: other objects in the space near the focus object F will often also occlude F, resulting in incomplete display of F, and therefore it is desirable to eliminate such occlusion, referred to as "adjacent object blanking": hiding other targets near the F, and ensuring that the F is not blocked by vision of the other targets.
The adjacent target blanking is specifically as follows: traversing each target A in the battlefield situation, and constructing a background separation mask ball C of the target A by using a method in a second stage A Calculate C A Separation of the center of sphere d between the two spheres of mask sphere C from the background of object of interest F, if d is less than or equal to C A And the sum of the radii of the two balls C A Has one of the following relationships with C: containing, intersecting or tangent, that is, object a may have some effect on the focus on object F, and therefore, object a needs to be hidden, otherwise, a is not processed. In a comprehensive view, through the above discrimination based on the center of sphere distance, the adjacent target of the important focus target F can be hidden, so as to realize the visual separation of F from the context (mainly the visual separation from other targets in the context), that is, eliminate the shielding interference of the other targets in the vision, thereby highlighting the important focus target, as shown in fig. 3.
In an embodiment of the present example, the fourth stage: view cone blanking: when the three-dimensional viewpoint changes, even if the adjacent object of the focus object F is blanked between the three-dimensional viewpoint and the focus object, there may still be other objects that cause visual occlusion to the focus object F, resulting in incomplete display of the focus object F, and therefore, further intensive study of the blanking process according to the three-dimensional viewpoint is required.
The specific process of viewpoint cone blanking is as follows:
(1) Viewpoint cone construction
Based on three-dimensional viewpoint o= (X) 0 ,Y 0 ,Z 0 ) Background separation mask sphere center c= (X) of focus object F 1 ,Y 1 ,Z 1 ) Constructing a right circular cone: the vertex of the cone is a three-dimensional viewpoint O, the bottom surface of the cone passes through the sphere center C, the virtual right cone is called as a viewpoint cone, and the maximum opening angle of the cone is marked as theta 0 E (0, pi), namely the maximum included angle between two generatrix on the cone, in practical application, half-opening angle is mostly adopted, namely the included angle theta between the generatrix of the cone and the ray OC 0 /2. As shown in fig. 4.
(2) Viewpoint cone internal target blanking
Traversing each target A in the battlefield situation, if the target A is hidden, not processing, otherwise, marking the sphere center of the background separation mask of the target A as a vector V. Reference is made to fig. 5.
The specific process of the viewpoint cone internal target blanking is as follows:
step1: and judging whether V is in the opening angle range of the viewpoint cone. Calculating the inner product v.f of the vector v= (V-O)/|v-o| and f= (C-O)/|c-o|, where i denote the modulus of the vector, calculate the angle θ=arccoss (v·f), if θ is not less than 0 and not more than θ 0 Step2, turning to Step2, otherwise, turning to Step3 to perform viewpoint cone external target blanking treatment;
step2: constructing a ray r, and an equation of the ray r is as follows: (x (t), y (t), z (t))=o+t (V-O), t is not less than 0, starting from O, passing through the center of sphere V of the target a. And calculating the distance dA between the two points O and A. And (3) obtaining an intersection point S of the ray r and the viewpoint conical bottom plane P, and calculating the distance dS between the two points O and S. If dA is not greater than dS, the sphere center V of the target A is in the viewpoint cone, and Step3 is changed; otherwise, turning to (3) carrying out viewpoint cone external target blanking treatment;
step3: and blanking the target A.
(3) Viewpoint cone external target blanking
And (3) checking the target A, if the target A is in a hidden state, not processing the target A, otherwise, adopting a method for detecting the collision of the line segment and the spherical surface to further judge whether the target A is possibly intersected with the viewpoint cone. As shown in fig. 6.
The specific process of viewpoint cone external target blanking is as follows:
Step1: evenly dividing the boundary of the bottom surface of the point cone (the intersection line of the background separation mask sphere of the concerned object F and the cone bottom plane P), and constructing a division sampling point sequence: s1, S2, … and Sn, in order to ensure accuracy, the sampling points keep certain thickness as much as possible;
step2: constructing a collision detection line segment set: OS1, OS2, …, OSn;
step3: traversing each line segment L=osi, i=1, …, n in the line segment set, judging whether the line segment L intersects with the background separation mask sphere C of the target A, and blanking the target A if the line segment L intersects with the background separation mask sphere C. Note that: the important focus is that the object F has first undergone adjacent object blanking in the second phase, so here the outside of the bottom surface of the viewpoint cone has not been treated again.
