CN105997035A - Non-contact type heart rate measurement method and system - Google Patents
Non-contact type heart rate measurement method and system Download PDFInfo
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- CN105997035A CN105997035A CN201610293180.6A CN201610293180A CN105997035A CN 105997035 A CN105997035 A CN 105997035A CN 201610293180 A CN201610293180 A CN 201610293180A CN 105997035 A CN105997035 A CN 105997035A
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- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
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Abstract
The invention relates to the field of heart rate measurement, and particularly relates to a non-contact type heart rate measurement method and system. The method includes: acquiring video images of human body skin tissue zones of a man to be measured through a preset non-contact manner, and extracting the skin tissue zones according to the video images; performing image processing on the skin tissue zones meeting a preset condition of all the skin tissue zones, and generating image data; and calculating the heart rate according to the image data. According to the method, the video images of the human body skin tissue zones of the man to be measured are acquired through the preset non-contact manner, and real-time measurement of the heart rate is performed according to the processed image data; the non-contact type heart rate measurement method is simple, is high in measurement accuracy, and can improve the user experience.
Description
[technical field]
The present invention relates to heart rate measurement technical field, particularly relate to a kind of contactless method for measuring heart rate
And system.
[background technology]
In recent years, medical treatment & health based on the Internet receives much concern, and development is burning hot.Occur on the market very
Many portable sets, for measuring the physical signs that human body is common, such as heart rate, blood pressure, blood oxygen saturation
Degree etc., wherein, heart rate is as the physiological parameter on the most common basis the most of human body, and the measurement of heart rate becomes
For most basic function.Heart rate is generally measured together with blood pressure traditionally, uses pressure application,
But because needing air pump and the reason such as the big portability of volume is bad so that in daily use, infrared method is more subject to
Favor.Hardware integration method in existing infrared method heart rate measurement mode, by by infrared light emission and
Receive device and be integrated into the form of finger tip folder, export the heart rate value surveyed with LED display；This scheme
Being disadvantageous in that, it is the longest that it measures life of equipment, and hardware is the most aging, including infrared
Penetrating and receive device, display screen and battery etc., once certain hardware goes wrong, and will affect whole setting
Standby experience.It addition, the one that heart rate measurement based on mobile phone camera is infrared method derives,
In this scenario, can be by finger flicking at mobile phone camera, by mobile phone flashlight as light source
Launching, photographic head, as transmission optical acquisition device, calculates heart rate afterwards and shows at mobile phone A PP end；
This scheme is disadvantageous in that, still has the space of lifting, it is necessary to connect with finger in simplicity
Contact photographic head, posture is required relatively stricter, affect Consumer's Experience.
[summary of the invention]
The present invention provides a kind of contactless method for measuring heart rate and system, obtains quilt with cordless
The video image in the human skin tissue region of tester also realizes in real time according to the view data after processing
The measurement of heart rate, its metering system is simple, and accuracy of measurement is high, improves Consumer's Experience.
First aspect according to embodiments of the present invention, it is provided that a kind of contactless method for measuring heart rate, bag
Include step:
S100, by regarding of the human skin tissue region of default cordless acquisition detected person
Frequently image, extracts skin tissue area according to described video image；
S200, is carried out meeting pre-conditioned skin tissue area in all described skin tissue area
Image procossing also generates view data；
S300, calculates heart rate value according to described view data.
Further, described step S100 includes:
By the photographic head non-contact illumination of electronic equipment the video image that gathers detected person, will
Described video image stores to the first memory block；
According to default skin color scope obtain in the video image in described first memory block tested
The skin tissue area of survey person, and be after described skin tissue area is named according to default naming rule,
By described skin tissue area image zooming-out to the second memory block.
Further, described step S200 includes:
Detect the described region of skin tissue area image that whether there is extraction in described second memory block；
When there is the described region of skin tissue area image of extraction in described second memory block, obtain area
Maximum described region of skin tissue area image, and according to preset rules by described region of skin tissue area image
After carrying out image transcoding, the quadratic sum that the described image after transcoding carries out pixel calculates, and will generate
View data store to relief area；
When there is not the described region of skin tissue area image of extraction in described second memory block, for described
Video image arranges error flag, and is back to step S100 continuation collection video image.
