1264611 五、發明說明（2) 知物體所產生的資料以偵測光源特性，且直接應用此資料 調整影像處理方式，藉此滅少影像失真，增加影像品質。 本發明的另一目的在於提出一種數位取像系統，在取 像系統中内建一個已知物體提供外界光源照射，再以光感 應器收取資料後，直接應用此資料調整影像處理方式，藉 此大幅降低系統建置成本。 為達成上述目的’本發明提供一種數位取像系統的偵 測方法。首先，利用光感應器接收光源照射該數位取像系 統中已知物體所產生的資料以偵測光源。接著，分析接收 的資料以解讀光源的特性參數。最後，根據解讀彳^的特性 參數調整數位取像系統中的影像處理方式。 ' 此外，本發明還提供一種數位取像系統，其包括己知 物體、光感應器、分析裝置以及影像處理裝置。光感應界 用以接收光源照射已知物體所產生的資料以债測光源了 ^ 析裝置用以分析光感應器所接收的資料以解讀光源的$ 特性參數。影像處理裝置，根據分析裝置所解讀後 參數调整影像處理方式並產生影像資料輸出。 為了讓本發明之上述和其他目的、特徵、和 明顯易懂，下文特舉實施例，並配合所 j:匕更 明如下·· W砰細况 實施方式 第1、圖係表示本發明之數位取像系統的偵測 紅圖。首先，利用光感應器接收光源照射數位取之μ 已知物體所產生的育料以偵測光源（步驟s丨〇 2)。接著、，’八 % 第5頁 0790-9197TWF(nl);PT-02001；ELLEN.ptd 1264611 五、發明說明（3) 析接料以解讀該光源的特性參數（步驟S104)。最 後m解讀後的特性參數調整數位 理方式（步驟S106)。 ^發:月還另外提* -種數位取像*統用 之方法：第2圖係表示實現第！圖之方法的數位取“1统範 例的不思圖。本發明之數位取像系統可應用數位相機、數 位攝影機、連結電腦之相機（PC Cam)、監視攝影系統、手 機或PDA上之取像裝置及一切經過鏡頭和感應器之數位取 像糸統中’在此以應用在數位相機中為例進行說明。 參考第2圖，數位取像系統2〇〇應用於數位相機（圖中 未顯示）中，其包括己知物體20 2、攝影裝置2〇4、光感應 206、分析裝置2〇8以及影像處理裝置21〇。攝影裝置2〇4 包括鏡頭、光圈及快門等元件，用於拍攝景物2 2 〇以得到 拍攝影像Ii ’並透過光感應器2 0 6轉換為數位影像資料。 光感應裔2 0 6亦用以接收光源2 3 〇照射已知物體2 〇 2所產生 的資料以偵測光源2 3 0，光行進的方向在圖中以虛線表 示。 要注意是’在數位取像系統中亦可用兩顆光感應器來 達成上述光感應器2 0 6的作用，一顆光感應器用於拍攝景 物’另一顆光感應器用以接收光源照射已知物體所產生的 資料以偵測光源，這顆新加入的光感應器為較廉價或尺寸 較小的感光器，請參考第4圖的說明。 分析裝置2 0 8用以分析光感應器2 0 6所接收的資料以解 讀光源的複數特性參數，這些特性參數可包括光源強度、1264611 V. INSTRUCTIONS (2) Know the information generated by the object to detect the characteristics of the light source, and directly apply this data to adjust the image processing mode, thereby reducing image distortion and increasing image quality. Another object of the present invention is to provide a digital image capturing system in which a known object is built in an image capturing system to provide external light source illumination, and then the data is directly applied by the light sensor to adjust the image processing mode. Significantly reduce system construction costs. In order to achieve the above object, the present invention provides a detection method of a digital image taking system. First, the light source is used to receive the light source to illuminate the data generated by the known object in the digital image capturing system to detect the light source. Next, the received data is analyzed to interpret the characteristic parameters of the light source. Finally, the image processing method in the digital image capturing system is adjusted according to the characteristic parameters of the interpretation 彳^. Further, the present invention provides a digital image capturing system including a known object, a light sensor, an analyzing device, and an image processing device. The light sensing boundary is used to receive the light source to illuminate the data generated by the known object to measure the light source. The analyzing device analyzes the data received by the light sensor to interpret the characteristic parameter of the light source. The image processing device adjusts the image processing mode based on the parameters read by the analysis device and generates image data output. The above and other objects, features, and aspects of the present invention are set forth in the description of the accompanying claims. The red image of the image capture system. First, the light source is used to receive the light source generated by the known object by the light source to detect the light source (step s丨〇 2). Next, '8%, page 5, 0790-9197TWF(nl); PT-02001; ELLEN.ptd 1264611 V. DESCRIPTION OF THE INVENTION (3) The material is analyzed to interpret the characteristic parameters of the light source (step S104). The characteristic parameter adjustment number modality after the final m interpretation (step S106). ^ hair: the month also mentions * - the method of digital image acquisition * unified method: