CN113781603A - Method and device for generating track points, computer equipment and computer storage medium - Google Patents
Method and device for generating track points, computer equipment and computer storage medium Download PDFInfo
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- CN113781603A CN113781603A CN202111081517.4A CN202111081517A CN113781603A CN 113781603 A CN113781603 A CN 113781603A CN 202111081517 A CN202111081517 A CN 202111081517A CN 113781603 A CN113781603 A CN 113781603A
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Abstract
The present disclosure provides a trace point generation method, an apparatus, a computer device, and a computer storage medium, wherein the method includes: acquiring a curve to be drawn; respectively intercepting each section of intercepting curve according to a preset pixel point intercepting range; determining each inflection point corresponding to the curve by comparing the changes of the difference values of the azimuth angles corresponding to the intercepted curves of different sections; and generating and displaying the track points corresponding to the curve according to the determined inflection points. According to the method and the device, the inflection point in the curve is determined preferentially, so that the problem that the inflection point cannot be omitted due to improper setting of the sampling interval in the process of sampling the curve according to the preset sampling interval, so that the curve cannot be represented accurately through the trace point is solved, and the accuracy of representing the curve by the trace point is improved; in addition, the accuracy of inflection point identification is also improved.
Description
Technical Field
The present disclosure relates to the field of computer technologies, and in particular, to a method and an apparatus for generating trace points, a computer device, and a computer storage medium.
Background
With the reform and development of education system, the comprehensive development of training students' moral and mellowry becomes the main task of current education; when training student's fine arts ability, to some students that do not have fine arts foundation, can carry out the fine arts study through the mode of imitative. The copying point in every line segment of the copying picture that supplies student to copy the use generally is that the picture preparation person manually draws out, like this, probably exists when copying the picture comparatively complicated, need consume the drawing that a large amount of time cost could accomplish the copying point, and efficiency is lower.
In order to improve the efficiency of drawing the copy points in the copy picture, the copy points in the copy picture can be determined by using an automatic sampling mode, but when the copy points are determined by using the automatic sampling mode, some more important points (for example, inflection points of curves in the copy picture) in the copy picture are not sampled due to improper selection of a sampling interval, so that the copy picture represented by the copy points is inaccurate.
Disclosure of Invention
The embodiment of the disclosure at least provides a track point generation method, a track point generation device, computer equipment and a computer storage medium.
In a first aspect, an embodiment of the present disclosure provides a track point generation method, including:
acquiring a curve to be drawn;
respectively intercepting each section of intercepting curve according to a preset pixel point intercepting range; wherein, the pixel points between the intercepted adjacent sections of the intercepted curves are overlapped;
determining each inflection point corresponding to the curve by comparing the changes of the difference values of the azimuth angles corresponding to the intercepted curves of different sections; the azimuth angle difference value is the difference of azimuth angles of different line segments in the intercepted curve;
generating and displaying track points corresponding to the curve according to the determined inflection points; and the track points are used for indicating the user to draw a curve.
In a possible implementation manner, intercepting each section of intercepting curve respectively according to a preset pixel point intercepting range includes:
and according to a preset pixel point interception range, sequentially taking each pixel point on the curve as an interception starting point, and respectively intercepting each section of the intercepted curve.
In a possible implementation, the determining the respective inflection points corresponding to the curves by comparing changes of azimuth angle differences corresponding to different sections of the intercepted curves includes:
determining a first interception curve when the corresponding azimuth angle difference value is increased from less than a set threshold value to more than or equal to the set threshold value by comparing the azimuth angle difference values corresponding to different sections of interception curves, and a second interception curve when the corresponding azimuth angle difference value is decreased from more than the set threshold value to less than or equal to the set threshold value, which is intercepted after intercepting the first interception curve;
and determining an inflection point corresponding to the curve based on the first cut curve and the second cut curve.
In one possible embodiment, the azimuth difference is determined according to the following steps:
and aiming at each section of the intercepted curve, determining an azimuth angle difference value corresponding to the section of the intercepted curve based on the azimuth angles respectively corresponding to the front half line segment and the rear half line segment corresponding to the section of the intercepted curve.
In one possible embodiment, determining the first and second truncation curves includes:
if the azimuth angle difference value corresponding to the current-section interception curve is greater than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous-section interception curve of the current-section interception curve is less than the set threshold value, taking the current-section interception curve as the first interception curve;
and if the azimuth angle difference value corresponding to the current section of the intercepted curve is less than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous section of the intercepted curve of the current section of the intercepted curve is greater than the set threshold value, taking the current section of the intercepted curve as the second intercepted curve.
In a possible implementation, the determining an inflection point corresponding to the curve based on the first truncated curve and the second truncated curve includes:
acquiring a first midpoint of the first interception curve and a second midpoint of the second interception curve;
and calculating a midpoint between the first midpoint and the second midpoint, and taking the midpoint as the inflection point.
In a possible implementation manner, the generating and displaying the trace points corresponding to the curve according to the determined inflection points includes:
dividing the curve into a plurality of sampling line segments based on the determined inflection points; the inflection point is an end point of the sampling line section;
sampling from each sampling line segment to obtain a plurality of track points based on a preset sampling interval; the plurality of track points comprise inflection points in a curve;
and taking a plurality of trace points respectively sampled in the plurality of sampling line segments as the trace points corresponding to the curve.
