TWI806036B - Electronic device and method for monitoring posture - Google Patents
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Abstract
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本發明是有關於一種監視坐姿的電子裝置以及方法。 The invention relates to an electronic device and method for monitoring sitting posture.
目前,有許多工作需仰賴人員長時間待在辦公室操作電腦來進行。長期維持不當的坐姿不但可能降低工作的效率,更可能對人員的健康狀態造成負面的影響。為了使人員維持良好的坐姿,市面上出現了需多坐姿警示系統。舉例來說,傳統的坐姿警示系統可利用設置在桌面、椅子或使用者身上的硬體裝置來偵測使用者的坐姿是否正確。然而,上述的坐姿警示系統需依賴額外的硬體裝置。因此,上述的坐姿警示系統不僅在使用上不便利,還需消耗較高的成本。 At present, there are many jobs that need to rely on personnel to stay in the office for a long time to operate computers. Maintaining an improper sitting posture for a long time may not only reduce work efficiency, but may also have a negative impact on the health of personnel. In order to enable people to maintain a good sitting posture, warning systems that require multiple sitting postures have appeared on the market. For example, a traditional sitting posture warning system can detect whether the user's sitting posture is correct by using a hardware device installed on a desk, a chair, or the user. However, the above-mentioned sitting posture warning system needs to rely on additional hardware devices. Therefore, the above-mentioned sitting posture warning system is not only inconvenient to use, but also needs to consume relatively high cost.
另一種傳統的坐姿警示系統可通過兩顆以上的視訊鏡頭來偵測使用者的坐姿。然而,視訊鏡頭的增加代表坐姿警示系統的成本增加。此外,視訊鏡頭的增加還會造成坐姿警示系統的元件的佈局空間減少。 Another traditional sitting position warning system can detect the user's sitting position through more than two video cameras. However, the increase in video cameras represents an increase in the cost of the posture warning system. In addition, the increase of the video camera also reduces the layout space of the components of the sitting posture warning system.
本發明提供一種監視坐姿的電子裝置以及方法,可利用單一個攝影機來監視使用者的坐姿是否正確。 The invention provides an electronic device and method for monitoring sitting posture, which can use a single camera to monitor whether the user's sitting posture is correct.
本發明的一種監視坐姿的電子裝置,包含處理器、儲存媒體、收發器以及攝影機。攝影機擷取使用者的影像。儲存媒體儲存多個模組以及分別對應於多個群組的多個眼距。處理器耦接儲存媒體、收發器以及攝影機,並且存取和執行多個模組,其中多個模組包含第一機器學習模型以及運算模組。第一機器學習模型根據影像判斷使用者對應於多個群組中的第一群組,其中第一群組對應於多個眼距中的第一眼距。運算模組根據影像取得使用者的影像中眼距,根據第一眼距以及影像中眼距計算使用者與攝影機之間的距離,並且響應於距離超出預設範圍而通過收發器輸出示警訊息。 An electronic device for monitoring sitting posture of the present invention includes a processor, a storage medium, a transceiver and a camera. The camera captures images of the user. The storage medium stores multiple modules and multiple eye distances respectively corresponding to multiple groups. The processor is coupled to the storage medium, the transceiver and the camera, and accesses and executes a plurality of modules, wherein the plurality of modules include a first machine learning model and a computing module. The first machine learning model judges according to the image that the user corresponds to the first group among the plurality of groups, wherein the first group corresponds to the first eye distance among the plurality of eye distances. The calculation module obtains the user's eye distance in the image according to the image, calculates the distance between the user and the camera according to the first eye distance and the image center eye distance, and outputs a warning message through the transceiver in response to the distance exceeding a preset range.
在本發明的一實施例中,上述的多個模組更包含特徵擷取模組。特徵擷取模組根據影像取得使用者的臉部的多個特徵點,其中運算模組根據多個特徵點計算影像中眼距。 In an embodiment of the present invention, the aforementioned modules further include a feature extraction module. The feature extraction module obtains multiple feature points of the user's face according to the image, and the calculation module calculates the eye distance in the image according to the multiple feature points.
