TW201638836A - Method and apparatus for capturing image - Google Patents
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Abstract
Description
本發明是有關於一種影像擷取方法及裝置，且特別是有關於一種可自動變焦的影像擷取方法及裝置。 The invention relates to an image capturing method and device, and in particular to an image capturing method and device capable of automatically zooming.
隨著影像擷取技術的進步，數位相機、以及具有影像擷取功能的手機、平板電腦等電子裝置日益普及，各式各樣的新功能被提出以便於使用者拍攝影像。 With the advancement of image capture technology, digital cameras, as well as electronic devices such as mobile phones and tablet computers with image capture functions, have become more and more popular, and various new functions have been proposed to facilitate users to shoot images.
目前具有影像擷取功能的裝置都包含有變焦(Zoom)的功能，讓使用者可以決定所要拍攝畫面的主體與場景。其中變焦的方式主要為光學與數位變焦。傳統上，光學變焦主要是改變鏡頭中鏡片的相對位置來改變鏡頭的焦距，使拍攝畫面上在遠處的景物可變得更清晰。數位變焦則是透過影像處理的運算，增加拍攝畫面上的像素面積，從而達到影像放大的目的。 Currently, the device with image capture function includes a zoom function, which allows the user to determine the subject and scene of the desired picture. Among them, the way of zooming is mainly optical and digital zoom. Traditionally, optical zoom has mainly changed the relative position of the lens in the lens to change the focal length of the lens, so that the distant scene on the picture can be made clearer. Digital zoom is an image processing operation that increases the pixel area on the captured image to achieve image magnification.
然而，目前使用變焦的方式大都需要使用者利用手動的方式來進行多次調整才能達到使用者需求，在操作過程上時常造成使用者在拍攝上的不便。 However, most of the current methods of using the zoom require the user to perform multiple adjustments in a manual manner to meet the user's needs, which often causes inconvenience to the user during the operation.
有鑑於此，本發明提供一種影像擷取方法及裝置，可自動依據畫面中主體物件的分佈進行變焦，以達到自動調整擷取畫面的功效。 In view of the above, the present invention provides an image capturing method and device, which can automatically zoom according to the distribution of the main object in the screen, so as to achieve the effect of automatically adjusting the captured image.
本發明的影像擷取方法適用於具有影像擷取單元的電子裝置。此方法先利用影像擷取單元擷取檢視畫面。接著偵測出現在檢視畫面中的物件，並取得物件在檢視畫面中的分佈資訊，以根據分佈資訊辨識物件中的主體物件。並且，計算主體物件在檢視畫面中的上邊界值及下邊界值並判斷是否分別等於上邊界設定值及下邊界設定值。當上邊界值不等於上邊界設定值或下邊界值不等於下邊界設定值時，將檢視畫面進行縮放，以使得主體物件的上邊界值與下邊界值分別等於上邊界設定值與下邊界設定值。並且，依據檢視畫面的縮放比例呈現擷取畫面。 The image capturing method of the present invention is applicable to an electronic device having an image capturing unit. This method first uses the image capture unit to capture the view. Then, the object appearing in the view screen is detected, and the distribution information of the object in the view screen is obtained to identify the object object in the object according to the distribution information. Then, the upper boundary value and the lower boundary value of the subject object in the view screen are calculated and determined whether they are equal to the upper boundary set value and the lower boundary set value, respectively. When the upper boundary value is not equal to the upper boundary set value or the lower boundary value is not equal to the lower boundary set value, the view screen is scaled so that the upper boundary value and the lower boundary value of the main object are equal to the upper boundary set value and the lower boundary set respectively. value. And, the capture screen is presented according to the zoom ratio of the view screen.
本發明的影像擷取裝置，包括影像擷取單元、儲存單元以及處理單元。其中，影像擷取單元用以擷取影像，儲存單元用以記錄多個模組，而處理單元耦接影像擷取單元及儲存單元，用以存取並執行儲存單元中記錄的模組。所述模組包括畫面擷取模組、畫面偵測模組、邊界值計算模組、畫面縮放模組以及畫面呈現模組。畫面擷取模組是用以利用影像擷取單元擷取檢視畫面。畫面偵測模組是用以偵測出現在檢視畫面中的物件，並取得物件在檢視畫面中的分佈資訊，以根據分佈資訊辨識物件中的主體物件。邊界值計算模組是用以計算主體物件在檢視畫面中的上邊界 值及下邊界值並判斷是否分別等於上邊界設定值及下邊界設定值。畫面縮放模組是用以當上邊界值不等於上邊界設定值或下邊界值不等於下邊界設定值時，將檢視畫面進行縮放，以使得主體物件的上邊界值與下邊界值分別等於上邊界設定值與下邊界設定值。畫面呈現模組是用以依據檢視畫面的縮放比例呈現擷取畫面。 The image capturing device of the present invention comprises an image capturing unit, a storage unit and a processing unit. The image capturing unit is configured to capture images, the storage unit is configured to record a plurality of modules, and the processing unit is coupled to the image capturing unit and the storage unit for accessing and executing the modules recorded in the storage unit. The module includes a screen capture module, a screen detection module, a boundary value calculation module, a screen zoom module, and a screen presentation module. The screen capture module is configured to capture the view screen by using the image capture unit. The image detection module is configured to detect an object appearing in the view screen, and obtain distribution information of the object in the view screen to identify the object object in the object according to the distribution information. The boundary value calculation module is used to calculate the upper boundary of the subject object in the view screen. The value and the lower boundary value are judged whether they are equal to the upper boundary set value and the lower boundary set value, respectively. The picture zooming module is configured to scale the view image when the upper boundary value is not equal to the upper boundary set value or the lower boundary value is not equal to the lower boundary set value, so that the upper boundary value and the lower boundary value of the main object are respectively equal to The boundary set value and the lower boundary set value. The screen presentation module is configured to present the captured image according to the zoom ratio of the view screen.