In a second aspect, an embodiment of the present disclosure further provides a trace point generating device, including:
the acquisition module is used for acquiring a curve to be drawn;
the first processing module is used for respectively intercepting each section of intercepting curve according to a preset pixel point intercepting range; wherein, the pixel points between the intercepted adjacent sections of the intercepted curves are overlapped;
the determining module is used for determining each inflection point corresponding to the curve by comparing the change of the azimuth angle difference value corresponding to the intercepted curves of different sections; the azimuth angle difference value is the difference of azimuth angles of different line segments in the intercepted curve;
the second processing module is used for generating and displaying the track points corresponding to the curve according to the determined inflection points; and the track points are used for indicating the user to draw a curve.
In a possible implementation manner, when the first processing module performs the intercepting of each section of the intercepting curve according to the preset pixel point intercepting range, the first processing module is specifically configured to:
and according to a preset pixel point interception range, sequentially taking each pixel point on the curve as an interception starting point, and respectively intercepting each section of the intercepted curve.
In a possible implementation manner, when the determining module is configured to determine each inflection point corresponding to the curve by comparing changes of azimuth difference values corresponding to different cut curves, the determining module is specifically configured to:
determining a first interception curve when the corresponding azimuth angle difference value is increased from less than a set threshold value to more than or equal to the set threshold value by comparing the azimuth angle difference values corresponding to different sections of interception curves, and a second interception curve when the corresponding azimuth angle difference value is decreased from more than the set threshold value to less than or equal to the set threshold value, which is intercepted after intercepting the first interception curve;
and determining an inflection point corresponding to the curve based on the first cut curve and the second cut curve.
In one possible embodiment, the determination module determines the azimuth difference value according to the following steps:
and aiming at each section of the intercepted curve, determining an azimuth angle difference value corresponding to the section of the intercepted curve based on the azimuth angles respectively corresponding to the front half line segment and the rear half line segment corresponding to the section of the intercepted curve.
In a possible implementation manner, when the determining module determines the first clipping curve and the second clipping curve, the determining module is specifically configured to:
if the azimuth angle difference value corresponding to the current-section interception curve is greater than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous-section interception curve of the current-section interception curve is less than the set threshold value, taking the current-section interception curve as the first interception curve;
and if the azimuth angle difference value corresponding to the current section of the intercepted curve is less than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous section of the intercepted curve of the current section of the intercepted curve is greater than the set threshold value, taking the current section of the intercepted curve as the second intercepted curve.
In a possible implementation manner, when the determining module determines the inflection point corresponding to the curve based on the first truncated curve and the second truncated curve, the determining module is specifically configured to:
acquiring a first midpoint of the first interception curve and a second midpoint of the second interception curve;
and calculating a midpoint between the first midpoint and the second midpoint, and taking the midpoint as the inflection point.
In a possible implementation manner, when the second processing module executes the generating and displaying of the trace points corresponding to the curve according to the determined inflection points, the second processing module is specifically configured to:
dividing the curve into a plurality of sampling line segments based on the determined inflection points; the inflection point is an end point of the sampling line section;
sampling from each sampling line segment to obtain a plurality of track points based on a preset sampling interval; the plurality of track points comprise inflection points in a curve;
and taking a plurality of trace points respectively sampled in the plurality of sampling line segments as the trace points corresponding to the curve.
In a third aspect, alternative implementations of the present disclosure also provide a computer device, including: a processor, a memory, the memory storing machine-readable instructions executable by the processor, the processor being configured to execute the machine-readable instructions stored in the memory, the machine-readable instructions, when executed by the processor, performing the steps of the trace point generation method according to the first aspect, or any one of the possible embodiments of the first aspect.
In a fourth aspect, alternative implementations of the present disclosure further provide a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps of the track point generating method according to the first aspect or any one of the possible implementations of the first aspect are performed.
In the trace point generation method provided by the embodiment of the disclosure, each section of intercepted curve is intercepted according to a preset pixel point interception range, and each inflection point corresponding to the curve is determined by comparing the change of azimuth angle difference values corresponding to different sections of intercepted curves; after each inflection point corresponding to the curve is determined, track points corresponding to the curve can be generated and displayed according to the determined inflection points, so that a user is instructed to draw the curve through the track points; here, through the inflection point in the predetermined curve, avoided according to the in-process that preset sampling interval sampled to the curve, because sampling interval sets up improperly, cause and omit the inflection point, lead to the unable problem through the accurate curve of track point representation to the degree of accuracy of track point representation curve has been improved.
In addition, in the embodiment of the present disclosure, each pixel point on the curve may be sequentially used as an interception starting point, a plurality of sections of intercepted curves corresponding to the curve to be drawn (the pixel points between the intercepted curves are overlapped), and a turning change between the intercepted curves is determined by comparing changes of azimuth angle differences corresponding to the intercepted curves, so as to determine each inflection point corresponding to the curve, thereby improving accuracy of inflection point identification.
For the description of the effects of the track point generating device, the computer device, and the computer-readable storage medium, reference is made to the description of the track point generating method, and details are not repeated here.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly described below, and the drawings herein incorporated in and forming a part of the specification illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the technical solutions of the present disclosure. It is appreciated that the following drawings depict only certain embodiments of the disclosure and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.