Further, described step S300 includes:
Detecting the accumulation data length in described relief area, whether to reach very first time of rate calculation long
Degree；
When accumulation data length in described relief area reaches the very first time length of rate calculation, will
The data window of described very first time length is set as calculation window, and calculates heart rate value；
By described calculation window forward slip the second time span, and calculate heart rate value；
Wherein, described calculating heart rate value includes: by the data of described very first time length according to time sequence
Row are built into waveform, obtain in described calculation window the time interval value between all adjacent two crests it
With, and remove 60 after described and average, obtain heart rate value.
Further, described calculating heart rate value also includes:
After the data of described very first time length are built into waveform according to time series, by described
Waveform carries out data smoothing filtration, removes spurious peaks；
And/or
Baseline drift is removed by wave filter；
And/or
According to the minimum interval between default adjacent peaks, remove unreasonable crest.
Second aspect according to embodiments of the present invention, also provides for a kind of contactless heart rate measurement system,
Including:
Image collection module, for obtaining the human body skin of detected person by default cordless
The video image of tissue regions, extracts skin tissue area according to described video image；
Image processing module, is connected to described image collection module, for all described skin histologies
Region meets pre-conditioned skin tissue area carry out image procossing and generate view data；
Data processing module, is connected to described image processing module, based on according to described view data
Calculate heart rate value.
Further, described image collection module includes:
Image unit, for irradiating and gather the video image of detected person, deposits described video image
Storage is to the first memory block；
Extraction unit, is connected to described image unit, for obtaining according to the skin color scope preset
The skin tissue area of the detected person in video image in described first memory block, and according to presetting
After naming rule is the name of described skin tissue area, by described skin tissue area image zooming-out to the
Two memory blocks.
Further, described image processing module includes:
First detector unit, is connected to described extraction unit, is used for detecting in described second memory block and is
The no described skin tissue area that there is extraction；
First processing unit, is connected to described first detector unit, in described second memory block
When there is the described skin tissue area extracted, obtain the described skin tissue area that area is maximum, and
After described skin tissue area being carried out image transcoding according to preset rules, to the described image after transcoding
The quadratic sum carrying out pixel calculates, and stores the view data of generation to relief area；
Second processing unit, is connected to described first detector unit, in described second memory block
When there is not the described skin tissue area of extraction, error flag is set for described video image, and returns
Return and continue to gather video image.
Further, described data processing module includes:
Second detector unit, is connected to the first processing unit and described second processing unit, is used for detecting
Whether the accumulation data length in described relief area reaches the very first time length of rate calculation；
3rd processing unit, is connected to described second detector unit, for tiring out in described relief area
When volume data length reaches the very first time length of rate calculation, by the data of described very first time length
Window is set as calculation window, and calculates heart rate value；
Fourth processing unit, is connected to described second detector unit, for by described calculation window forward
Slide the second time span, and calculate heart rate value；Wherein, described calculating heart rate value includes: by described
The data of very first time length are built into waveform according to time series, obtain in described calculation window all
Time interval value sum between adjacent two crests, and remove 60 after described and average, obtain heart rate value.
Further, described data processing module also includes being connected to described 3rd processing unit and the 4th
The filter unit of processing unit, described filter unit is at the data root by described very first time length
After being built into waveform according to time series, described waveform is carried out data smoothing filtration, remove spurious peaks；
Described filter unit is additionally operable to remove baseline drift by wave filter；Described filter unit is additionally operable to basis
Minimum interval between the adjacent peaks preset, removes unreasonable crest.
The contactless method for measuring heart rate of the present invention includes: obtain tested by default cordless
The video image in the human skin tissue region of survey person, extracts region of skin tissue according to described video image
Territory；Carry out at image all described skin tissue area meet pre-conditioned skin tissue area
Manage and generate view data；Heart rate value is calculated according to described view data.Present invention cordless
Obtain detected person human skin tissue region video image and according to process after picture number factually
The measurement of heart rate during reality, its metering system is simple, and accuracy of measurement is high, improves Consumer's Experience.
Other features and advantages of the present invention will illustrate in the following description, and, partly from
Description becomes apparent, or understands by implementing the present invention.The purpose of the present invention and its
His advantage can be by knot specifically noted in the description write, claims and accompanying drawing
Structure realizes and obtains.
Below by drawings and Examples, technical scheme is described in further detail.
