CN112674759A - Baby standing state identification method and system - Google Patents
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Abstract
The invention discloses a method for identifying the standing state of an infant, which is characterized by comprising the following steps of: selecting and marking the key points of the limbs of the infant: marking the state that the baby lies on the back naturally and the lower limbs are straightened as an initialization state, and defining initialization data; defining the distance from each limb key point of the baby to the ground; when each limb contacts the ground, defining a distance threshold value between a limb key point of the limb contacting the ground and the ground; and analyzing the video data, and judging the action state of the baby according to the distance between each limb key point of the baby and the ground. An infant standing state recognition system comprising: the video monitoring module: the infant monitoring system is used for acquiring activity video data of an infant in real time, storing the activity video data in the memory and transmitting the activity video data to the data processing module; a memory: the video monitoring module is used for storing video data of the video monitoring module; a data processing module: for executing the program, the respective steps of the baby standing state identification method in embodiment 1 are realized.
Description
Technical Field
The invention relates to a motion state identification method, in particular to a method and a system for identifying a standing state of an infant.
Background
In the process of growth and development of the infant, standing is a marked stage, marks that the balance ability and muscle development of the infant enter a new stage, and is an important node for carrying on the walking of the infant. Therefore, the real-time recognition of the standing posture of the baby based on the video plays a crucial role in the growth and development of the baby.
With the importance of new parents on the growth and development process of infants, the requirement on software or equipment for monitoring the actions of the infants in real time is increased, the existing method for identifying the standing state of the human body is generally suitable for adults with more clear action judgment nodes, the supporting equipment is complex, and the problem of inaccurate identification exists for the infants.
Disclosure of Invention
The invention provides a baby standing state identification method, aiming at solving the problem that the existing standing state identification technology cannot accurately identify the baby action characteristics.
The invention is realized by the following technical scheme:
a method for identifying the standing state of an infant is characterized by comprising the following steps:
s1: selecting and marking the key points of the limbs of the infant: crown a, left shoulder S1, right shoulder S2, left hand H1, right hand H2, hip P, left knee K1, right knee K2, left foot F1, and right foot F2;
s2: marking the state that the baby lies on the back naturally and the lower limbs are straightened as an initialization state, and defining initialization data;
s3: defining the distance from each limb key point of the baby to the ground; when each limb contacts the ground, defining a distance threshold value between a limb key point of the limb contacting the ground and the ground;
s4: analyzing the video data, judging the motion state of the baby according to the distance between each limb key point of the baby and the ground, and judging the standing state of the baby at present by combining the previous continuous motion state of the baby.
The initialization data of step S2 specifically defines: the distance from the midpoint of the two-point connecting line of the left foot F1 and the right foot F2 to the vertex A is defined as a body length threshold a ', the distance from the left knee K1 to the left foot F1 and the distance from the right knee K2 to the right foot F2 are respectively defined as a left lower leg length threshold K1 ', a right lower leg length threshold K2 ', the distance from the left hand H1 to the left shoulder S1 and the distance from the right hand H2 to the right shoulder S2 are respectively defined as a left arm length threshold H1 ' and a right arm length threshold H2 ';
the distance from each limb key point to the ground in step S3 is specifically defined as follows: the distance from the vertex A to the ground is XA, the distances from the left shoulder S1 and the right shoulder S2 to the ground are XS1 and XS2 respectively, the distances from the left hand H1 and the right hand H2 to the ground are XH1 and XH2 respectively, the distance from the hip P to the ground is XP, the distances from the left knee K1 and the right knee K2 to the ground are XK1 and XK2 respectively, and the distances from the left foot F1 and the right foot F2 to the ground are XF1 and XF2 respectively;
distance of step S3The off-threshold is specifically defined as: when the buttocks contact the ground, the distance threshold value from the buttocks P to the ground is X1P, when the two feet contact the ground, the distance threshold between the left foot F1 and the right foot F2 to the ground is X1F1、X1F2。
When XA<a' and XP is less than or equal to X1P, and XF1 is less than or equal to X1X is not less than F1 or XF21F2, determining that the baby is in a sitting state.