Fig. 1 shows a flowchart of a trace point generation method provided by an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating a curve to be drawn, which includes multiple segments of truncated curves, in the trace point generation method provided by the embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating an intercepted curve indicating a difference in azimuth in the trace point generation method provided in the embodiment of the present disclosure;
fig. 4 is a schematic diagram illustrating a curve to be plotted, where the curve includes a first truncated curve and a second truncated curve, in the trace point generation method provided by the embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating a curve to be plotted indicating an inflection point in the trace point generation method provided by the embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating another curve to be plotted indicating an inflection point in the trace point generation method provided by the embodiment of the present disclosure;
fig. 7 is a schematic diagram illustrating a method for generating trace points, in which a curve to be plotted is represented by a plurality of trace points in the trace point generating method provided by the embodiment of the present disclosure;
fig. 8 is a schematic diagram illustrating a trace point generating apparatus provided in an embodiment of the present disclosure;
fig. 9 shows a schematic diagram of a computer device provided by an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. The components of embodiments of the present disclosure, as generally described and illustrated herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present disclosure is not intended to limit the scope of the disclosure, as claimed, but is merely representative of selected embodiments of the disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the disclosure without making creative efforts, shall fall within the protection scope of the disclosure.
The above-mentioned drawbacks are the results of the inventor after practical and careful study, and therefore, the discovery process of the above-mentioned problems and the solutions proposed by the present disclosure to the above-mentioned problems should be the contribution of the inventor in the process of the present disclosure.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
To facilitate understanding of the present embodiment, first, a detailed description is given to a trace point generating method disclosed in the embodiments of the present disclosure, where an execution subject of the trace point generating method provided in the embodiments of the present disclosure is generally a computer device with certain computing capability, and the computer device includes, for example: a terminal device, which may be a User Equipment (UE), a mobile device, a User terminal, a cellular phone, a cordless phone, a Personal Digital Assistant (PDA), a handheld device, a computing device, a vehicle mounted device, a wearable device, or a server or other processing device. In some possible implementations, the trace point generating method may be implemented by a processor calling computer readable instructions stored in a memory.
Referring to fig. 1, a flowchart of a trace point generating method provided in the embodiment of the present disclosure is shown, where the trace point generating method includes S101 to S104, where:
and S101, acquiring a curve to be drawn.
It should be noted that the track point generation method provided by the embodiment of the present disclosure may be applied to any scene that needs to process a track line and generate a track point for indicating the track line; for example, the method can be applied to a copying scene, any curve in a copying picture needing copying is processed to generate track points for indicating the curve, and the track points are displayed for copying by students, namely curve drawing; the method can also be applied to urban construction scenes, processes the route to be planned, and generates track points for indicating the planned route, so that information such as speed, acceleration and the like of the vehicle can be planned based on the track points for indicating the route to be planned; the method can be applied to a scene for researching the running track of the vehicle or the robot, the running track of the vehicle or the robot can be processed in the scene, track points for indicating the running track are generated, and the performance and the like of the vehicle or the robot are further researched and improved based on the speed information, the acceleration information, the pose information and the like corresponding to each track point.
Based on this, the curve to be plotted may include, for example, but is not limited to: at least one of any curve contained in the copying picture in the copying scene, a route to be planned in the city planning scene, and a driving route of a vehicle or a robot and the like; in the embodiment of the present disclosure, a detailed description is given by taking an example in which the track point generation method is applied to a copy scene, and a curve to be drawn includes any curve included in a copy picture in the copy scene.
Receiving the foregoing S101, the method for generating trace points provided in the embodiment of the present disclosure further includes:
s102, respectively intercepting each section of intercepting curve according to a preset pixel point intercepting range; and overlapping the pixel points between the intercepted adjacent curves.
In the embodiment of the present disclosure, in order to solve the problem in the prior art that in the conventional method for identifying an inflection point: the method for comparing the azimuth difference value of two adjacent broken lines in the curve with the preset angle limit value can solve the problem that the inflection point in the curve is inaccurate, can intercept the curve to be drawn into a plurality of sections of intercepted curves (the pixel points between the intercepted curves are overlapped), and then determine each inflection point corresponding to the curve by comparing the change of the azimuth difference value corresponding to each intercepted curve based on the following S103.
Here, the preset pixel point interception range may include, for example, 2m +1, and generally, m is set to be a positive integer between 1 and 10 in order to improve the accuracy of inflection point identification; generally, the smaller m is, the higher the accuracy of inflection point identification is; the specific preset pixel point interception range can be set according to actual needs, and is not particularly limited.
In addition, the accuracy of inflection point identification is related to the pixel point contact degree between the intercepted adjacent section curves, and the higher the contact degree of the pixel points between the intercepted adjacent section curves is, the higher the accuracy of inflection point identification is. For example, each pixel point is respectively used as an intercepting starting point to intercept the curve, and only one pixel point between adjacent curves is different at the moment.
In specific implementation, each pixel point on the curve can be sequentially used as an intercepting starting point according to a preset pixel point intercepting range, and each section of the intercepting curve is respectively intercepted; here, only one different pixel point exists between the intercepted curves of the adjacent sections in the intercepted curves, and the accuracy of inflection point identification at this time is the highest.