基於上述，本發明的影像擷取方法及裝置，可當使用者所要拍攝的畫面含有主體物件時，透過演算法來依據主體物件在畫面上的分佈自動地縮放畫面，以自動進行變焦調整。藉此，在使用者進行拍攝前，便已經自動地調整到最適合的畫面，可減少手動變焦所需的時間與誤差，進而提高拍攝的精確度與便利性。 Based on the above, the image capturing method and apparatus of the present invention can automatically zoom the screen according to the distribution of the main object on the screen through the algorithm when the image to be captured by the user includes the main object, to automatically perform zoom adjustment. Thereby, before the user performs shooting, the user has automatically adjusted to the most suitable picture, which can reduce the time and error required for manual zooming, thereby improving the accuracy and convenience of shooting.
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式做詳細說明如下。 The above described features and advantages of the present invention will be more apparent from the following description.
100、500‧‧‧電子裝置 100, 500‧‧‧ electronic devices
110、510‧‧‧影像擷取單元 110, 510‧‧‧Image capture unit
120、520‧‧‧儲存單元 120, 520‧‧‧ storage unit
121、521‧‧‧畫面擷取模組 121, 521‧‧‧ screen capture module
122、522‧‧‧畫面偵測模組 122, 522‧‧‧ Picture Detection Module
123、523‧‧‧邊界值計算模組 123, 523‧‧‧ boundary value calculation module
124、524‧‧‧畫面縮放模組 124, 524‧‧‧ screen zoom module
125、525‧‧‧畫面呈現模組 125, 525‧‧‧ screen presentation module
130、530‧‧‧處理單元 130, 530‧‧ ‧ processing unit
300、400‧‧‧檢視畫面 300, 400‧‧‧ view screen
526‧‧‧畫面呈現模組 526‧‧‧ Screen Presentation Module
527‧‧‧瞳孔偵測模組 527‧‧‧瞳孔检测模块
540‧‧‧重力感測單元 540‧‧‧Gravity sensing unit
BND1‧‧‧上邊界值 BND1‧‧‧ upper boundary value
BND2‧‧‧下邊界值 BND2‧‧‧ lower boundary value
Mobj‧‧‧主體物件 Mobj‧‧‧ body object
SET1‧‧‧上邊界設定值 SET1‧‧‧ upper boundary setting
SET2‧‧‧下邊界設定值 SET2‧‧‧ lower boundary setting
S210~S250、S610~S620、S710~S720‧‧‧影像擷取方法的各步驟 S210~S250, S610~S620, S710~S720‧‧‧ steps of image capture method
圖1是依照本發明一實施例所繪示之影像擷取裝置的方塊圖。 FIG. 1 is a block diagram of an image capture device according to an embodiment of the invention.
圖2是依照本發明一實施例所繪示之影像擷取方法的流程圖。 2 is a flow chart of an image capture method according to an embodiment of the invention.
圖3是依照本發明一實施例所繪示之檢視畫面的範例。 FIG. 3 is a diagram showing an example of a view screen according to an embodiment of the invention.
圖4是依照本發明一實施例所繪示之檢視畫面的範例。 FIG. 4 is a diagram showing an example of a view screen according to an embodiment of the invention.
圖5是依照本發明一實施例所繪示之影像擷取裝置的方塊圖。 FIG. 5 is a block diagram of an image capture device according to an embodiment of the invention.
圖6是依照本發明一實施例所繪示之影像擷取方法的流程圖。 FIG. 6 is a flowchart of an image capturing method according to an embodiment of the invention.
圖7是依照本發明一實施例所繪示之影像擷取方法的流程圖。 FIG. 7 is a flowchart of an image capturing method according to an embodiment of the invention.
圖1是依照本發明一實施例所繪示之影像擷取裝置的方塊圖。請參照圖1，本實施例的電子裝置100包括影像擷取單元110、儲存單元120以及處理單元130。本實施例的電子裝置100可以是數位相機，或是手機、平板電腦等其他具備影像擷取設備的電子裝置，在此並不限制其種類。 FIG. 1 is a block diagram of an image capture device according to an embodiment of the invention. Referring to FIG. 1 , the electronic device 100 of the embodiment includes an image capturing unit 110 , a storage unit 120 , and a processing unit 130 . The electronic device 100 of the embodiment may be a digital camera, or another electronic device having an image capturing device such as a mobile phone or a tablet computer, and the type thereof is not limited herein.