When XA<a', and XK1<k 1' or XK2<k 2' and XF1 is not more than X1X is not less than F1 or XF21F2, and XA is less than or equal to XH1 or XA is less than or equal to XH2, then the infant is judged to be in the climbing state.
After the baby state is sequentially judged to be a sitting state and a climbing state, if XF1 is more than or equal to X in the next frame of picture1X is not less than F1 or XF21F2, and XK1 is not less than k1 ', and XK2 is not less than k 2', and XF1<XK1<XP<S1<XA, and XF2<XK2<XP<S2<XA, the infant is judged to be in a standing state.
When XF1 is less than or equal to X1X is more than or equal to F1 and XF21F2 is not satisfied at the same time, the baby is judged to be in the standing state of the leaning object; when XF1 is less than or equal to X1F1 and XF2 is not more than X1F2, the infant is determined to be in the free-standing state.
After the baby is judged to be in the standing state, if XS1 is not less than XA or XS2 is not less than XA in the next frame picture, the baby is judged to have dangerous action.
An infant standing state recognition system comprising:
the video monitoring module: the infant monitoring system is used for acquiring activity video data of an infant in real time, storing the activity video data in the memory and transmitting the activity video data to the data processing module;
a memory: the video monitoring module is used for storing video data of the video monitoring module;
a data processing module: used for executing the program to realize the steps of the baby standing state identification method.
The video monitoring module is arranged at the indoor position capable of monitoring the movement range of the infant, the data processing module and the memory are arranged at the terminal, and the real-time video data transmitted by the video monitoring module are received wirelessly.
When the data processing module judges that the baby is in a sitting state, a climbing state and a standing state in sequence, extracting and marking short videos corresponding to the continuous pictures; when the judgment data processing module judges that the baby has dangerous actions, an alarm prompt is sent.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the method, the limb key points of the baby are marked, the threshold values of the limb key points are defined, the action state of the baby is judged according to the relation between the distance between the limb key points and the ground and the threshold values of the limb key points, and the accuracy of judging the standing learning state of the baby is improved. The standing growth learning state of the baby is recorded through a specific system, and the dangerous action of the baby is warned. Parents can check the growth and standing learning conditions of the infants at any time through the terminal and receive abnormal warning signals in time.
Drawings
A further understanding of the embodiments of the present invention may be obtained from the following claims of the invention and the following description of the preferred embodiments when taken in conjunction with the accompanying drawings. Individual features of the different embodiments shown in the figures may be combined in any desired manner in this case without going beyond the scope of the invention. In the drawings:
fig. 1 is a schematic diagram of a critical point of a limb of an infant of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1, in this embodiment, a method for identifying a standing state of an infant includes the following steps:
s1: selecting and marking the key points of the limbs of the infant: crown a, left shoulder S1, right shoulder S2, left hand H1, right hand H2, hip P, left knee K1, right knee K2, left foot F1, and right foot F2;
s2: marking the state that the baby lies on the back naturally and the lower limbs are straightened as an initialization state, and defining initialization data;
s3: defining the distance from each limb key point of the baby to the ground; when each limb contacts the ground, defining a distance threshold value between a limb key point of the limb contacting the ground and the ground;
s4: analyzing the video data, judging the motion state of the baby according to the distance between each limb key point of the baby and the ground, and judging the standing state of the baby at present by combining the previous continuous motion state of the baby.
The initialization data of step S2 specifically defines: the distance from the midpoint of the two-point connecting line of the left foot F1 and the right foot F2 to the vertex A is defined as a body length threshold a ', the distance from the left knee K1 to the left foot F1 and the distance from the right knee K2 to the right foot F2 are respectively defined as a left lower leg length threshold K1 ', a right lower leg length threshold K2 ', the distance from the left hand H1 to the left shoulder S1 and the distance from the right hand H2 to the right shoulder S2 are respectively defined as a left arm length threshold H1 ' and a right arm length threshold H2 ';
the distance from each limb key point to the ground in step S3 is specifically defined as follows: the distance from the vertex A to the ground is XA, the distances from the left shoulder S1 and the right shoulder S2 to the ground are XS1 and XS2 respectively, the distances from the left hand H1 and the right hand H2 to the ground are XH1 and XH2 respectively, the distance from the hip P to the ground is XP, the distances from the left knee K1 and the right knee K2 to the ground are XK1 and XK2 respectively, and the distances from the left foot F1 and the right foot F2 to the ground are XF1 and XF2 respectively;
the distance threshold in step S3 is specifically defined as: when the buttocks contact the ground, the distance threshold value from the buttocks P to the ground is X1P, when the two feet contact the ground, the distance threshold between the left foot F1 and the right foot F2 to the ground is X1F1、X1F2。
When XA<a' and XP is less than or equal to X1P, and XF1 is less than or equal to X1X is not less than F1 or XF21F2, determining that the baby is in a sitting state.