Illustratively, if m is equal to 3, the preset pixel point interception range includes 7 pixel points; firstly, taking an initial pixel point a of a curve to be drawn as an intercepting starting point, and taking 7 pixel points as intercepting lengths to determine an intercepting curve a corresponding to the curve to be drawn; then, taking the next pixel point b adjacent to the initial pixel point a of the curve to be drawn as an interception starting point, and taking 7 pixel points as interception lengths to determine an interception curve b corresponding to the curve to be drawn; then, taking the next pixel point c adjacent to the pixel point b in the curve to be drawn as an interception starting point, and taking 7 pixel points as interception lengths to determine an interception curve c corresponding to the curve to be drawn; based on the mode, moving a pixel point on the curve to be drawn in sequence, taking 7 pixel points as the intercepting length, intercepting the curve until the terminal pixel point of the curve to be drawn is intercepted, and thus obtaining each section of the intercepted curve corresponding to the curve to be drawn; for example, if the curve to be drawn includes 21 pixel points, 7 pixel points are specifically used as the cut length, and a schematic diagram for cutting the curve to be drawn may be as shown in fig. 2, where the schematic diagram shows 21 pixel points (i.e., an initial pixel point a, a next pixel point b adjacent to the initial pixel point a, a next pixel point c adjacent to the initial pixel point b, a next pixel point t adjacent to the pixel point s, and a next pixel point u adjacent to the pixel point t) included in the curve to be drawn, and 15 cut curves (i.e., a cut curve a, a cut curve b, a.once, and a cut curve o) corresponding to the curve to be drawn, and only three cut curves (i.e., a cut curve b, and a cut curve o) in the 15 cut curves are shown in fig. 2; the intercepting curve a is composed of a pixel point a, a pixel point b, a pixel point c, a pixel point d, a pixel point e, a pixel point f and a pixel point g; the intercepting curve b is composed of a pixel point b, a pixel point c, a pixel point d, a pixel point e, a pixel point f, a pixel point g and a pixel point h; the interception curve o is composed of a pixel o, a pixel p, a pixel q, a pixel r, a pixel s, a pixel t and a pixel u.
Receiving the foregoing S102, the method for generating trace points provided in the embodiment of the present disclosure further includes:
s103, determining each inflection point corresponding to the curve by comparing the changes of the difference values of the azimuth angles corresponding to the intercepted curves of different sections; the difference in azimuth comprises a difference in azimuth for different segments in the truncated curve.
The inflection point may include, but is not limited to, a point connecting two segments of the curve with different bending directions, and a turning point connecting two segments of the curve with a turning relationship; the azimuth angle includes: a horizontal included angle from a north-pointing direction line of a certain point to the target direction along the clockwise direction; here, the azimuth difference value includes the difference between azimuths of two different segments before and after the cut curve, and may include, but is not limited to: the difference between the azimuth angles of the front and rear half sections in the intercepted curve (i.e., the front and rear half sections formed by using the midpoint of the intercepted curve as a boundary), and the difference between the azimuth angles of the front and rear different line segments in the intercepted curve (here, the front and rear different line segments in the intercepted curve may be the front and rear half sections formed by using the non-midpoint of the intercepted curve as a boundary). For example, a target point (which may be a midpoint) is selected from the clipping curve, and an angle between a direction pointing from the clipping start point to the target point and a direction pointing from the target point to the clipping end point is calculated as an azimuth.
For example, the azimuth angle difference corresponding to each truncated curve may be determined by the following method: and aiming at each section of the intercepted curve, determining an azimuth angle difference value corresponding to the section of the intercepted curve based on the azimuth angles respectively corresponding to the front half line segment and the rear half line segment corresponding to the section of the intercepted curve.
Specifically, for each section of the intercepted curve, taking the midpoint of the section of the intercepted curve as a boundary, dividing the section of the intercepted curve into a front half section and a rear half section, taking the intercepted starting point in the intercepted curve as a starting point, and calculating the azimuth angle alpha of a line segment (namely the front half section) between the intercepted starting point and the midpoint in the intercepted curve; meanwhile, the azimuth angle beta of a line segment (namely a second half line segment) between the midpoint of the intercepted curve and the intercepted end point of the intercepted curve is calculated by taking the midpoint of the intercepted curve as a starting point; and subtracting the absolute value of the difference value between the azimuth angles beta and alpha from the azimuth angle beta to serve as the azimuth angle difference value corresponding to the section of intercepting curve.
Exemplarily, if the interception curve is an interception curve a in fig. 2, an interception starting point of the interception curve a is a pixel point a, a midpoint of the interception curve a is a pixel point d, and an interception ending point of the interception curve a is a pixel point g, a first half segment corresponding to the interception curve a is a segment 1 from the pixel point a to the pixel point d, and a second half segment corresponding to the interception curve a is a segment 2 from the pixel point d to the pixel point g; thus, the azimuth angle α is a horizontal included angle from the north arrow of the pixel point a to the line segment 1 along the clockwise direction; the azimuth angle beta is a horizontal included angle from the north arrow of the pixel point d to the line segment 2 in the clockwise direction; specifically, the schematic diagram including the azimuth angle α and the azimuth angle β may be as shown in fig. 3, where fig. 3 shows a truncated curve a, a line segment 1, a line segment 2, and the azimuth angle α and the azimuth angle β; the absolute value of the difference between the azimuth angles β and α in fig. 3 is subtracted from the azimuth angle β to obtain the azimuth angle difference γ corresponding to the truncated curve, i.e., γ ═ β - α |.
In a specific implementation, after the azimuth angle difference value corresponding to each section of the intercepted curve is determined, the inflection point in the curve to be drawn may be determined according to a variation rule corresponding to the azimuth angle difference value corresponding to each section of the intercepted curve (that is, when the intercepted curve gradually approaches the inflection point in the curve, the azimuth angle difference value corresponding to the intercepted curve gradually increases, and when the intercepted curve gradually leaves the inflection point in the curve, the azimuth angle difference value corresponding to the intercepted curve gradually decreases), which is specifically described as follows: determining a first interception curve when the corresponding azimuth angle difference value is increased from being smaller than a set threshold value to being larger than or equal to the set threshold value by comparing the azimuth angle difference values corresponding to different sections of interception curves, and determining a second interception curve when the corresponding azimuth angle difference value is decreased from being larger than the set threshold value to being smaller than or equal to the set threshold value, wherein the second interception curve is intercepted after the first interception curve is intercepted and is obtained when the corresponding azimuth angle difference value is larger than the set threshold value; and determining an inflection point corresponding to the curve based on the first cut curve and the second cut curve.