影像擷取單元110例如是包含光學鏡頭，以及電荷耦合元件(Charge Coupled Device，CCD)或互補金氧半導體(Complementary Metal-Oxide Semiconductor，CMOS)元件等感光元件的裝置，在本實施例中，影像擷取單元110用以擷取影像。 The image capturing unit 110 is, for example, a device including an optical lens, and a photosensitive element such as a charge coupled device (CCD) or a complementary metal-oxygen semiconductor (CMOS) device. In this embodiment, the image is used. The capturing unit 110 is configured to capture an image.
儲存單元120可以是電子裝置100的主記憶體、任何型態的固定或可移動隨機存取記憶體(random access memory，RAM)、唯讀記憶體(read-only memory，ROM)、快閃記憶體(flash memory)或類似元件或上述元件的組合，而用以記錄可由處理單元130執行的多個模組，這些模組可載入處理單元130以執行影像擷取功能。此外，本實施例中所述儲存單元120並未限制是單一記憶體元件，上述之各軟體模組與影像資料亦可以分開儲存在不同的二個或二個以上之相同或不同型態之記憶體元件中。 The storage unit 120 can be the main memory of the electronic device 100, any type of fixed or removable random access memory (RAM), read-only memory (ROM), flash memory. A flash memory or similar component or combination of the above components is used to record a plurality of modules executable by the processing unit 130, and the modules can be loaded into the processing unit 130 to perform an image capture function. In addition, the storage unit 120 in the embodiment is not limited to a single memory component, and the software modules and the image data may be separately stored in different two or more memories of the same or different types. In the body component.
處理單元130例如是具有單核心或多核心的中央處理單元(Central Processing Unit，CPU)，或是其他可程式化之一般用途或特殊用途的微處理器(Microprocessor)、數位訊號處理器(Digital Signal Processor，DSP)、可程式化控制器、特殊應用積 體電路(Application Specific Integrated Circuits，ASIC)、可程式化邏輯裝置(Programmable Logic Device，PLD)或其他類似裝置或這些裝置的組合。處理單元130係分別耦接影像擷取單元110及儲存單元120，而可存取並執行記錄在儲存單元120中的模組，以實現影像擷取功能。 The processing unit 130 is, for example, a central processing unit (CPU) having a single core or multiple cores, or other programmable general purpose or special purpose microprocessor (Microprocessor), digital signal processor (Digital Signal) Processor, DSP), programmable controller, special application product Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), or other similar devices or combinations of these devices. The processing unit 130 is coupled to the image capturing unit 110 and the storage unit 120, and can access and execute the module recorded in the storage unit 120 to implement the image capturing function.
上述模組包括畫面擷取模組121、畫面偵測模組122、邊界值計算模組123、畫面縮放模組124以及畫面呈現模組125。這些模組例如是電腦程式，其可載入處理單元130，從而執行影像擷取功能。以下即舉實施例說明電子裝置100執行影像擷取的詳細步驟。 The module includes a screen capture module 121, a screen detection module 122, a boundary value calculation module 123, a screen zoom module 124, and a screen presentation module 125. These modules are, for example, computer programs that can be loaded into the processing unit 130 to perform image capture functions. The following is a detailed description of the detailed steps of the electronic device 100 performing image capture.
圖2是依照本發明一實施例所繪示之影像擷取方法的流程圖。請同時參照圖1及圖2，本實施例的影像擷取方法適用於圖1的電子裝置100，以下即搭配電子裝置100中的各項元件說明本發明實施例之影像擷取方法的各個步驟。 2 is a flow chart of an image capture method according to an embodiment of the invention. Referring to FIG. 1 and FIG. 2 simultaneously, the image capturing method of the present embodiment is applicable to the electronic device 100 of FIG. 1. Hereinafter, the steps of the image capturing method of the embodiment of the present invention will be described with reference to various components in the electronic device 100. .
在步驟S210中，畫面擷取模組121可利用影像擷取單元110擷取檢視畫面。其中，檢視畫面中可包括多個物件。所述物件可以是人物、動物、或其他任何特定物體，本發明實施例對物件的種類並未加以限制。 In step S210, the screen capture module 121 can capture the view screen by using the image capture unit 110. Wherein, a plurality of objects may be included in the view screen. The object may be a character, an animal, or any other specific object, and the type of the object is not limited in the embodiment of the present invention.
具體來說，本發明實施例的畫面擷取模組121利用使用者在使用電子裝置100擷取影像時，必須固定住電子裝置100以順利對焦擷取影像的特性，將電子裝置100的移動停止作為判斷使用者欲擷取影像的根據。因此，電子裝置100可包括加速度感 測器，並藉以測量自身的運動狀態。在步驟S210中，畫面擷取模組121可透過加速度感測器判斷電子裝置100是否在移動狀態，並當電子裝置100不在移動狀態(由移動變為停止)時，判斷使用者欲使用電子裝置100進行當前畫面的影像擷取。因此，畫面擷取模組121可在此時利用影像擷取單元110自動擷取當前畫面作為檢視畫面，以在使用者擷取影像前預先對檢視畫面中的物件進行分析，從而達到自動調整的功能。 Specifically, the screen capture module 121 of the embodiment of the present invention needs to fix the electronic device 100 to capture the characteristics of the captured image when the user uses the electronic device 100 to capture the image, and stops the movement of the electronic device 100. As a basis for judging the user's desire to capture images. Therefore, the electronic device 100 can include a sense of acceleration Measurer and measure its own state of motion. In step S210, the screen capture module 121 can determine whether the electronic device 100 is in a moving state through the acceleration sensor, and determine that the user wants to use the electronic device when the electronic device 100 is not in the moving state (from moving to stopping). 100 performs image capture of the current screen. Therefore, the image capturing module 121 can automatically capture the current image as the viewing screen by using the image capturing unit 110 at this time, so as to analyze the objects in the viewing screen before the user captures the image, thereby automatically adjusting. Features.