在本發明的一實施例中,上述的運算模組根據多個特徵點判斷使用者的頭部動作,根據頭部動作校正第一眼距以產生第一校正眼距,並且根據第一校正眼距以及影像中眼距計算距離。 In an embodiment of the present invention, the above-mentioned calculation module judges the user's head movement according to a plurality of feature points, corrects the first eye distance according to the head movement to generate the first corrected eye distance, and according to the first corrected eye distance distance and the eye distance in the image to calculate the distance.
在本發明的一實施例中,上述的頭部動作包含上下翻轉、左右偏擺以及左右翻轉的至少其中之一,其中運算模組根據頭部動作減少第一眼距以產生第一校正眼距。 In an embodiment of the present invention, the above-mentioned head movement includes at least one of up-down turning, left-right yaw, and left-right turning, wherein the calculation module reduces the first eye distance according to the head movement to generate the first corrected eye distance .
在本發明的一實施例中,上述的第一機器學習模型根據影像判斷使用者的人種和年齡,並且根據人種和年齡判斷使用者對應於第一群組。 In an embodiment of the present invention, the above-mentioned first machine learning model judges the race and age of the user according to the image, and judges that the user corresponds to the first group according to the race and age.
在本發明的一實施例中,上述的多個模組更包含第二機器學習模型。第二機器學習模型根據影像判斷使用者的頭部位置和肩膀位置,其中運算模組根據頭部位置和肩膀位置判斷是否通過收發器輸出第二警示訊息。 In an embodiment of the present invention, the above-mentioned modules further include a second machine learning model. The second machine learning model judges the user's head position and shoulder position according to the image, wherein the calculation module judges whether to output the second warning message through the transceiver according to the head position and shoulder position.
在本發明的一實施例中,上述的運算模組根據頭部位置取得頭部水平軸,根據肩膀位置取得肩線,並且根據頭部水平軸和肩線判斷是否輸出第二警示訊息。 In an embodiment of the present invention, the above-mentioned calculation module obtains the horizontal axis of the head according to the position of the head, obtains the shoulder line according to the position of the shoulder, and determines whether to output the second warning message according to the horizontal axis of the head and the shoulder line.
在本發明的一實施例中,上述的運算模組響應於頭部水平軸並未平行於肩線而判斷輸出第二警示訊息。 In an embodiment of the present invention, the above-mentioned computing module determines to output the second warning message in response to the fact that the horizontal axis of the head is not parallel to the shoulder line.
本發明的一種監視坐姿的方法,包含:預存分別對應於多個群組的多個眼距;通過攝影機擷取使用者的影像;由第一機器學習模型根據影像判斷使用者對應於多個群組中的第一群組,其中第一群組對應於多個眼距中的第一眼距;根據影像取得使用者的影像中眼距;根據第一眼距以及影像中眼距計算使用者與攝影機之間的距離;以及響應於距離超出預設範圍而輸出示警訊息。 A method for monitoring sitting posture of the present invention includes: pre-storing a plurality of eye distances corresponding to a plurality of groups; capturing an image of a user through a camera; judging by a first machine learning model that the user corresponds to a plurality of groups according to the image The first group in the group, wherein the first group corresponds to the first eye distance among the plurality of eye distances; obtain the user's eye distance in the image according to the image; calculate the user according to the first eye distance and the eye distance in the image distance from the camera; and outputting a warning message in response to the distance exceeding a preset range.
基於上述,本發明的電子裝置可通過使用者的眼距、頭部位置和肩膀位置等資訊判斷使用者的坐姿是否正確,並可在使用者的坐姿不正確時輸出警示訊息以提示使用者調整坐姿。 Based on the above, the electronic device of the present invention can judge whether the user's sitting posture is correct based on information such as the user's eye distance, head position, and shoulder position, and can output a warning message to remind the user to adjust when the user's sitting posture is incorrect. sitting posture.