The set threshold may be a critical angle value of the azimuth difference set according to actual needs, and is not specifically limited herein; in implementation, the accuracy of inflection point identification can be improved by adjusting the value of the set threshold; when the value of the set threshold is smaller, the accuracy of inflection point identification is lower; when the value of the set threshold is relatively large, the accuracy of inflection point identification is relatively high; for example, when the threshold is set to 5 degrees, the truncated curve obtained when all the azimuth angle differences are increased from less than 5 degrees to greater than or equal to 5 degrees is used as the first truncated curve, and the first truncated curve includes a curve in which the bending degree is increased by greater than or equal to 5 degrees but does not include an inflection point; and the intercepted curve when the all azimuth angle difference is reduced from more than 5 degrees to less than or equal to 5 degrees is taken as a second intercepted curve, and the second intercepted curve comprises a curve of which the bending degree is reduced by more than or equal to 5 degrees but does not comprise an inflection point; therefore, when inflection point identification is carried out based on the first interception curve and the second interception curve, points which are not inflection points can be identified, so that the accuracy of inflection point identification is low; therefore, it is necessary to set a relatively appropriate threshold value according to at least one of actual needs and a degree of curvature of the curve to more accurately identify an inflection point in the curve and improve accuracy of inflection point identification.
In a specific implementation, after the azimuth difference corresponding to each truncated curve is determined, the first truncated curve and the second truncated curve may be determined according to the azimuth difference corresponding to each truncated curve and a set threshold, which is described in detail as follows: if the azimuth angle difference value corresponding to the current section of interception curve is greater than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous section of interception curve of the current section of interception curve is less than the set threshold value, taking the current section of interception curve as a first interception curve; and if the azimuth angle difference value corresponding to the current section of the intercepted curve is less than or equal to the set threshold value and the azimuth angle difference value corresponding to the previous section of the intercepted curve of the current section of the intercepted curve is greater than the set threshold value, taking the current section of the intercepted curve as a second intercepted curve.
Exemplarily, each section of the interception curve is used as a current section of the interception curve, an azimuth angle difference value corresponding to the current section of the interception curve is compared with a set threshold value, and the current section of the interception curve is used as a first interception curve under the condition that the azimuth angle difference value corresponding to the current section of the interception curve is larger than or equal to the set threshold value and the azimuth angle difference value corresponding to a section of the interception curve above the current section of the interception curve is smaller than the set threshold value; under the condition that the azimuth angle difference value corresponding to the current intercepting curve is smaller than or equal to the set threshold value and the azimuth angle difference value corresponding to the previous intercepting curve of the current intercepting curve is larger than the set threshold value, taking the current intercepting curve as a second intercepting curve; if the display interface of each section of the interception curve is shown in fig. 2, the specific first interception curve is an interception curve d (i.e., an interception curve formed by a pixel point d, a pixel point e, a pixel point f, a pixel point g, a pixel point h, a pixel point i, and a pixel point j), the second interception curve is an interception curve h (i.e., an interception curve formed by a pixel point h, a pixel point i, a pixel point j, a pixel point k, a pixel point l, a pixel point m, and a pixel point n), and the specific schematic diagram indicating the first interception curve and the second interception curve is shown in fig. 4.
After the first truncated curve and the second truncated curve are determined, the inflection point corresponding to the curve may be determined based on the determined first truncated curve and the second truncated curve, which is described in detail as follows: acquiring a first midpoint of the first interception curve and a second midpoint of the second interception curve; a midpoint between the first midpoint and the second midpoint is calculated, and the midpoint is taken as an inflection point.
For example, if the determined first truncated curve and second truncated curve are shown in fig. 4, the first midpoint of the first truncated curve (i.e., the midpoint of truncated curve d) is determined: a curved pixel point g; determining the second midpoint of the second truncated curve (i.e., the midpoint of truncated curve h): a curved pixel point k; and (3) the midpoint in a line segment formed by the first midpoint (namely the pixel point g of the curve) and the second midpoint (the pixel point k of the curve) is: a pixel point i of the curve is used as an inflection point of the curve, and a specific schematic diagram indicating the inflection point of the curve is shown in fig. 5.
Receiving the foregoing S103, the method for generating trace points provided in the embodiment of the present disclosure further includes:
s104, generating and displaying track points corresponding to the curve according to the determined inflection points; and the track points are used for indicating the user to draw a curve.
In a specific implementation, in order to avoid a problem that, when a curve is sampled in a copying scene, an inflection point in the curve cannot be identified due to an improper selected sampling interval, and a picture to be copied cannot be accurately represented by a sampling point, the inflection point corresponding to the curve may be determined first based on the specific implementation manners shown in the embodiments S101 to S103 of the present disclosure, and then a trace point corresponding to the curve is generated according to each determined inflection point, which is specifically described as follows: dividing the curve into a plurality of sampling line segments based on the determined inflection points; sampling from each sampling line segment to obtain a plurality of track points based on a preset sampling interval; and taking a plurality of trace points respectively sampled in the plurality of sampling line segments as trace points corresponding to the curve.
Each sampling line segment in the plurality of sampling line segments takes an inflection point as an end point; the plurality of trace points obtained by sampling comprise inflection points in the curve.