另外，在一實施例中，畫面擷取模組121亦可透過當前畫面內容的變動判斷電子裝置100是否在移動狀態。進一步來說，畫面擷取模組121亦可當電子裝置100的當前畫面內容停止變動時，判斷使用者欲使用電子裝置100進行當前畫面的影像擷取。此時，畫面擷取模組121亦可透過影像擷取單元110自動擷取當前畫面作為檢視畫面，以對檢視畫面中的物件進行分析。 In addition, in an embodiment, the screen capture module 121 can also determine whether the electronic device 100 is in a moving state by changing the current screen content. Further, the screen capture module 121 may determine that the user wants to use the electronic device 100 to perform image capture of the current screen when the current screen content of the electronic device 100 stops changing. At this time, the image capturing module 121 can also automatically capture the current image as a viewing screen through the image capturing unit 110 to analyze the objects in the viewing screen.
接著，在步驟S220中，畫面偵測模組122可偵測出現在檢視畫面中的物件，並取得物件在檢視畫面中的分佈資訊，以根據分佈資訊辨識物件中的主體物件。具體來說，在取得檢視畫面之後，畫面偵測模組122可偵測並分析出現在檢視畫面中的物件，例如偵測檢視畫面中的物件的數目、大小、位置或外觀特徵等，並且由上述資訊構成每個物件在檢視畫面中的分佈資訊。在一實施例中，畫面偵測模組122可根據分佈資訊得知每個物件的外觀特徵。並且，畫面偵測模組122會根據各物件的外觀特徵，判斷物件中作為拍攝重點的主體物件。上述外觀特徵可以例如是人臉 的左眼、右眼、嘴巴、臉部輪廓等其中之一或其組合，因此畫面偵測模組122在經過比對後，便可辨識出作為拍攝重點的人物(主體物件)。 Then, in step S220, the screen detection module 122 can detect the objects appearing in the view screen, and obtain the distribution information of the objects in the view screen to identify the object objects in the object according to the distribution information. Specifically, after obtaining the view screen, the screen detection module 122 can detect and analyze the objects appearing in the view screen, for example, detecting the number, size, position, or appearance characteristics of the objects in the view screen, and The above information constitutes the distribution information of each object in the view screen. In an embodiment, the image detection module 122 can know the appearance characteristics of each object according to the distribution information. Moreover, the screen detecting module 122 determines the main object in the object as the shooting focus according to the appearance characteristics of each object. The above appearance feature may be, for example, a human face One or a combination of the left eye, the right eye, the mouth, the facial contour, and the like, so that after the comparison, the image detecting module 122 can recognize the person (the main object) that is the focus of the shooting.
此外，在一實施例中，上述外觀特徵亦可包括物件的外型及顏色等。畫面偵測模組122可根據每個物件的外型及顏色判斷與週遭景物的差異，辨識出作為拍攝重點的主體物件。值得一提的是，本發明實施例未限制主體物件的數目，畫面偵測模組122亦可依照使用者的不同需求將檢視畫面中數目最多的物件、大小最大的物件、或位置最中間的多個物件辨識為主體物件。 In addition, in an embodiment, the appearance features described above may also include the appearance, color, and the like of the article. The image detecting module 122 can determine the difference between the surrounding object and the color of each object according to the appearance and color of each object, and identify the main object as the focus of the shooting. It is to be noted that, in the embodiment of the present invention, the number of the object objects is not limited, and the image detecting module 122 can also view the object with the largest number of objects, the largest object, or the middle of the position according to different needs of the user. A plurality of objects are identified as the main object.
需說明的是，在一實施例中，除了根據所測得的分佈資訊辨識物件中的主體物件之外，本發明實施例的電子裝置100亦可接收使用者例如在觸控式的螢幕上以手動方式直接框選主體物件，並進行後續對主體物件的分析。 It should be noted that, in an embodiment, the electronic device 100 of the embodiment of the present invention can receive the user, for example, on a touch screen, in addition to identifying the main object in the object according to the measured distribution information. The main object is directly selected by manual mode, and subsequent analysis of the main object is performed.