In the embodiment of the present example, the present disclosure proposes a context separation 3D lens design method for displaying a focus attention target in a battlefield situation, which focuses on key links such as front-back background separation, adjacent target blanking, viewpoint cone blanking, and the like, so as to achieve good visual separation of the focus attention target from its context, and remove the influence of its context: interference of background surface image colors and the like, visual shielding of other labels and the like are novel three-dimensional interaction modes facing to single targets in a three-dimensional scene; the novel design method of 'viewpoint cone blanking' is provided, a virtual viewpoint cone is constructed through a three-dimensional viewpoint and a background separation mask ball of a focus attention target, the specific implementation of viewpoint cone blanking is realized, and the visual shielding of other targets between the three-dimensional viewpoint and the focus attention target on the focus attention target is effectively eliminated; the present disclosure proposes a new design concept of "background separation mask sphere", which effectively eliminates visual interference of the ground surface remote sensing image color, etc. on the focus attention target in the context, and realizes visual separation of the focus attention target from the context thereof; the novel design method for blanking adjacent targets is provided, blanking judgment is carried out based on the spherical center distance, the shielding influence of other targets in the context of the important focus target is well cleared, the visual separation of the important focus target and the context is realized, and the integrity of highlighting of the important focus target is ensured.
It should be noted that although the steps of the methods of the present disclosure are illustrated in the accompanying drawings in a particular order, this does not require or imply that the steps must be performed in that particular order or that all of the illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
Furthermore, in the present exemplary embodiment, a battlefield situation target highlighting apparatus based on a context separation 3D lens is also provided. Referring to fig. 7, the battlefield situation target highlighting apparatus 400 of the context-based separation 3D lens may include: a front-back background separation module 410, an adjacent target blanking processing module 420, and a viewpoint cone target blanking processing module 430.
Wherein:
the front-back background separation module 410 is configured to calculate a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display based on a preset bounding sphere calculation method, draw a background separation mask sphere based on the three-dimensional bounding sphere, and perform single-color filling rendering on the background separation mask sphere to realize front-back background separation of the target to be highlighted;
The adjacent target blanking processing module 420 is configured to calculate a center distance between the background separation mask ball of the target to be highlighted and the background separation mask balls of the remaining targets, and if the center distance is smaller than a sum of radii of the background separation mask ball of the target to be highlighted and the background separation mask ball of the remaining targets, perform adjacent target blanking processing on the remaining targets;
the viewpoint cone object blanking processing module 430 is configured to generate a viewpoint cone based on the background separation mask sphere of the object to be highlighted, and finish viewpoint cone internal object determination and viewpoint cone external object determination based on the viewpoint cone, so as to implement viewpoint cone internal object blanking processing and viewpoint cone external object blanking processing, respectively, so as to implement visual separation of the object to be highlighted and the rest object.
The specific details of each of the above-mentioned battlefield situation target highlighting means modules based on the context separation 3D lens have been described in detail in a corresponding one of the battlefield situation target highlighting methods based on the context separation 3D lens, and thus will not be described herein.
It should be noted that although several modules or units of a battlefield situation target highlighting apparatus 400 based on a context-splitting 3D lens are mentioned in the above detailed description, this division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
In addition, in an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above method is also provided.
Those skilled in the art will appreciate that the various aspects of the invention may be implemented as a system, method, or program product. Accordingly, aspects of the invention may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
An electronic device 500 according to such an embodiment of the invention is described below with reference to fig. 8. The electronic device 500 shown in fig. 8 is merely an example, and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
As shown in fig. 8, the electronic device 500 is embodied in the form of a general purpose computing device. The components of electronic device 500 may include, but are not limited to: the at least one processing unit 510, the at least one memory unit 520, a bus 530 connecting the different system components (including the memory unit 520 and the processing unit 510), and a display unit 540.
Wherein the storage unit stores program code that is executable by the processing unit 510 such that the processing unit 510 performs steps according to various exemplary embodiments of the present invention described in the above-mentioned "exemplary methods" section of the present specification. For example, the processing unit 510 may perform steps S110 to S130 as shown in fig. 1.
The storage unit 520 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 5201 and/or cache memory unit 5202, and may further include Read Only Memory (ROM) 5203.
The storage unit 520 may also include a program/utility 5204 having a set (at least one) of program modules 5203, such program modules 5205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 550 may be a local bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or using any of a variety of bus architectures.
The electronic device 500 may also communicate with one or more external devices 570 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 500, and/or with any device (e.g., router, modem, etc.) that enables the electronic device 500 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 550. Also, electronic device 500 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 560. As shown, network adapter 560 communicates with other modules of electronic device 500 over bus 550. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 500, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RA ID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium having stored thereon a program product capable of implementing the method described above in the present specification is also provided. In some possible embodiments, the various aspects of the invention may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the invention as described in the "exemplary methods" section of this specification, when said program product is run on the terminal device.
Referring to fig. 9, a program product 600 for implementing the above-described method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a 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.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. 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 of the foregoing. A readable signal medium may also be any readable medium that is not a 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 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.
Program code for carrying out operations 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, 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 computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
Furthermore, the above-described drawings are only schematic illustrations of processes included in the method according to the exemplary embodiment of the present invention, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A battlefield situation target highlighting method based on a context separation 3D lens, the method comprising:
Based on a preset bounding sphere calculation method, calculating a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display, drawing a background separation mask sphere based on the three-dimensional bounding sphere, and performing single-color filling rendering on the background separation mask sphere to realize front-back background separation of the target to be highlighted;
calculating the center distance between the background separation mask ball of the object to be highlighted and the background separation mask balls of the other objects, and if the center distance is smaller than the sum of the radius of the background separation mask ball of the object to be highlighted and the radius of the background separation mask ball of the other objects, carrying out adjacent object blanking treatment on the other objects;
generating a viewpoint cone based on the background separation mask sphere of the target to be highlighted, and respectively completing viewpoint cone internal target judgment and viewpoint cone external target judgment based on the viewpoint cone, so as to respectively realize viewpoint cone internal target blanking processing and viewpoint cone external target blanking processing, thereby realizing the visual separation of the target to be highlighted and the rest targets.