[accompanying drawing explanation]
Fig. 1 is that the present invention is according to the contactless method for measuring heart rate of one shown in an exemplary embodiment
Flow chart；
Fig. 2 is that the present invention is according to the contactless method for measuring heart rate of one shown in an exemplary embodiment
The flow chart of step S100；
Fig. 3 is that the present invention is according to the contactless method for measuring heart rate of one shown in an exemplary embodiment
The flow chart of step S200；
Fig. 4 is that the present invention is according to the contactless method for measuring heart rate of one shown in an exemplary embodiment
The flow chart of step S300；
Fig. 5 is that the present invention is according to the one contactless heart rate measurement system shown in an exemplary embodiment
Block diagram；
Fig. 6 is that the present invention is according to the one contactless heart rate measurement system shown in an exemplary embodiment
The block diagram of image collection module 100；
Fig. 7 is that the present invention is according to the one contactless heart rate measurement system shown in an exemplary embodiment
The block diagram of image processing module 200；
Fig. 8 is that the present invention is according to the one contactless heart rate measurement system shown in an exemplary embodiment
The block diagram of data processing module 300.
[detailed description of the invention]
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, the present invention is further elaborated.Should be appreciated that described herein specifically
Embodiment only in order to explain the present invention, is not intended to limit the present invention.
Embodiments provide a kind of contactless method for measuring heart rate and system, use noncontact side
Formula obtains the video image in the human skin tissue region of detected person and according to the view data after processing
Realizing the measurement of real-time heart rate, its metering system is simple, and accuracy of measurement is high, improves Consumer's Experience.
As it is shown in figure 1, the method comprising the steps of S100-S300:
In the step s 100, the human skin tissue of detected person is obtained by default cordless
The video image in region, extracts skin tissue area according to described video image.Wherein, the quilt of acquisition
The human skin tissue region of tester, including other positions of face or human body.Wherein, in advance
If cordless can set according to user's request, such as, can be by the shooting of electronic equipment
The non-contact illumination of head obtains the video image in the human skin tissue region of detected person.
In step s 200, pre-conditioned skin histology is met in all described skin tissue area
Region carries out image procossing and generates view data.Wherein, described pre-conditioned root is included but not limited to
According to the color gamut of different skin, carry out logical judgment, thus arrange pre-conditioned.
In step S300, calculate heart rate value according to described view data.
In certain embodiments, as in figure 2 it is shown, described step S100 includes:
Step S110, by the photographic head non-contact illumination of electronic equipment and gather regarding of detected person
Frequently image, stores described video image to the first memory block；Wherein, described first memory block is permissible
For internal storage, it is possible to for other external memory storages.Intelligible, in described first memory block
Picture can be the picture gathered, it is also possible to be that user stores as required to described first memory block
Picture.
Step S120, obtains the video figure in described first memory block according to default skin color scope
The skin tissue area of the detected person in Xiang, and be described region of skin tissue according to default naming rule
After the name of territory, by described skin tissue area image zooming-out to the second memory block.Wherein, described second
Memory block can be internal storage, it is possible to for other external memory storages.Intelligible, described first
Memory block and the second memory block can be the memory block on same memorizer, it is possible to on different memory
Memory block.
In certain embodiments, as it is shown on figure 3, described step S200 includes:
Step S210, detects the described skin tissue area that whether there is extraction in described second memory block
Image.That is, the most whether detection extracts described region of skin tissue area image.
Step S220, when described second memory block exists the described region of skin tissue area image of extraction,
Obtain the described region of skin tissue area image that area is maximum, and according to preset rules by described skin histology
After area image carries out image transcoding, the quadratic sum that the described image after transcoding carries out pixel calculates,
And the view data of generation is stored to relief area；In certain embodiments, in step S220, figure
As transcoding and computational methods, include but not limited to the skin to the different-format that distinct electronic apparatuses extracts
It is HSV form that tissue regions image carries out format code transferring, and extracts the H passage in HSV format picture,
Pixels all in H passage are carried out quadratic sum calculating, obtains the number that this region of skin tissue area image is final
Value, by this numerical generation view data, and stores the view data of generation to relief area.
, in described second memory block, there is not the described region of skin tissue area image of extraction in step S230
Time, error flag is set for described video image, and is back to step S100 continuation collection video image.
In certain embodiments, as shown in Figure 4, described step S300 includes:
Step S310, detects whether the accumulation data length in described relief area reaches the of rate calculation
One time span；Wherein, described very first time length can be set according to practical situation, in this reality
Executing in example, described very first time length is preferably 3 to 5 seconds.