請再參照圖2，在步驟S230中，邊界值計算模組123可計算所辨識出的主體物件在檢視畫面中的上邊界值及下邊界值並判斷是否分別等於上邊界設定值及下邊界設定值。舉例來說，圖3是依照本發明一實施例所繪示之檢視畫面的範例。請參照圖3，在圖3的檢視畫面300中具有由畫面偵測模組122所辨識的主體物件Mobj。邊界值計算模組123可計算主體物件Mobj在檢視畫面300中的上邊界值BND1及下邊界值BND2並判斷是否分別等於上邊界設定值SET1及下邊界設定值SET2。其中，上邊界設定值SET1及下邊界設定值SET2可由使用者依據對拍攝影像中有關主體物 件所占拍攝之畫面範圍的需求而事先進行設定。例如，在圖3中，將檢視畫面300底部平行線的邊界值設定為0，檢視畫面300頂部平行線的邊界值設定為100。並且，上邊界設定值SET1以下的區域可例如是檢視畫面300中百分之80的區域而將上邊界設定值SET1設定為80。下邊界設定值SET2以下的區域可例如是檢視畫面300中百分之20的區域，而將下邊界設定值SET2設定為20，但本發明實施例並不依此為限。 Referring to FIG. 2 again, in step S230, the boundary value calculation module 123 can calculate the upper boundary value and the lower boundary value of the identified subject object in the view screen and determine whether it is equal to the upper boundary set value and the lower boundary setting, respectively. value. For example, FIG. 3 is an example of a view screen according to an embodiment of the invention. Referring to FIG. 3, the view object 300 of FIG. 3 has a main object Mobj recognized by the screen detection module 122. The boundary value calculation module 123 can calculate the upper boundary value BND1 and the lower boundary value BND2 of the main object Mobj in the view screen 300 and determine whether it is equal to the upper boundary set value SET1 and the lower boundary set value SET2, respectively. Wherein, the upper boundary set value SET1 and the lower boundary set value SET2 can be determined by the user according to the relevant subject matter in the captured image The settings are set in advance for the size of the screen to be captured. For example, in FIG. 3, the boundary value of the parallel line at the bottom of the view screen 300 is set to 0, and the boundary value of the top parallel line of the view screen 300 is set to 100. Further, the region below the upper boundary set value SET1 may be, for example, an area of 80% in the view screen 300 and an upper boundary set value SET1 of 80. The area below the lower boundary set value SET2 may be, for example, a region of 20% in the view screen 300, and the lower boundary set value SET2 is set to 20, but the embodiment of the present invention is not limited thereto.
當如圖3所示，邊界值計算模組123所計算的主體物件Mobj在檢視畫面300中的上邊界值BND1為70、下邊界值BND2為30。因此，上邊界值BND1不等於上邊界設定值SET1，且下邊界值BND2不等於下邊界設定值SET2。邊界值計算模組123便會分析主體物件300距離上邊界設定值SET1及下邊界設定值SET2所需的畫面縮放比例，並且將分析結果傳送至畫面縮放模組124。接著，在步驟S240中，畫面縮放模組124可自動透過特定變焦方式將檢視畫面300進行縮放，以使得主體物件Mobj的上邊界值BND1與下邊界值BND2分別等於上邊界設定值SET1與下邊界設定值SET2，達到自動變焦的效果。其中，所述變焦方式包含光學變焦及數位變焦，但本發明並不對變焦方式進行限制。 As shown in FIG. 3, the upper boundary value BND1 of the main object Mobj calculated by the boundary value calculation module 123 in the view screen 300 is 70, and the lower boundary value BND2 is 30. Therefore, the upper boundary value BND1 is not equal to the upper boundary set value SET1, and the lower boundary value BND2 is not equal to the lower boundary set value SET2. The boundary value calculation module 123 analyzes the screen zoom ratio required by the object object 300 from the upper boundary set value SET1 and the lower boundary set value SET2, and transmits the analysis result to the screen zoom module 124. Next, in step S240, the screen zooming module 124 can automatically zoom the view screen 300 by a specific zoom mode so that the upper boundary value BND1 and the lower boundary value BND2 of the main object Mobj are equal to the upper boundary set value SET1 and the lower boundary, respectively. Set the value SET2 to achieve the effect of auto zoom. Wherein, the zoom mode includes optical zoom and digital zoom, but the zoom mode is not limited by the present invention.
舉例來說，圖4是依照本發明一實施例所繪示之檢視畫面的範例。請參照圖4，在經過縮放調整的檢視畫面400中，主體物件Mobj的上邊界值BND1與下邊界值BND2分別等於上邊界設定值SET1(例如為80)與下邊界設定值SET2(例如為20)，因 此，經過縮放調整的檢視畫面400達到了放大主體物件Mobj(變焦)的效果。 For example, FIG. 4 is an example of a view screen according to an embodiment of the invention. Referring to FIG. 4, in the zoom-view view 400, the upper boundary value BND1 and the lower boundary value BND2 of the main object Mobj are equal to the upper boundary set value SET1 (for example, 80) and the lower boundary set value SET2 (for example, 20). ),because Thus, the zoom-inspected view screen 400 achieves the effect of magnifying the subject object Mobj (zoom).
最後，在步驟S250中，畫面呈現模組125可依據檢視畫面的縮放比例呈現擷取畫面。舉例來說，畫面呈現模組125可依據圖4中自動變焦後的檢視畫面400的縮放比例，將可供擷取的擷取畫面呈現於電子裝置100所具備的顯示器上，以提供使用者預覽，讓使用者可直接對自動變焦後的畫面進行擷取或調整，以減少手動變焦所需的時間與誤差。 Finally, in step S250, the screen presentation module 125 can present the capture screen according to the zoom ratio of the view screen. For example, the screen presentation module 125 can display the captured image that can be captured on the display provided by the electronic device 100 according to the zoom ratio of the auto-zoomed view screen 400 in FIG. 4 to provide a user preview. Allows the user to directly capture or adjust the image after auto zoom to reduce the time and error required for manual zoom.