Exemplarily, if the curve to be drawn is as shown in fig. 6, if the preset pixel clipping range includes: 7 pixel points, with a threshold set at 30 degrees, based on the specific implementation shown in the embodiments S101 to S103 of the present disclosure, the determined inflection points are as shown in fig. 6, 11 inflection points are shown in fig. 6, and after the inflection point corresponding to the curve to be drawn in fig. 6 is determined, the inflection point, and the starting point and the ending point of the curve to be drawn may be respectively used as the end points of the sampling line segments to divide the curve to be drawn into 12 sampling line segments; then based on the preset sampling interval: the method comprises the following steps of sampling the curve to be drawn by 10 pixel points, determining a plurality of track points (wherein the track points comprise inflection points) in each sampling line segment, and displaying the plurality of track points, wherein a specific display interface can be as shown in fig. 7.
In the embodiment of the disclosure, each section of the intercepted curve is intercepted according to a preset pixel point intercepting range, and each inflection point corresponding to the curve is determined by comparing the change of the azimuth angle difference value corresponding to different sections of the intercepted curve; after each inflection point corresponding to the curve is determined, track points corresponding to the curve can be generated and displayed according to the determined inflection points, so that a user is instructed to draw the curve through the track points; here, through the inflection point in the predetermined curve, avoided according to the in-process that preset sampling interval sampled to the curve, because sampling interval sets up improperly, cause and omit the inflection point, lead to the unable problem through the accurate curve of track point representation to the degree of accuracy of track point representation curve has been improved.
In addition, in the embodiment of the present disclosure, each pixel point on the curve may be sequentially used as an interception starting point, a plurality of sections of intercepted curves corresponding to the curve to be drawn (the pixel points between the intercepted curves are overlapped), and a turning change between the intercepted curves is determined by comparing changes of azimuth angle differences corresponding to the intercepted curves, so as to determine each inflection point corresponding to the curve, thereby improving accuracy of inflection point identification.
It will be understood by those skilled in the art that in the method of the present invention, the order of writing the steps does not imply a strict order of execution and any limitations on the implementation, and the specific order of execution of the steps should be determined by their function and possible inherent logic.
Based on the same inventive concept, the embodiment of the present disclosure further provides a trace point generating device corresponding to the trace point generating method, and because the principle of solving the problem of the device in the embodiment of the present disclosure is similar to that of the trace point generating method in the embodiment of the present disclosure, the implementation of the device may refer to the implementation of the method, and repeated details are not described again.
Referring to fig. 8, a schematic diagram of a trace point generating device 800 provided in an embodiment of the present disclosure is shown, where the trace point generating device includes: an acquisition module 801, a first processing module 802, a determination module 803 and a second processing module 804; wherein:
an obtaining module 801, configured to obtain a curve to be drawn.
The first processing module 802 is configured to respectively intercept each segment of the interception curve according to a preset pixel point interception range; and the pixels between the intercepted adjacent sections of the intercepted curves are overlapped.
A determining module 803, configured to determine each inflection point corresponding to the curve by comparing changes in azimuth difference values corresponding to different sections of intercepted curves; the azimuth difference value is the difference of azimuths of different line segments in the intercepted curve.
The second processing module 804 is configured to generate and display trace points corresponding to the curve according to the determined inflection points; and the track points are used for indicating the user to draw a curve.
In a possible implementation manner, when the first processing module 802 performs the intercepting of each section of the intercepting curve according to the preset pixel point intercepting range, it is specifically configured to: and according to a preset pixel point interception range, sequentially taking each pixel point on the curve as an interception starting point, and respectively intercepting each section of the intercepted curve.
In a possible implementation manner, the determining module 803, when performing the determining of the inflection points corresponding to the curve by comparing changes of the azimuth difference values corresponding to the different cut curves, is specifically configured to: determining a first interception curve when the corresponding azimuth angle difference value is increased from less than a set threshold value to more than or equal to the set threshold value by comparing the azimuth angle difference values corresponding to different sections of interception curves, and a second interception curve when the corresponding azimuth angle difference value is decreased from more than the set threshold value to less than or equal to the set threshold value, which is intercepted after intercepting the first interception curve; and determining an inflection point corresponding to the curve based on the first cut curve and the second cut curve.
In a possible implementation, the determining module 803 determines the azimuth difference value according to the following steps: and aiming at each section of the intercepted curve, determining an azimuth angle difference value corresponding to the section of the intercepted curve based on the azimuth angles respectively corresponding to the front half line segment and the rear half line segment corresponding to the section of the intercepted curve.
In a possible implementation manner, when the determining module 803 determines the first truncated curve and the second truncated curve, it is specifically configured to: if the azimuth angle difference value corresponding to the current-section interception curve is greater than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous-section interception curve of the current-section interception curve is less than the set threshold value, taking the current-section interception curve as the first interception curve; and if the azimuth angle difference value corresponding to the current section of the intercepted curve is less than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous section of the intercepted curve of the current section of the intercepted curve is greater than the set threshold value, taking the current section of the intercepted curve as the second intercepted curve.
In a possible implementation manner, the determining module 803, when performing the determining of the inflection point corresponding to the curve based on the first truncated curve and the second truncated curve, is specifically configured to: acquiring a first midpoint of the first interception curve and a second midpoint of the second interception curve; and calculating a midpoint between the first midpoint and the second midpoint, and taking the midpoint as the inflection point.