100:電子裝置 100: Electronic device
110:處理器 110: Processor
120:儲存媒體 120: storage media
121:第一機器學習模型 121:First machine learning model
122:第二機器學習模型 122:Second machine learning model
123:特徵擷取模組 123: Feature extraction module
124:運算模組 124: Operation module
130:收發器 130: Transceiver
140:攝影機 140: camera
20:第一眼距 20: first eye distance
30:影像中眼距 30: Eye distance in the image
40:距離 40: Distance
50:頭部位置 50: head position
51:頭部水平軸 51: Head horizontal axis
60:肩膀位置 60: shoulder position
61:肩線 61: shoulder line
F:焦距 F: focal length
S601、S602、S603、S604、S605、S606:步驟 S601, S602, S603, S604, S605, S606: steps
圖1根據本發明的一實施例繪示一種監視坐姿的電子裝置的示意圖。 FIG. 1 is a schematic diagram of an electronic device for monitoring sitting posture according to an embodiment of the present invention.
圖2根據本發明的一實施例繪示使用者的第一眼距的示意圖。 FIG. 2 is a schematic diagram illustrating a user's first eye distance according to an embodiment of the present invention.
圖3根據本發明的一實施例繪示使用者與攝影機之間的距離的示意圖。 FIG. 3 is a schematic diagram illustrating the distance between a user and a camera according to an embodiment of the present invention.
圖4A、4B和4C根據本發明的一實施例繪示頭部動作的示意圖。 4A , 4B and 4C illustrate schematic diagrams of head movements according to an embodiment of the present invention.
圖5根據本發明的一實施例繪示使用者的頭部位置和肩膀位置的示意圖。 FIG. 5 is a schematic diagram illustrating a user's head position and shoulder position according to an embodiment of the present invention.
圖6根據本發明的一實施例繪示一種監視坐姿的方法的流程圖。 FIG. 6 is a flow chart of a method for monitoring sitting posture according to an embodiment of the present invention.
為了使本發明之內容可以被更容易明瞭,以下特舉實施例作為本發明確實能夠據以實施的範例。另外,凡可能之處,在圖式及實施方式中使用相同標號的元件/構件/步驟,係代表相同或類似部件。 In order to make the content of the present invention more comprehensible, the following specific embodiments are taken as examples in which the present invention can actually be implemented. In addition, wherever possible, elements/components/steps using the same reference numerals in the drawings and embodiments represent the same or similar parts.
圖1根據本發明的一實施例繪示一種監視坐姿的電子裝
置100的示意圖。電子裝置100可包含處理器110、儲存媒體120、收發器130以及攝影機140。電子裝置100例如是筆記型電腦、桌上型電腦或平板電腦,本發明不限於此。
Fig. 1 illustrates an electronic device for monitoring sitting posture according to an embodiment of the present invention
Schematic diagram of
處理器110例如是中央處理單元(central processing unit,CPU),或是其他可程式化之一般用途或特殊用途的微控制單元(micro control unit,MCU)、微處理器(microprocessor)、數位信號處理器(digital signal processor,DSP)、可程式化控制器、特殊應用積體電路(application specific integrated circuit,ASIC)、圖形處理器(graphics processing unit,GPU)、影像訊號處理器(image signal processor,ISP)、影像處理單元(image processing unit,IPU)、算數邏輯單元(arithmetic logic unit,ALU)、複雜可程式邏輯裝置(complex programmable logic device,CPLD)、現場可程式化邏輯閘陣列(field programmable gate array,FPGA)或其他類似元件或上述元件的組合。處理器110可耦接至儲存媒體120、收發器130以及攝影機140,並且存取和執行儲存於儲存媒體120中的多個模組和各種應用程式。