另一方面，在步驟S230之後，當主體物件在檢視畫面中的上邊界值及下邊界值分別等於預先設定的上邊界設定值及下邊界設定值時，畫面縮放模組124不會對檢視畫面進行縮放(縮放比例為0)。在此情況下，在步驟S250中，畫面呈現模組125可不經變焦而直接將可供擷取的擷取畫面呈現於電子裝置100所具備的顯示器上，以提供使用者預覽，讓使用者可對擷取畫面進行擷取或調整。 On the other hand, after step S230, when the upper boundary value and the lower boundary value of the subject object in the view screen are respectively equal to the preset upper boundary set value and the lower boundary set value, the screen zoom module 124 does not view the view screen. Scale (scaled to 0). In this case, in step S250, the screen presentation module 125 can directly display the captured image that can be captured on the display provided by the electronic device 100 without zooming, so as to provide a user preview, so that the user can Capture or adjust the captured image.
此外，在某些情況下，若是經由畫面縮放模組124所進行的自動變焦後仍無法足以讓主體物件的上邊界值及下邊界值分別等於預先設定的上邊界設定值及下邊界設定值時，邊界值計算模組123可估計電子裝置100與主體物件之間達成上述要求所需移動的距離，並例如透過語音提示、震動提示以及顯示提示提醒使用者移動電子裝置100的位置。語音提示可例如告知使用者電子裝置100距離主體物件過近或太遠，請使用者調整電子裝置100 的位置。震動提示可透過震動週期表示電子裝置100與主體物件的距離，例如當距離過近則震動週期越長，當距離過遠則震動週期越短，以及當距離符合規定時不再震動等。並且，除了電子裝置100本身之外，震動提示亦可產生於適用電子裝置100的控制器上。例如，與電子裝置100以無線傳輸建立連結而能對電子裝置100進行拍照搖控的控制器。藉此，當電子裝置100不再使用者手上時，可透過控制器將震動提示傳遞至使用者。此外，顯示提示除了直接顯示於顯示器之外，亦可透過發光二極體或是影像擷取單元110所附的閃光燈，以不同的閃爍頻率提醒使用者。 In addition, in some cases, if the automatic zooming by the screen zooming module 124 is still not enough, the upper boundary value and the lower boundary value of the main object are equal to the preset upper boundary setting value and the lower boundary setting value, respectively. The boundary value calculation module 123 can estimate the distance between the electronic device 100 and the main object to achieve the above-mentioned requirements, and remind the user to move the position of the electronic device 100, for example, through a voice prompt, a vibration prompt, and a display prompt. The voice prompt can, for example, inform the user that the electronic device 100 is too close or too far from the main object, and the user is required to adjust the electronic device 100. s position. The vibration prompt can indicate the distance between the electronic device 100 and the main object through the vibration period. For example, the vibration period is longer when the distance is too close, the vibration period is shorter when the distance is too far, and the vibration is no longer vibrated when the distance meets the requirements. Moreover, in addition to the electronic device 100 itself, a vibrating alert can also be generated on the controller of the applicable electronic device 100. For example, a controller that can establish a connection with the electronic device 100 by wireless transmission and can take a photo remote control of the electronic device 100. Thereby, when the electronic device 100 is no longer in the user's hand, the vibration prompt can be transmitted to the user through the controller. In addition, the display prompts can be used to alert the user at different blinking frequencies through the flash diode attached to the LED or the image capturing unit 110, in addition to being directly displayed on the display.
藉由上述方法，電子裝置100可依據主體物件在檢視畫面上的分佈自動地縮放畫面，以自動進行變焦調整，提高拍攝的精確度與便利性。 By the above method, the electronic device 100 can automatically zoom the screen according to the distribution of the subject object on the viewing screen to automatically perform zoom adjustment, thereby improving the accuracy and convenience of shooting.
值得一提的是，當依據檢視畫面的縮放比例呈現擷取畫面之後，在使用者擷取影像的過程中，仍有可能移動電子裝置的位置(如向前或向後移動)，使得擷取畫面中主體物件的大小發生變化。因此，在本發明的另一實施例中，在經過前述實施例圖2中的影像擷取方法而呈現擷取畫面(步驟S250)之後，電子裝置可感測裝置本身與主體物件之間距離的改變，並且對應地動態調整畫面中主體物件的大小，以防止擷取畫面時發生誤差。 It is worth mentioning that, after the captured image is presented according to the zoom ratio of the view screen, it is still possible to move the position of the electronic device (such as moving forward or backward) during the process of capturing the image by the user, so that the captured image is captured. The size of the main object changes. Therefore, in another embodiment of the present invention, after the captured image is presented through the image capturing method in FIG. 2 of the foregoing embodiment (step S250), the electronic device can sense the distance between the device itself and the main object. Change, and correspondingly dynamically adjust the size of the subject object in the picture to prevent errors when capturing the picture.