2. The battlefield situation target highlighting method of a context-based separation 3D lens of claim 1, further comprising:
Acquiring a three-dimensional label or a three-dimensional model of a target to be highlighted in the comprehensive battlefield situation display;
a three-dimensional bounding sphere is generated that minimally encloses the three-dimensional label or model based on the three-dimensional label or model.
3. The battlefield situation target highlighting method of a context-based separation 3D lens of claim 2, further comprising:
expanding the radius of the three-dimensional surrounding sphere by a preset proportion;
performing single-color filling rendering on the spherical triangular mesh of the three-dimensional surrounding sphere with the radius expanded by a preset proportion;
and eliminating the triangular surface patches of the three-dimensional view angles of the three-dimensional surrounding sphere with the radius expanded by a preset proportion to generate a background separation mask sphere.
4. The battlefield situation target highlighting method of a context-based separation 3D lens of claim 1, further comprising:
traversing each target in the battlefield situation comprehensive display;
respectively calculating the center distances of the background separation mask balls of the targets to be highlighted and the background separation mask balls of the other targets except the targets to be highlighted in all targets in the battlefield situation comprehensive display;
if the sphere center distance is smaller than the sum of the radius of the background separation mask sphere of the target to be highlighted and the radius of the background separation mask sphere of the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display, judging the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display as conflict targets;
And carrying out adjacent target blanking processing on the conflict targets.
5. The battlefield situation target highlighting method of a context-based separation 3D lens of claim 1, further comprising:
constructing a right cone with a three-dimensional viewpoint as a conical top point and a plane passing through the sphere center of the background separation mask sphere of the target to be highlighted as a conical bottom surface;
and generating a viewpoint cone containing a preset opening angle based on the right cone.
6. The battlefield situation target highlighting method of a context-based separation 3D lens of claim 5, further comprising:
calculating the included angle between the spherical center vector of the background separation mask sphere of the other targets except the target to be highlighted and the preset opening angle in each target in the battlefield situation comprehensive display;
if the included angle is larger than 0 and smaller than half of the preset opening angle, respectively calculating a first distance between a three-dimensional viewpoint and the sphere center of the background separation mask sphere of the rest of the targets except the target to be highlighted in each target in the battlefield situation comprehensive display, a second distance between an extension line of the sphere center of the background separation mask sphere of the rest of the targets except the target to be highlighted in each target in the battlefield situation comprehensive display and the conical bottom surface, and the three-dimensional viewpoint;
If the first distance is smaller than the second distance, judging that other targets except the target to be highlighted in all targets in the battlefield situation comprehensive display are viewpoint cone internal conflict targets;
and carrying out cone inner target blanking processing on the viewpoint cone inner conflict target, otherwise, carrying out cone outer target blanking processing.
7. The battlefield situation target highlighting method of a context-based separation 3D lens of claim 6, further comprising:
dividing the ground boundary of the viewpoint cone by a preset sampling proportion to construct a collision detection line segment set;
if the background separation mask balls of the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display are intersected with the collision detection line segments in the collision detection line segment set, judging that the other targets except the target to be highlighted in each target in the battlefield situation comprehensive display are viewpoint cone external conflict targets;
and carrying out cone external target blanking processing on the viewpoint cone external conflict target.
8. A battlefield situation target highlighting apparatus based on a context separation 3D lens, the apparatus comprising:
The front-back background separation module is used for calculating a three-dimensional bounding sphere of a target to be highlighted in the battlefield situation comprehensive display based on a preset bounding sphere calculation method, drawing a background separation mask sphere based on the three-dimensional bounding sphere, and performing single-color filling rendering on the background separation mask sphere so as to realize front-back background separation of the target to be highlighted;
the adjacent target blanking processing module is used for calculating the sphere center distance between the background separation mask sphere of the target to be highlighted and the background separation mask sphere of the rest target, and if the sphere center distance is smaller than the sum of the radius of the background separation mask sphere of the target to be highlighted and the radius of the background separation mask sphere of the rest target, the rest target is subjected to adjacent target blanking processing;
and the viewpoint cone target blanking processing module is used for generating a viewpoint cone based on the background separation mask sphere of the target to be highlighted, and respectively completing viewpoint cone inner target judgment and viewpoint cone outer target judgment based on the viewpoint cone, so as to respectively realize viewpoint cone inner target blanking processing and viewpoint cone outer target blanking processing, and realize visual separation of the target to be highlighted and the rest target.
9. An electronic device, comprising
A processor; and
a memory having stored thereon computer readable instructions which, when executed by the processor, implement the method according to any of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, implements the method according to any of claims 1 to 7.
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