The
儲存媒體120例如是任何型態的固定式或可移動式的隨機存取記憶體(random access memory,RAM)、唯讀記憶體(read-only memory,ROM)、快閃記憶體(flash memory)、硬碟(hard disk drive,HDD)、固態硬碟(solid state drive,SSD)或類似元件或上述元件的組合,而用於儲存可由處理器110執行的多個模組或各種應用程式。在本實施例中,儲存媒體120可儲存
包含第一機器學習模型121、第二機器學習模型122、特徵擷取模組123以及運算模組124等多個模組,其功能將於後續說明。
The
收發器130以無線或有線的方式傳送及接收訊號。收發器130還可以執行例如低噪聲放大、阻抗匹配、混頻、向上或向下頻率轉換、濾波、放大以及類似的操作。
The
攝影機140用以擷取使用者的影像。舉例來說,若電子裝置100為筆記型電腦,則攝影機140可以設置在筆記型電腦的顯示器周圍的視訊鏡頭(webcam)。當使用者操作電子裝置100時,使用者將面對攝影機140,並且攝影機140可擷取使用者的影像。
The
眼距(interpupillary distance,IPD)為兩眼的瞳孔中心之間的距離。根據統計,不同的人種或年齡的人員的眼距並不相同。舉例來說,隨著年齡增長,人的眼距會縮短。儲存媒體120可預存分別對應於多個群組的多個眼距,其中所述多個群組分別對應不同的人種及/或年齡。
The interpupillary distance (IPD) is the distance between the pupil centers of the two eyes. According to statistics, people of different races or ages have different eye distances. For example, as we age, the distance between our eyes decreases. The
第一機器學習模型121可用以根據使用者的影像判斷使用者對應於多個群組中的哪一個群組。舉例來說,第一機器學習模型121可根據使用者的影像判斷使用者的人種和年齡,從而根據人種和年齡判斷使用者屬於與所述人種和年齡相對應的第一群組,其中第一群組可對應於儲存在儲存媒體120中的多個眼距中的第一眼距。因此,第一機器學習模型121可判斷使用者的眼距為第一眼距,如圖2所示。圖2根據本發明的一實施例繪示使用
者的第一眼距20的示意圖。
The first machine learning model 121 can be used to determine which group among the multiple groups the user corresponds to according to the image of the user. For example, the first machine learning model 121 can determine the user's race and age according to the user's image, thereby judging that the user belongs to the first group corresponding to the race and age according to the race and age, The first group may correspond to the first eye distance among the plurality of eye distances stored in the
在一實施例中,運算模組122可根據習知的機器學習演算法來訓練和產生第一機器學習模型121,本發明並不加以限制。舉例來說,運算模組122可通過收發器130取得多筆訓練資料,其中多筆訓練中的每一筆訓練資料可包含人員的影像、人員的人種標籤以及人員的年齡標籤。運算模組122可基於監督式學習(supervised learning)演算法以根據多筆訓練資料產生第一機器學習模型121。
In one embodiment, the
另一方面,運算模組124可根據使用者的影像取得使用者的影像中眼距(即:影像中的使用者的眼距)。具體來說,特徵擷取模組123可根據使用者的影像取得使用者的臉部的多個特徵點。運算模組124可根據多個特徵點計算使用者的影像中眼距。
On the other hand, the
在取得使用者的影像中眼距後,運算模組124可根據第一眼距20以及影像中眼距計算使用者與攝影機140之間的距離。圖3根據本發明的一實施例繪示使用者與攝影機140之間的距離40的示意圖,其中F為攝影機140的焦距,30為使用者的影像中眼距,並且20為第一眼距。在焦距F、影像中眼距30以及第一眼距20為已知的情況下,運算模組124可根據如下所示的公式(1)計算出使用者與攝影機140之間的距離40。
After obtaining the eye distance of the user in the image, the
距離40=(第一眼距20/影像中眼距30)*焦距F...(1)
由於使用者的頭部動作可能會影響眼距的量測。因此,在一實施例中,運算模組122可根據使用者的頭部動作調整距離
40的計算方式。具體來說,運算模組122可根據特徵擷取模組123產生的使用者的臉部的多個特徵點來判斷使用者的頭部動作。圖4A、4B和4C根據本發明的一實施例繪示頭部動作的示意圖。頭部動作可包含如圖4A所示的上下翻轉(pitch movement)、如圖4B所示的左右偏擺(roll movement)以及如圖4C所示的左右翻轉(yaw movement)。
The measurement of the eye distance may be affected by the user's head movement. Therefore, in one embodiment, the