舉例來說，圖5是依照本發明一實施例所繪示之影像擷取裝置的方塊圖。請參照圖5，本實施例的電子裝置500包括影像擷取單元510、儲存單元520以及處理單元530。儲存單元520用 以記錄可由處理單元530執行的多個模組，包括畫面擷取模組521、畫面偵測模組522、邊界值計算模組523、畫面縮放模組524、畫面呈現模組525。上述元件的功能係與前述實施例中對應元件的功能相同或相似，故其詳細內容在此不再贅述。 For example, FIG. 5 is a block diagram of an image capturing device according to an embodiment of the invention. Referring to FIG. 5 , the electronic device 500 of the embodiment includes an image capturing unit 510 , a storage unit 520 , and a processing unit 530 . Storage unit 520 The plurality of modules executable by the processing unit 530 are recorded, including a screen capture module 521, a screen detection module 522, a boundary value calculation module 523, a screen zoom module 524, and a screen presentation module 525. The functions of the above components are the same as or similar to those of the corresponding components in the foregoing embodiments, and thus the details thereof will not be repeated herein.
與上述實施例不同的是，在本實施例中，電子裝置500更包括重力感測單元540。重力感測單元540耦接處理單元530，可以是任何類型可對裝置本身位置的方向與移動量進行偵測的元件/電路，例如為重力感測器(G-sensor)。並且，在圖5中，儲存單元520更記錄有移動量計算模組526以及瞳孔偵測模組527。 Different from the above embodiment, in the embodiment, the electronic device 500 further includes a gravity sensing unit 540. The gravity sensing unit 540 is coupled to the processing unit 530 and can be any type of component/circuit that can detect the direction and amount of movement of the device itself, such as a gravity sensor (G-sensor). Moreover, in FIG. 5, the storage unit 520 further records the movement amount calculation module 526 and the pupil detection module 527.
圖6是依照本發明一實施例所繪示之影像擷取方法的流程圖。請同時參照圖5及圖6，本實施例的影像擷取方法的流程可接續於前述實施例的步驟S250之後進行。並且此方法適用於圖5的電子裝置500，以下即搭配電子裝置500中的各項元件說明本發明實施例之影像擷取方法的各個步驟。 FIG. 6 is a flowchart of an image capturing method according to an embodiment of the invention. Referring to FIG. 5 and FIG. 6 simultaneously, the flow of the image capturing method of this embodiment may be performed after step S250 of the foregoing embodiment. The method is applicable to the electronic device 500 of FIG. 5, and the steps of the image capturing method of the embodiment of the present invention are described below with the components in the electronic device 500.
在步驟S610中，移動量計算模組526可利用重力感測單元540計算電子裝置500在各方向上的移動量。具體來說，重力感測單元540可將電子裝置500移動前的位置當作參考座標而將其座標值(x，y，z)設為(0，0，0)，並持續偵測電子裝置500是否移動。當重力感測單元540偵測到電子裝置500在x軸方向上移動而將座標值對應其移動量而例如修改成(3，0，0)時，移動量計算模組526就可由重力感測單元540所提供的新座標值而計算出使用者與電子裝置500在各方向上(例如x軸方向)對應 的移動量。 In step S610, the movement amount calculation module 526 can calculate the movement amount of the electronic device 500 in each direction by using the gravity sensing unit 540. Specifically, the gravity sensing unit 540 can use the position before the electronic device 500 moves as a reference coordinate and set its coordinate value (x, y, z) to (0, 0, 0), and continuously detect the electronic device. 500 is moving. When the gravity sensing unit 540 detects that the electronic device 500 moves in the x-axis direction and the coordinate value corresponds to the amount of movement thereof, for example, to (3, 0, 0), the movement amount calculation module 526 can be sensed by gravity. The new coordinate value provided by the unit 540 calculates that the user corresponds to the electronic device 500 in all directions (for example, the x-axis direction). The amount of movement.
並且，在步驟S620中，畫面縮放模組524即可依據所計算的移動量將擷取畫面關聯於主體物件進行縮放。具體來說，畫面縮放模組524可依據移動量計算模組526所計算的移動量與主體物件的位置推斷出在擷取畫面中主體物件的變化情形。舉例來說，當電子裝置500向前接近主體物件時，在擷取畫面中的主體物件會變大。此時，畫面縮放模組524可依據移動量計算模組526所計算的移動量推估主體物件需要縮小的程度，並將擷取畫面進行縮小。如此，即可達到動態調整的目的，防止擷取畫面時發生誤差。 Moreover, in step S620, the screen zooming module 524 can scale the captured image to the subject object according to the calculated amount of movement. Specifically, the screen zooming module 524 can infer the change of the main object in the captured image according to the amount of movement calculated by the movement amount calculation module 526 and the position of the main object. For example, when the electronic device 500 approaches the subject object forward, the subject object in the captured image may become larger. At this time, the screen zooming module 524 can estimate the degree of reduction of the main object according to the amount of movement calculated by the movement amount calculation module 526, and reduce the captured image. In this way, the purpose of dynamic adjustment can be achieved, preventing errors in capturing the picture.