In a possible implementation manner, when the second processing module 804 executes the generating and displaying of the trace points corresponding to the curve according to the determined inflection points, the second processing module is specifically configured to: dividing the curve into a plurality of sampling line segments based on the determined inflection points; the inflection point is an end point of the sampling line section; sampling from each sampling line segment to obtain a plurality of track points based on a preset sampling interval; the plurality of track points comprise inflection points in a curve; and taking a plurality of trace points respectively sampled in the plurality of sampling line segments as the trace points corresponding to the curve.
In the embodiment of the disclosure, each section of the intercepted curve is intercepted according to a preset pixel point intercepting range, and each inflection point corresponding to the curve is determined by comparing the change of the azimuth angle difference value corresponding to different sections of the intercepted curve; after each inflection point corresponding to the curve is determined, track points corresponding to the curve can be generated and displayed according to the determined inflection points, so that a user is instructed to draw the curve through the track points; here, through the inflection point in the predetermined curve, avoided according to the in-process that preset sampling interval sampled to the curve, because sampling interval sets up improperly, cause and omit the inflection point, lead to the unable problem through the accurate curve of track point representation to the degree of accuracy of track point representation curve has been improved.
In addition, in the embodiment of the present disclosure, each pixel point on the curve may be sequentially used as an interception starting point, a plurality of sections of intercepted curves corresponding to the curve to be drawn (the pixel points between the intercepted curves are overlapped), and a turning change between the intercepted curves is determined by comparing changes of azimuth angle differences corresponding to the intercepted curves, so as to determine each inflection point corresponding to the curve, thereby improving accuracy of inflection point identification.
The description of the processing flow of each module in the device and the interaction flow between the modules may refer to the related description in the above method embodiments, and will not be described in detail here.
Based on the same technical concept, the embodiment of the application also provides computer equipment. Referring to fig. 9, a schematic structural diagram of a computer device 900 provided in the embodiment of the present application includes a processor 901, a memory 902, and a bus 903. The memory 902 is used for storing execution instructions, and includes a memory 9021 and an external memory 9022; the memory 9021 is also referred to as an internal memory, and is configured to temporarily store operation data in the processor 901 and data exchanged with an external memory 9022 such as a hard disk, the processor 901 exchanges data with the external memory 9022 through the memory 9021, and when the computer device 900 is operated, the processor 901 communicates with the memory 902 through the bus 903, so that the processor 901 executes the following instructions:
acquiring a curve to be drawn; respectively intercepting each section of intercepting curve according to a preset pixel point intercepting range; wherein, the pixel points between the intercepted adjacent sections of the intercepted curves are overlapped; determining each inflection point corresponding to the curve by comparing the changes of the difference values of the azimuth angles corresponding to the intercepted curves of different sections; the azimuth angle difference value is the difference of azimuth angles of different line segments in the intercepted curve; generating and displaying track points corresponding to the curve according to the determined inflection points; and the track points are used for indicating the user to draw a curve.
The specific processing flow of the processor 901 may refer to the description of the above method embodiment, and is not described herein again.
The embodiments of the present disclosure also provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the trace point generating method in the foregoing method embodiments are executed. The storage medium may be a volatile or non-volatile computer-readable storage medium.
The embodiments of the present disclosure also provide a computer program product, where the computer program product carries a program code, and instructions included in the program code may be used to execute the steps of the trace point generating method in the foregoing method embodiments, which may be referred to specifically for the foregoing method embodiments, and are not described herein again.
The computer program product may be implemented by hardware, software or a combination thereof. In an alternative embodiment, the computer program product is embodied in a computer storage medium, and in another alternative embodiment, the computer program product is embodied in a Software product, such as a Software Development Kit (SDK), or the like.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present disclosure. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present disclosure, which are used for illustrating the technical solutions of the present disclosure and not for limiting the same, and the scope of the present disclosure is not limited thereto, and although the present disclosure is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive of the technical solutions described in the foregoing embodiments or equivalent technical features thereof within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present disclosure, and should be construed as being included therein. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A method for generating trace points is characterized by comprising the following steps:
acquiring a curve to be drawn;
respectively intercepting each section of intercepting curve according to a preset pixel point intercepting range; wherein, the pixel points between the intercepted adjacent sections of the intercepted curves are overlapped;
determining each inflection point corresponding to the curve by comparing the changes of the difference values of the azimuth angles corresponding to the intercepted curves of different sections; the azimuth angle difference value is the difference of azimuth angles of different line segments in the intercepted curve;
generating and displaying track points corresponding to the curve according to the determined inflection points; and the track points are used for indicating the user to draw a curve.
2. The method for generating trace points according to claim 1, wherein the step of respectively intercepting each segment of the intercepted curve according to a preset pixel point intercepting range comprises:
and according to a preset pixel point interception range, sequentially taking each pixel point on the curve as an interception starting point, and respectively intercepting each section of the intercepted curve.
3. The trace point generation method according to claim 1, wherein determining respective inflection points corresponding to the curves by comparing changes in difference values of azimuth angles corresponding to different sections of the intercepted curves comprises:
determining a first interception curve when the corresponding azimuth angle difference value is increased from less than a set threshold value to more than or equal to the set threshold value by comparing the azimuth angle difference values corresponding to different sections of interception curves, and a second interception curve when the corresponding azimuth angle difference value is decreased from more than the set threshold value to less than or equal to the set threshold value, which is intercepted after intercepting the first interception curve;
and determining an inflection point corresponding to the curve based on the first cut curve and the second cut curve.