the second picture shows the realization of the first! The digits of the method of the figure take the "1" example. The digital image capturing system of the present invention can be applied to a digital camera, a digital camera, a computer connected camera (PC Cam), a surveillance photography system, a mobile phone or a PDA. The device and everything in the digital image capture system through the lens and sensor are described here as an example in a digital camera. Referring to Figure 2, the digital image capture system 2〇〇 is applied to a digital camera (not shown) The camera includes a known object 20, a photographing device 2〇4, a light sensor 206, an analysis device 2〇8, and an image processing device 21〇. The photographing device 2〇4 includes components such as a lens, an aperture, and a shutter for photographing. Scene 2 2 〇 to get the captured image Ii ' and converted to digital image data through the light sensor 2 0 6 . The light sensory 2 0 6 is also used to receive the light source 2 3 〇 illuminate the information generated by the known object 2 〇 2 Detecting the light source 2 3 0, the direction of light travel is indicated by a dotted line in the figure. It should be noted that 'in the digital image capturing system, two light sensors can also be used to achieve the above-mentioned light sensor 2 0 6 , a light Sensor for shooting Scenery' Another light sensor is used to receive the light source to illuminate the data generated by known objects to detect the light source. This newly added light sensor is a cheaper or smaller size photoreceptor. Please refer to the description in Figure 4. The analyzing device 208 is configured to analyze the data received by the light sensor 206 to interpret the complex characteristic parameters of the light source, and the characteristic parameters may include the intensity of the light source,
0790-9197TWF(nl);PT-02001;ELLEN.ptd 第6頁 1264611 五、發明說明（4) 光譜分布、色溫以及光源的閃爍頻率。影像處理裝置2丄〇 根據分析裝置2 〇 8所解讀後的特性參數調整其内的影像處 理方式並產生影像資料I。輪出。 、， 己知物體20 2及光感應器20 6在數位相機中相對位置的 。羊、、'田α兒明凊參考第4圖及弟5圖。第2圖所示之系統，可以 幫助我們做光源的分析，例如光源的強度及光譜分析等， 這對1動曝光（ΑΕ)及自動白平衡（AWB)都有極大的幫助。 第3_圖為第2圖的數位取像系統進行偵測及取像流程之 ，例的示意圖。鏡頭、光圈及快門3〇4用於拍攝景物32〇， f此鏡頭、光圈及快門3 04做為第2圖中攝影裝置2〇4的實 ί:。光:原3 3 0同時5射到想要拍攝的景物320及均勻灰色 物3 0 2，在此以均勻灰色物3 〇2做為第2圖中 實施例。光感應器3 0 6接收光源33〇照射岣°物之 反射光後，可在分析裝置308内分析此光源：火色物之 (取平均值）1、綠紅比（等於平均綠色值/ t .強又 綠藍比gB(等於平均綠色值/平均g色 句紅色值）gR、 F。 凰巴值）及光源閃爍頻率 之心Η將光源掃描頻率F輪出控制拍攝景物 之曝先日寸間，以曝光時間必須為光源：：攝：物 光時間必須配合強度！值（系統組裝奴整數么且曝 及合理曝光時間計算出公式或建好對照^)，。可將強度I值 此外’亦可由均勻灰色物3 〇 2曝光 勻度得知曝光時間與光源閃爍頻率F是 取像結果的均 間必須為光源閃爍週期之整數倍）暖：配得宜（曝光時 +光時間不為光源0790-9197TWF(nl); PT-02001; ELLEN.ptd Page 6 1264611 V. Description of invention (4) Spectral distribution, color temperature, and flicker frequency of the light source. The image processing device 2 adjusts the image processing mode in accordance with the characteristic parameters interpreted by the analyzing device 2 to generate image data I. Take out. , the object 20 2 and the light sensor 20 6 are relative positions in the digital camera. Sheep, and 'Tian's children's alums refer to Figure 4 and Figure 5. The system shown in Figure 2 can help us to analyze the light source, such as the intensity of the light source and spectral analysis, which is very helpful for 1 exposure (ΑΕ) and automatic white balance (AWB). The third figure is a schematic diagram of the detection and imaging process of the digital image capturing system of FIG. 2 . The lens, aperture and shutter 3〇4 are used to capture the scene 32〇, f this lens, aperture and shutter 3 04 as the actual image of the camera 2〇4 in Fig. 2. Light: The original 3 3 0 and 5 shots to the scene 320 to be photographed and the uniform gray 3 0 2, and the uniform gray