在本發明的另一實施例中，電子裝置可利用主體物件的瞳孔因反應於電子裝置的螢幕光源的影響(特別是在自拍的情況下)而放大或縮小，來推斷電子裝置的主體物件的距離。 In another embodiment of the present invention, the electronic device can infer that the main body of the electronic device is enlarged or reduced by utilizing the pupil of the main body member in response to the influence of the screen light source of the electronic device (especially in the case of a self-photograph). distance.
圖7是依照本發明一實施例所繪示之影像擷取方法的流程圖。請同時參照圖5及圖7，本實施例的影像擷取方法的流程可接續於前述實施例的步驟S250之後進行。並且此方法適用於圖5的電子裝置500，以下即搭配電子裝置500中的各項元件說明本發明實施例之影像擷取方法的各個步驟。 FIG. 7 is a flowchart of an image capturing method according to an embodiment of the invention. Referring to FIG. 5 and FIG. 7 simultaneously, the flow of the image capturing method of this embodiment may be performed after step S250 of the foregoing embodiment. The method is applicable to the electronic device 500 of FIG. 5, and the steps of the image capturing method of the embodiment of the present invention are described below with the components in the electronic device 500.
在步驟S710中，瞳孔偵測模組527可偵測擷取畫面中主體物件的瞳孔大小值。具體來說，瞳孔偵測模組527可先偵測擷取畫面中主體物件的眼球畫面，並分析瞳孔大小。 In step S710, the pupil detection module 527 can detect the pupil size value of the main object in the captured image. Specifically, the pupil detection module 527 can first detect the eyeball image of the main object in the captured image and analyze the pupil size.
在步驟S720中，畫面縮放模組524可依據所偵測到的瞳 孔大小值將擷取畫面關聯於主體物件進行縮放。具體來說，在本實施例中，可事先建立關於眼球資料的資料庫於儲存單元520。此資料庫記錄有多個作為主體物件的人物的眼球資料。眼球資料可包括各人物的眼球瞳孔在相距標準距離下反應於電子裝置500的螢幕光源影響的瞳孔大小區間。其中，標準距離可為每個作為主體物件的人物與電子裝置500之間可使在擷取畫面中的人物大小符合拍攝需求的距離。 In step S720, the screen zoom module 524 can be based on the detected flaws. The hole size value scales the captured image to the subject object for scaling. Specifically, in the present embodiment, a database about eyeball data can be established in advance in the storage unit 520. This database records the eyeball data of a number of people as subject objects. The eyeball data may include a pupil size interval in which the eye pupils of each character are reflected at a standard distance from the screen source of the electronic device 500. The standard distance may be a distance between the person as the main object and the electronic device 500 to make the size of the person in the captured image conform to the shooting requirement.
因此，畫面縮放模組524可先判斷擷取畫面中的主體物件的眼球資料是否存在於資料庫中。若是存在，畫面縮放模組524便可將偵測到的主體物件的瞳孔大小值與資料庫中對應的瞳孔大小區間進行比對。當瞳孔大小值小於所述瞳孔大小區間的下限門檻值時，表示電子裝置500與人物(主體物件)的距離較標準距離遠。此時，畫面縮放模組524可自動進行變焦來將擷取畫面放大。 Therefore, the screen zooming module 524 can first determine whether the eyeball data of the subject object in the captured image exists in the database. If present, the screen zoom module 524 can compare the detected pupil size value of the subject object with the corresponding pupil size interval in the database. When the pupil size value is smaller than the lower threshold value of the pupil size interval, it indicates that the distance between the electronic device 500 and the person (the subject object) is farther than the standard distance. At this time, the screen zooming module 524 can automatically zoom to enlarge the captured image.
另一方面，當瞳孔大小值大於所述瞳孔大小區間的上限門檻值時，表示電子裝置500與人物(主體物件)的距離較標準距離近。此時，畫面縮放模組524可自動進行變焦來將擷取畫面縮小。如此，亦可達到動態調整的目的，防止擷取畫面時發生誤差。 On the other hand, when the pupil size value is greater than the upper threshold value of the pupil size interval, it indicates that the distance between the electronic device 500 and the person (the subject object) is closer than the standard distance. At this time, the screen zooming module 524 can automatically zoom to reduce the captured image. In this way, the purpose of dynamic adjustment can also be achieved, preventing errors in capturing the screen.
綜上所述，本發明的影像擷取方法及裝置，可依據主體物件在畫面上的分佈自動地進行變焦調整。藉此，在使用者進行拍攝前自動地變焦而將畫面調整到最適合的縮放比例，可減少手 動變焦所需的時間與誤差，進而提高拍攝的精確度與便利性。 In summary, the image capturing method and apparatus of the present invention can automatically perform zoom adjustment according to the distribution of the main object on the screen. In this way, the user automatically zooms before the user takes a picture to adjust the picture to the most suitable zoom ratio, which can reduce the hand. The time and error required for zooming, which improves the accuracy and convenience of shooting.
雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。 Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.
S210~S250‧‧‧影像擷取方法的各步驟 S210~S250‧‧‧ steps of image capture method
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| TWI617194B (en) * | 2016-11-16 | 2018-03-01 | 晨星半導體股份有限公司 | Circuits for controlling image sensor and associated method |
| US10091386B2 (en) | 2016-11-16 | 2018-10-02 | Mstar Semiconductor, Inc. | Circuits for determining parameters for controlling an image sensor of an image capturing device and associated method |
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