4. The trace point generation method of claim 1, wherein the azimuth difference value is determined according to the following steps:
and aiming at each section of the intercepted curve, determining an azimuth angle difference value corresponding to the section of the intercepted curve based on the azimuth angles respectively corresponding to the front half line segment and the rear half line segment corresponding to the section of the intercepted curve.
5. The trace point generation method of claim 3, wherein determining the first and second cut curves comprises:
if the azimuth angle difference value corresponding to the current-section interception curve is greater than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous-section interception curve of the current-section interception curve is less than the set threshold value, taking the current-section interception curve as the first interception curve;
and if the azimuth angle difference value corresponding to the current section of the intercepted curve is less than or equal to a set threshold value and the azimuth angle difference value corresponding to the previous section of the intercepted curve of the current section of the intercepted curve is greater than the set threshold value, taking the current section of the intercepted curve as the second intercepted curve.
6. The trace point generation method according to claim 3, wherein determining the inflection point corresponding to the curve based on the first truncated curve and the second truncated curve comprises:
acquiring a first midpoint of the first interception curve and a second midpoint of the second interception curve;
and calculating a midpoint between the first midpoint and the second midpoint, and taking the midpoint as the inflection point.
7. The trace point generation method according to claim 1, wherein the generating and displaying the trace points corresponding to the curve according to the determined inflection points includes:
dividing the curve into a plurality of sampling line segments based on the determined inflection points; the inflection point is an end point of the sampling line section;
sampling from each sampling line segment to obtain a plurality of track points based on a preset sampling interval; the plurality of track points comprise inflection points in a curve;
and taking a plurality of trace points respectively sampled in the plurality of sampling line segments as the trace points corresponding to the curve.
8. A trace point generating device, comprising:
the acquisition module is used for acquiring a curve to be drawn;
the first processing module is used for respectively intercepting each section of intercepting curve according to a preset pixel point intercepting range; wherein, the pixel points between the intercepted adjacent sections of the intercepted curves are overlapped;
the determining module is used for determining each inflection point corresponding to the curve by comparing the change of the azimuth angle difference value corresponding to the intercepted curves of different sections; the azimuth angle difference value is the difference of azimuth angles of different line segments in the intercepted curve;
the second processing module is used for generating and displaying the track points corresponding to the curve according to the determined inflection points; and the track points are used for indicating the user to draw a curve.
9. A computer device, comprising: a processor, a memory storing machine-readable instructions executable by the processor, the processor for executing the machine-readable instructions stored in the memory, the machine-readable instructions, when executed by the processor, the processor performing the steps of the trace point generation method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when executed by a computer device, performs the steps of the trace point generation method according to any one of claims 1 to 7.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148494A (en) * | 1989-04-28 | 1992-09-15 | Societe Nationale Elf Aquitaine | Process for automatic plotting and assistance interpretation of seismic cross-sections in particular using image analysis techniques |
| TW200723113A (en) * | 2005-12-01 | 2007-06-16 | Ind Tech Res Inst | Trajectory recognition method |
| WO2012171190A1 (en) * | 2011-06-15 | 2012-12-20 | 青岛海信信芯科技有限公司 | Television, control method and control device for the television |
| CN105910639A (en) * | 2016-04-01 | 2016-08-31 | 南京泰司空间信息科技有限公司 | Route segmentation method based on turning points and system |
| CN110069585A (en) * | 2017-12-05 | 2019-07-30 | 腾讯科技（深圳）有限公司 | Treating method and apparatus, storage medium and the electronic device of track point data |
| CN112528807A (en) * | 2020-12-04 | 2021-03-19 | 深圳市优必选科技股份有限公司 | Method and device for predicting driving track, electronic equipment and storage medium |
| CN113108806A (en) * | 2021-05-13 | 2021-07-13 | 重庆紫光华山智安科技有限公司 | Path planning method, device, equipment and medium |
| CN113341962A (en) * | 2021-05-28 | 2021-09-03 | 广州科语机器人有限公司 | Dynamic window tracking optimization method, device, terminal and storage medium |
-
2021
- 2021-09-15 CN CN202111081517.4A patent/CN113781603B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148494A (en) * | 1989-04-28 | 1992-09-15 | Societe Nationale Elf Aquitaine | Process for automatic plotting and assistance interpretation of seismic cross-sections in particular using image analysis techniques |
| TW200723113A (en) * | 2005-12-01 | 2007-06-16 | Ind Tech Res Inst | Trajectory recognition method |
| WO2012171190A1 (en) * | 2011-06-15 | 2012-12-20 | 青岛海信信芯科技有限公司 | Television, control method and control device for the television |
| CN105910639A (en) * | 2016-04-01 | 2016-08-31 | 南京泰司空间信息科技有限公司 | Route segmentation method based on turning points and system |
| CN110069585A (en) * | 2017-12-05 | 2019-07-30 | 腾讯科技（深圳）有限公司 | Treating method and apparatus, storage medium and the electronic device of track point data |
| CN112528807A (en) * | 2020-12-04 | 2021-03-19 | 深圳市优必选科技股份有限公司 | Method and device for predicting driving track, electronic equipment and storage medium |
| CN113108806A (en) * | 2021-05-13 | 2021-07-13 | 重庆紫光华山智安科技有限公司 | Path planning method, device, equipment and medium |
| CN113341962A (en) * | 2021-05-28 | 2021-09-03 | 广州科语机器人有限公司 | Dynamic window tracking optimization method, device, terminal and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 陆玉立: "三维人体动画单目视频运动轨迹准确跟踪方法研究", 《长春大学学报》, vol. 29, no. 8 * |
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|---|---|
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