When XA<a', and XK1<k 1' or XK2<k 2' and XF1 is not more than X1X is not less than F1 or XF21F2, and XA is less than or equal to XH1 or XA is less than or equal to XH2, then the infant is judged to be in the climbing state.
After the baby state is sequentially judged to be a sitting state and a climbing state, if XF1 is more than or equal to X in the next frame of picture1X is not less than F1 or XF21F2, and XK1 is not less than k1 ', and XK2 is not less than k 2', and XF1<XK1<XP<S1<XA, and XF2<XK2<XP<S2<XA, the infant is judged to be in a standing state.
When XF1 is less than or equal to X1X is more than or equal to F1 and XF21F2 is not satisfied at the same time, the baby is judged to be in the standing state of the leaning object; when XF1 is less than or equal to X1F1 and XF2 is not more than X1F2, the infant is determined to be in the free-standing state.
After the baby is judged to be in the standing state, if XS1 is not less than XA or XS2 is not less than XA in the next frame picture, the baby is judged to have dangerous action.
In order to further achieve the object of the present invention, the present invention also proposes a second embodiment.
Example 2:
on the basis of embodiment 1, an infant standing state recognition system includes:
the video monitoring module: the infant monitoring system is used for acquiring activity video data of an infant in real time, storing the activity video data in the memory and transmitting the activity video data to the data processing module;
a memory: the video monitoring module is used for storing video data of the video monitoring module;
a data processing module: for executing the program, the respective steps of the baby standing state identification method in embodiment 1 are realized.
The video monitoring module is arranged at the indoor position capable of monitoring the movement range of the infant, the data processing module and the memory are arranged at the terminal, and the real-time video data transmitted by the video monitoring module are received wirelessly. Parents can check the growth activity condition of the baby at any time through the terminal and receive an abnormal alarm signal in time. Parents can refer to the general law of the development of the standing actions of the infants, effectively avoid the injury to the infants caused by the early standing action training, and meanwhile, if the infants do not have the development characteristics at the development nodes, the parents can consult doctors in time.
When the data processing module judges that the baby is in a sitting state, a climbing state and a standing state in sequence, extracting and marking short videos corresponding to the continuous pictures; when the judgment data processing module judges that the baby has dangerous actions, parents can be reminded to correct the actions, and a scientific domestic method is provided; if the baby dangerous action continues, a warning is sent to the parent terminal.
In combination with the above embodiments, it can be seen that the method marks the limb key points of the baby, defines the threshold values of the limb key points, and determines the action state of the baby according to the relationship between the distance between the limb key points and the ground and the threshold values of the limb key points, thereby improving the accuracy of determining the standing learning state of the baby. The standing growth learning state of the baby is recorded through a specific system, and the dangerous action of the baby is warned. Parents can check the growth and standing learning conditions of the infants at any time through the terminal and receive abnormal warning signals in time.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that are changed from the content of the present specification and the drawings, or are directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A method for identifying the standing state of an infant is characterized by comprising the following steps:
s1: selecting and marking the key points of the limbs of the infant: crown a, left shoulder S1, right shoulder S2, left hand H1, right hand H2, hip P, left knee K1, right knee K2, left foot F1, and right foot F2;
s2: marking the state that the baby lies on the back naturally and the lower limbs are straightened as an initialization state, and defining initialization data;
s3: defining the distance from each limb key point of the baby to the ground; when each limb contacts the ground, defining a distance threshold value between a limb key point of the limb contacting the ground and the ground;
s4: analyzing the video data, judging the motion state of the baby according to the distance between each limb key point of the baby and the ground, and judging the standing state of the baby at present by combining the previous continuous motion state of the baby.