Step S320, the accumulation data length in described relief area reaches the very first time of rate calculation
During length, the data window of described very first time length is set as calculation window, and calculates heart rate value.
Step S330, by described calculation window forward slip the second time span, and calculates heart rate value；
Wherein, described second time span is set also dependent on practical situation, in the present embodiment, and institute
State the second time span and be preferably 1 second.
Above step S320 is with step S330, and described calculating heart rate value includes: during by described first
Between the data of length be built into waveform according to time series, obtain in described calculation window all adjacent two
Time interval value sum between crest, and remove 60 after described and average, obtain heart rate value.
In certain embodiments, the described further comprising the steps of S301 of calculating heart rate value, step S302,
One or more steps in step S303.
Step S301, by the data of described very first time length according to time series be built into waveform it
After, described waveform is carried out data smoothing filtration, removes spurious peaks；Wherein, it is preferred to use Kalman
Described waveform is carried out data smoothing filtration by wave filter, removes spurious peaks.
Step S302, removes baseline drift by wave filter；Wherein, preferably gone by low pass filter
Except baseline drift phenomenon.
Step S303, according to the minimum interval between default adjacent peaks, removes unreasonable ripple
Peak.
The said method that the embodiment of the present invention provides, by camera of electronic equipment noncontacts such as mobile phones
The video image of formula shooting extracts region of skin tissue area image, and the figure extracting skin tissue area
As carrying out the measurement of real-time heart rate after process according to the view data after processing, optimize measurement greatly
The flow process of heart rate and step, its metering system is simple, and accuracy of measurement is high, improves Consumer's Experience.
The contactless method for measuring heart rate that the corresponding embodiment of the present invention provides, the present invention also provides for one
Contactless heart rate measurement system, as it is shown in figure 5, this system comprises the steps that
Image collection module 100, for obtaining the human body skin of detected person by default cordless
The video image in skin tissue region, extracts skin tissue area according to described video image；Wherein, in advance
If cordless can set according to user's request, such as, can be by the shooting of electronic equipment
The non-contact illumination of head obtains the video image in the human skin tissue region of detected person.
It is connected to the image processing module 200 of described image collection module 100, for all described skins
Skin tissue region meets pre-conditioned skin tissue area carry out image procossing and generate picture number
According to；
It is connected to the data processing module 300 of described image processing module 200, for according to described image
Data calculate heart rate value.
In certain embodiments, as shown in Figure 6, described image collection module 100 includes:
Image unit 110, for irradiating and gather the video image of detected person, by described video image
Store to the first memory block；
It is connected to the extraction unit 120 of described image unit 110, for according to the skin color model preset
Enclose the skin tissue area of detected person in the video image obtained in described first memory block, and root
After being the name of described skin tissue area according to default naming rule, described region of skin tissue area image is carried
Take to the second memory block.
It should be understood that described first memory block and/or the second memory block can be internal storage, also
Can be other external memory storages；Described first memory block and the second memory block can be on same memorizer
Memory block, it is possible to for the memory block on different memory.
In certain embodiments, as it is shown in fig. 7, described image processing module 200 includes:
First detector unit 210, is connected to described extraction unit 120, is used for detecting described second storage
Whether district exists the described skin tissue area of extraction；
It is connected to the first processing unit 220 of described first detector unit 210, for depositing described second
When storage area exists the described skin tissue area of extraction, obtain the described region of skin tissue that area is maximum
Territory, and after described skin tissue area being carried out image transcoding according to preset rules, to the institute after transcoding
State image and carry out the quadratic sum calculating of pixel, and the view data of generation is stored to relief area；
It is connected to the second processing unit 230 of described first detector unit 210, for depositing described second
When storage area does not exist the described skin tissue area of extraction, error flag is set for described video image,
And return continuation collection video image.
In certain embodiments, as shown in Figure 8, described data processing module 300 includes:
Second detector unit 310, is connected to the first processing unit 220 and described second processing unit 230,
For detecting the accumulation data length in described relief area, whether to reach very first time of rate calculation long
Degree；
It is connected to the 3rd processing unit 320 of described second detector unit 310, in described relief area
In accumulation data length when reaching the very first time length of rate calculation, by described very first time length
Data window be set as calculation window, and calculate heart rate value；
It is connected to described second detector unit 310 fourth processing unit 330, for by described calculation window
Forward slip the second time span, and calculate heart rate value；Wherein, described calculating heart rate value includes: will
The data of described very first time length are built into waveform according to time series, obtain in described calculation window
Time interval value sum between all adjacent two crests, and remove 60 after described and average, obtain the heart
Rate value.