object 3 〇 2 is used as the embodiment in Fig. 2 . After the light sensor 306 receives the reflected light from the light source 33〇, the light source can be analyzed in the analyzing device 308: the ignite (average value) 1, the green-red ratio (equal to the average green value / t Strong, green and blue than gB (equal to the average green value / average g sentence red value) gR, F. Phoenix value and the source of the flashing frequency of the heart, the light source scanning frequency F round out to control the exposure of the scene , the exposure time must be the light source:: Photo: The light time must match the intensity! Value (system assembly slave integer and exposure and reasonable exposure time to calculate the formula or build a control ^). The intensity I value can be furthermore. It can also be determined by the uniform gray matter 3 〇 2 exposure uniformity that the exposure time and the light source flicker frequency F are the integer multiples of the light source blinking period. +Light time is not the light source
第7頁 1264611Page 7 1264611
五、發明說明（5) ::週：F之整數倍時’―個單色單亮度之物體會被拍為 U ^、斜條紋，而—般光源閃爍頻率與交流電的供電有 ^ : °又—預設值而實際拍攝時閃爍頻率會在預設值附 :f :的偏I，因此’可於偵測到均勻度不佳時，稍做 :Ί。纟實際操作時’光源閃爍頻率F可先預設為1 20 Η Z ’根據均勻方耷物]〇 9 9 π j ^ U Z疋否已均勻曝光，再對光源閃爍 二二 你调，當光源閃爍頻率F微調至正確值時，晝面會 均勻曝光。 一胃 二紅比gR及綠監比gB輪出到影像處理裝置3 1 0做自 白平衡’將得到的影像所有的紅色值^都以下式轉換為 ”斤的紅色值R、藍色值B #以下式轉換為新的藍色值b，： R’ = gR 氺 R ; B’ = gB 氺 B ; 亚將新的紅色值R’及新的藍色值β，以及未經改變的綠 色值G輸出到下一級的影像處理3 12(這部份並未顯示在第？ 第4圖及第5圖分別說明第2圖中己知物體及光感應器 在數位相機中相對位置的二個實施例。 如第4圖所示，在數位取像系統中除了原本用於拍攝 景物的光感應器外，可再加一個額外的光感應器，同時去 接收光源，這顆新加入的光感應器為較廉價或尺寸較小的 感光器。第4圖為此架構簡單之示意圖，如圖所示，己知 物體4 0 2設計斜放在數位相機4 〇 〇的機殼正面内測，在其它 實施例中，己知物體402可加在機構中任何地方，只要能匕V. Invention description (5) :: Week: When the integer multiple of F is '-a single-color single-bright object will be photographed as U ^, diagonal stripes, and the light source flashing frequency and AC power supply ^ : ° - Preset value and the actual flashing frequency will be at the preset value with f: the offset I, so 'can be detected when the uniformity is not good, slightly: Ί.纟In actual operation, the 'light source flashing frequency F can be preset to 1 20 Η Z ' according to the uniform square object] 〇 9 9 π j ^ UZ 疋 No uniform exposure, then the light source flashes two or two, when the light source flashes When the frequency F is fine-tuned to the correct value, the face will be evenly exposed. One stomach two red than gR and green monitor than gB round to image processing device 3 1 0 to do confession balance 'will get all the red values of the image ^ are converted into the following formula: "red red value R, blue value B # The following equation is converted to the new blue value b,: R' = gR 氺R ; B' = gB 氺B ; the new red value R' and the new blue value β, and the unchanged green value G Output to the next level of image processing 3 12 (this part is not shown in the fourth Figure 4 and Figure 5 respectively illustrate two embodiments of the relative position of the object and the light sensor in the digital camera in Figure 2 As shown in Fig. 4, in the digital image capturing system, in addition to the light sensor originally used for photographing the scene, an additional light sensor can be added and the light source is received at the same time. The newly added light sensor is A cheaper or smaller size photoreceptor. Figure 4 shows a simple schematic of the architecture. As shown in the figure, it is known that the object 4 0 2 design is placed obliquely on the front of the casing of the digital camera 4 ,, in other implementations. In the example, it is known that the object 402 can be added anywhere in the mechanism, as long as it can