2. The method for recognizing the standing state of an infant as claimed in claim 1,
the initialization data of step S2 specifically defines: the distance from the midpoint of the two-point connecting line of the left foot F1 and the right foot F2 to the vertex A is defined as a body length threshold a ', the distance from the left knee K1 to the left foot F1 and the distance from the right knee K2 to the right foot F2 are respectively defined as a left lower leg length threshold K1 ', a right lower leg length threshold K2 ', the distance from the left hand H1 to the left shoulder S1 and the distance from the right hand H2 to the right shoulder S2 are respectively defined as a left arm length threshold H1 ' and a right arm length threshold H2 ';
the distance from each limb key point to the ground in step S3 is specifically defined as follows: the distance from the vertex A to the ground is XA, the distances from the left shoulder S1 and the right shoulder S2 to the ground are XS1 and XS2 respectively, the distances from the left hand H1 and the right hand H2 to the ground are XH1 and XH2 respectively, the distance from the hip P to the ground is XP, the distances from the left knee K1 and the right knee K2 to the ground are XK1 and XK2 respectively, and the distances from the left foot F1 and the right foot F2 to the ground are XF1 and XF2 respectively;
the distance threshold in step S3 is specifically defined as: when the buttocks contact the ground, the distance threshold value from the buttocks P to the ground is X1P, when the two feet contact the ground, the distance threshold between the left foot F1 and the right foot F2 to the ground is X1F1、X1F2。
3. The method as claimed in claim 2, wherein the infant is identified when XA is in a standing state<a' and XP is less than or equal to X1P, and XF1 is less than or equal to X1X is not less than F1 or XF21F2, determining that the baby is in a sitting state.
4. A method as claimed in claim 3, wherein the infant is identified when in XA<a’，And XK1<k 1' or XK2<k 2' and XF1 is not more than X1X is not less than F1 or XF21F2, and XA is less than or equal to XH1 or XA is less than or equal to XH2, then the infant is judged to be in the climbing state.
5. The method as claimed in claim 4, wherein after determining the status of the infant is sitting status and climbing status in sequence, if XF1 is smaller than or equal to X in the next frame1X is not less than F1 or XF21F2, and XK1 is not less than k1 ', and XK2 is not less than k 2', and XF1<XK1<XP<S1<XA, and XF2<XK2<XP<S2<XA, the infant is judged to be in a standing state.
6. The method as claimed in claim 5, wherein XF1 is less than or equal to X1X is more than or equal to F1 and XF21F2 is not satisfied at the same time, the baby is judged to be in the standing state of the leaning object; when XF1 is less than or equal to X1F1 and XF2 is not more than X1F2, the infant is determined to be in the free-standing state.
7. The method as claimed in claim 5, wherein after the baby is determined to be in the standing state, if XS1 ≦ XA or XS2 ≦ XA in the next frame, it is determined that the baby is in the dangerous state.
8. An infant standing state recognition system, comprising:
the video monitoring module: the infant monitoring system is used for acquiring activity video data of an infant in real time, storing the activity video data in the memory and transmitting the activity video data to the data processing module;
a memory: the video monitoring module is used for storing video data of the video monitoring module;
a data processing module: for executing the program for carrying out the steps of the method for identifying the standing state of an infant as claimed in any one of claims 1 to 7.
9. The system for identifying the standing state of an infant as claimed in claim 8, wherein the video monitoring module is disposed at the position of the indoor monitoring range of the infant, and the data processing module and the memory are disposed at the terminal for wirelessly receiving the real-time video data transmitted from the video monitoring module.
10. The system for identifying the standing state of the infant according to claim 8, wherein when the data processing module determines that the infant is in the sitting state, the climbing state and the standing state in sequence, the short videos corresponding to the continuous frames are extracted and marked; when the judgment data processing module judges that the baby has dangerous actions, an alarm prompt is sent.
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