It should be understood that in an embodiment of the present invention, described first processing unit 220 and/or second
Processing unit 230 and/or the 3rd processing unit 320 and/or fourth processing unit 330, can be same
Processor, it is possible to for different processors.
In certain embodiments, described data processing module 300 also includes being connected to described 3rd process
The filter unit 340 of unit 320 and fourth processing unit 330, described filter unit 340 is for inciting somebody to action
After the data of described very first time length are built into waveform according to time series, described waveform is carried out
Data smoothing filters, and removes spurious peaks；Described filter unit is additionally operable to remove baseline by wave filter and floats
Move；Described filter unit is additionally operable to the minimum interval between the adjacent peaks that basis is preset, and removes
Unreasonable crest.
It should be understood that those skilled in the art can use any filtering method to carry out Wave data
Smooth filtration, in the present embodiment, it is preferred to use described waveform is carried out data smoothing by Kalman filter
Filter, remove spurious peaks.Those skilled in the art can also use any means removal to be likely to occur
Baseline drift phenomenon, in the present embodiment, preferably removes baseline drift phenomenon by low pass filter.
System described in the present embodiment is by the video in the contactless shooting of the camera of electronic equipment such as mobile phone
Image extracts basis after region of skin tissue area image, and the image procossing extracting skin tissue area
View data after process carries out the measurement of real-time heart rate, optimize greatly measure heart rate flow process and
Step, its metering system is simple, and accuracy of measurement is high, improves Consumer's Experience.
Those skilled in the art it should be appreciated that embodiments of the invention can be provided as method, system,
Or computer program.Therefore, the present invention can use complete hardware embodiment, complete software to implement
Example or the form of the embodiment in terms of combining software and hardware.And, the present invention can use at one
Or multiple wherein include computer usable program code computer-usable storage medium (include but not
It is limited to disk memory and optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method, equipment (system) and computer program according to embodiments of the present invention
The flow chart of product and/or block diagram describe.It should be understood that stream can be realized by computer program instructions
In each flow process in journey figure and/or block diagram and/or square frame and flow chart and/or block diagram
Flow process and/or the combination of square frame.These computer program instructions can be provided to general purpose computer, specially
With the processor of computer, Embedded Processor or other programmable data processing device to produce one
Machine so that the instruction performed by the processor of computer or other programmable data processing device is produced
Raw for realizing one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple side
The device of the function specified in frame.
These computer program instructions may be alternatively stored in and computer or other programmable datas can be guided to process
In the computer-readable memory that equipment works in a specific way so that be stored in this computer-readable and deposit
Instruction in reservoir produces the manufacture including command device, and this command device realizes flow chart one
The function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded into computer or other programmable data processing device
On so that on computer or other programmable devices, perform sequence of operations step to produce computer
The process realized, thus the instruction performed on computer or other programmable devices provides and is used for realizing
One flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame are specified
The step of function.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all
Any amendment, equivalent and the improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (10)
1. a contactless method for measuring heart rate, it is characterised in that include step:
S100, by regarding of the human skin tissue region of default cordless acquisition detected person
Frequently image, extracts skin tissue area according to described video image；
S200, is carried out meeting pre-conditioned skin tissue area in all described skin tissue area
Image procossing also generates view data；
S300, calculates heart rate value according to described view data.
A kind of contactless method for measuring heart rate the most as claimed in claim 1, it is characterised in that institute
State step S100 to include:
By the photographic head non-contact illumination of electronic equipment the video image that gathers detected person, will
Described video image stores to the first memory block；
According to default skin color scope obtain in the video image in described first memory block tested
The skin tissue area of survey person, and be after described skin tissue area is named according to default naming rule,
By described skin tissue area image zooming-out to the second memory block.