運算模組122可根據使用者的頭部動作校正第一眼距20以產生第一校正眼距。以左右翻轉為例,若運算模組122根據使用者的臉部的多個特徵點判斷使用者的頭部左右翻轉,則運算模組122可根據左右翻轉的角度減少第一眼距20以產生第一校正眼距。在產生第一校正眼距後,運算模組122可根據第一校正眼距計算距離40,如公式(2)所示。
The
距離40=(第一校正眼距/影像中眼距30)*焦距F...(2)
在計算完距離40後,運算模組122可響應於距離40超出預設範圍而通過收發器130輸出警示訊息,藉以通過警示訊息提示使用者調整使用者與攝影機140之間的距離40。舉例來說,儲存媒體120可預存距離40的預設下界和預設上界。若距離40小於預設下界,代表使用者太過靠近攝影機140。據此,運算模組122可輸出警示訊息以提示使用者遠離攝影機140以改善坐姿。若距離40大於預設上界,代表使用者太過遠離攝影機140。據此,運算模組122可輸出警示訊息以提示使用者靠近攝影機140以改善坐姿。
After the
除了根據使用者與攝影機140之間的距離之外,電子裝置100還可根據使用者的頭部與肩膀的相對關係來判斷使用者的坐姿是否需要改善。具體來說,第二機器學習模型122可根據使用者的影像判斷使用者的頭部位置50以及肩膀位置60,如圖5所示。圖5根據本發明的一實施例繪示使用者的頭部位置50和肩膀位置60的示意圖。
In addition to the distance between the user and the
在一實施例中,運算模組122可根據習知的機器學習演算法來訓練和產生第二機器學習模型122,本發明並不加以限制。舉例來說,運算模組122可通過收發器130取得多筆訓練資料,其中多筆訓練中的每一筆訓練資料可包含人員的影像、人員的頭部位置標籤以及人員的肩膀位置標籤。運算模組122可基於監督式學習演算法以根據多筆訓練資料產生第二機器學習模型122。
In one embodiment, the
在取得使用者的頭部位置50以及肩膀位置60後,運算模組可根據頭部位置50以及肩膀位置60判斷是否輸出第二警示訊息,其中第二警示訊息用以提示使用者調整頭部位置50或肩膀位置60以改善坐姿。具體來說,運算模組122可根據頭部位置50取得頭部水平軸51,並且根據肩膀位置60取得肩線(shoulder line)61。接著,運算模組122可判斷頭部水平軸51與肩線61是否平行。若頭部水平軸51與肩線61不平行,則運算模組122可通過收發器130輸出第二警視訊息,藉以通過第二警視訊息提示使用者調整頭部位置50或肩膀位置60以使頭部水平軸51與肩線61平行。
After obtaining the user's
圖6根據本發明的一實施例繪示一種監視坐姿的方法的流程圖,其中所述方法可由如圖1所示的電子裝置100實施。在步驟S601中,預存分別對應於多個群組的多個眼距。在步驟S602中,擷取使用者的影像。在步驟S603中,由第一機器學習模型根據影像判斷使用者對應於多個群組中的第一群組,其中第一群組對應於多個眼距中的第一眼距。在步驟S604中,根據影像取得使用者的影像中眼距。在步驟S605中,根據第一眼距以及影像中眼距計算使用者與攝影機之間的距離。在步驟S606中,響應於距離超出預設範圍而輸出示警訊息。
FIG. 6 shows a flowchart of a method for monitoring sitting posture according to an embodiment of the present invention, wherein the method can be implemented by the
綜上所述,本發明的電子裝置可根據使用者的臉部特徵判斷使用者的人種或年齡。在確認使用者的人種或年齡後,電子裝置可根據眼距來判斷使用者與攝影機之間的距離,從而根據距離判斷使用者的坐姿是否正確。另一方面,電子裝置還可以根據使用者的頭部位置和肩膀位置判斷使用者的坐姿是否正確。當使用者的坐姿不正確時,電子裝置可輸出警示訊息以提示使用者改變坐姿。因此,本發明的電子裝置可輔助使用者維持良好的坐姿。 In summary, the electronic device of the present invention can determine the user's race or age according to the user's facial features. After confirming the user's race or age, the electronic device can judge the distance between the user and the camera according to the eye distance, thereby judging whether the user's sitting posture is correct according to the distance. On the other hand, the electronic device can also judge whether the user's sitting posture is correct according to the user's head position and shoulder position. When the user's sitting posture is incorrect, the electronic device can output a warning message to prompt the user to change the sitting posture. Therefore, the electronic device of the present invention can assist the user to maintain a good sitting posture.
S601、S602、S603、S604、S605、S606:步驟 S601, S602, S603, S604, S605, S606: steps
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