A kind of contactless method for measuring heart rate the most as claimed in claim 2, it is characterised in that institute
State step S200 to include:
Detect the described region of skin tissue area image that whether there is extraction in described second memory block；
When there is the described region of skin tissue area image of extraction in described second memory block, obtain area
Maximum described region of skin tissue area image, and according to preset rules by described region of skin tissue area image
After carrying out image transcoding, the quadratic sum that the described image after transcoding carries out pixel calculates, and will generate
View data store to relief area；
When there is not the described region of skin tissue area image of extraction in described second memory block, for described
Video image arranges error flag, and is back to step S100 continuation collection video image.
A kind of contactless method for measuring heart rate the most as claimed in claim 3, it is characterised in that institute
State step S300 to include:
Detecting the accumulation data length in described relief area, whether to reach very first time of rate calculation long
Degree；
When accumulation data length in described relief area reaches the very first time length of rate calculation, will
The data window of described very first time length is set as calculation window, and calculates heart rate value；
By described calculation window forward slip the second time span, and calculate heart rate value；
Wherein, described calculating heart rate value includes: by the data of described very first time length according to time sequence
Row are built into waveform, obtain in described calculation window the time interval value between all adjacent two crests it
With, and remove 60 after described and average, obtain heart rate value.
A kind of contactless method for measuring heart rate the most as claimed in claim 4, it is characterised in that institute
State calculating heart rate value also to include:
After the data of described very first time length are built into waveform according to time series, by described
Waveform carries out data smoothing filtration, removes spurious peaks；
And/or
Baseline drift is removed by wave filter；
And/or
According to the minimum interval between default adjacent peaks, remove unreasonable crest.
6. a contactless heart rate measurement system, it is characterised in that including:
Image collection module, for obtaining the human body skin of detected person by default cordless
The video image of tissue regions, extracts skin tissue area according to described video image；
Image processing module, is connected to described image collection module, for all described skin histologies
Region meets pre-conditioned skin tissue area carry out image procossing and generate view data；
Data processing module, is connected to described image processing module, based on according to described view data
Calculate heart rate value.
A kind of contactless heart rate measurement system the most as claimed in claim 6, it is characterised in that institute
State image collection module to include:
Image unit, for irradiating and gather the video image of detected person, deposits described video image
Storage is to the first memory block；
Extraction unit, is connected to described image unit, for obtaining according to the skin color scope preset
The skin tissue area of the detected person in video image in described first memory block, and according to presetting
After naming rule is the name of described skin tissue area, by described skin tissue area image zooming-out to the
Two memory blocks.
A kind of contactless heart rate measurement system the most as claimed in claim 7, it is characterised in that institute
State image processing module to include:
First detector unit, is connected to described extraction unit, is used for detecting in described second memory block and is
The no described skin tissue area that there is extraction；
First processing unit, is connected to described first detector unit, in described second memory block
When there is the described skin tissue area extracted, obtain the described skin tissue area that area is maximum, and
After described skin tissue area being carried out image transcoding according to preset rules, to the described image after transcoding
The quadratic sum carrying out pixel calculates, and stores the view data of generation to relief area；
Second processing unit, is connected to described first detector unit, in described second memory block
When there is not the described skin tissue area of extraction, error flag is set for described video image, and returns
Return and continue to gather video image.
A kind of contactless heart rate measurement system the most as claimed in claim 8, it is characterised in that institute
State data processing module to include:
Second detector unit, is connected to the first processing unit and described second processing unit, is used for detecting
Whether the accumulation data length in described relief area reaches the very first time length of rate calculation；
3rd processing unit, is connected to described second detector unit, for tiring out in described relief area
When volume data length reaches the very first time length of rate calculation, by the data of described very first time length
Window is set as calculation window, and calculates heart rate value；
Fourth processing unit, is connected to described second detector unit, for by described calculation window forward
Slide the second time span, and calculate heart rate value；Wherein, described calculating heart rate value includes: by described
The data of very first time length are built into waveform according to time series, obtain in described calculation window all
Time interval value sum between adjacent two crests, and remove 60 after described and average, obtain heart rate value.
A kind of contactless heart rate measurement system the most as claimed in claim 9, it is characterised in that
Described data processing module also includes being connected to described 3rd processing unit and the filtering of fourth processing unit
Unit, described filter unit is for building the data of described very first time length according to time series
After becoming waveform, described waveform is carried out data smoothing filtration, remove spurious peaks；Described filter unit
It is additionally operable to remove baseline drift by wave filter；Described filter unit is additionally operable to according to the adjacent wave preset
Minimum interval between peak, removes unreasonable crest.
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