1264611 五、發明說明（6) 被光源照射到即可（甚 件，使光經反射或甘至可置於機構内，但加入光學元 上）。己知物體4 〇 2接 ％ +特性成功照射在已知物體 光學折射到新加入的$ =面的光線照射，再直接或是經過 中以虛線表示，在之、I成應器4 0 6内’光行進的方向在圖 打到己知物體4 〇 2折射要注意的是，必須設計好光線進來 4 0 6能適當接收與取产】光感應器4 0 6的路徑，使光感應器 反射此光源之刺激。相似的光源並且阻絕非己知物體4 0 2 除了以外加一顆伞# ,應恭同 '一時間接收取傻資判_ θ 口 知物體貢料的方式達成 抑才J丧收取像貝枓及已 成岸哭的方彳敌f r勺外，逖可以分時但用同一顆光 ΪΞ: ί 資料(以現實狀況考量，在極短的 寸日二卩又a又光源無蜒化），此時僅必須依時間旋轉或移 動感應器或以其他裝置，讓感應器可在不同時間内感應到 不同來源的光學資料。 “ 另外，除了上述方式外，再舉另一個可選擇的實施 ，，將已知物放置於鏡頭前方，再以機械方式依時間切換 ，否擋住拍攝景物，而使同一顆光感應器得到兩種資料，、 第5圖為此架構簡單之示意圖，如圖所示，已知物體5〇 2在 數位取像系統5 〇 〇的正前方，再以機械方式依時間切換是 否擋住拍攝景物52 0，而使數位取像系統5〇〇内的光感應器 5 0 6得到兩種資料。 光感應器可為電荷耦合元件（CCD)或者是互補金屬氧 化半導体（CMOS)元件。當光感應器為電荷耦合元件（CCD) 時，可在一顆電荷耦合元件（CCD)上切割成兩部份，以光1264611 V. INSTRUCTIONS (6) It can be illuminated by the light source (in some cases, the light can be reflected or sweetened into the mechanism, but added to the optical element). It is known that the object 4 〇2 is connected to the %+ characteristic and successfully illuminates the light of the known object to the newly added $= plane, and then directly or through the dotted line, in the I 'The direction of light travel in the figure hits the known object 4 〇 2 refraction Note that the light must be designed to enter and take the path of the light sensor 4 0 6 to make the light sensor reflect The stimulation of this light source. Similar light source and blocking non-known objects 4 0 2 In addition to adding an umbrella #, should be the same as 'a time to receive a foolish judgment _ θ mouth to know the object tribute to achieve a stagnation The enemy who has been crying on the shore is outside the scole, but you can use the same light in time: ί data (in terms of reality, in a very short day and two, and a light source is innocent), at this time It is only necessary to rotate or move the sensor or other devices in time to allow the sensor to sense optical data from different sources at different times. In addition, in addition to the above-mentioned methods, another alternative implementation is to place the known object in front of the lens and mechanically switch according to time, without blocking the shooting scene, and the same light sensor is obtained in two ways. The data, Figure 5 is a simple schematic diagram of the architecture. As shown in the figure, it is known that the object 5〇2 is directly in front of the digital image capturing system 5 ,, and then mechanically switches according to time to block the shooting scene 52 0, The optical sensor 506 in the digital imaging system 5 得到 obtains two kinds of data. The light sensor can be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) device. When the light sensor is a charge When coupling a component (CCD), it can be cut into two parts on a charge coupled device (CCD) to light
0790-9197TWF(nl) ;PT-〇2〇〇i ；ELLEN.ptd" —第 9 頁 " — 1264611 五、發明說明（7) 學的方式讓它們各別感測到不同的刺激，一部份感測已知 物曝光的結果，另一部份則感測鏡頭進來的影像資料，以 達成同時接收取像資料及已知物體資料的目的，此種方法 的架構大致如第4圖和第5圖所示。 綜上所述，本發明之數位取像系統的偵測方法及實現 此方法的數位取像系統，其利用光感應器接收光源照射該 數位取像系統中已知物體所產生的資料以偵測光源特性， 且直接應用此資料調整影像處理方式，達到滅少影像失 真、增加影像品質以及大幅降低系統建置成本的目的。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍内，當可作些許之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者為準。0790-9197TWF(nl) ;PT-〇2〇〇i ;ELLEN.ptd" —page 9" — 1264611 V. INSTRUCTIONS (7) The way of learning allows them to sense different stimuli, one One part senses the result of exposure of the known object, and the other part senses the image data coming in from the lens to achieve the purpose of simultaneously receiving the image data and the known object data. The structure of the method is roughly as shown in Fig. 4 and Figure 5 shows. In summary, the method for detecting a digital image capturing system of the present invention and the digital image capturing system for implementing the same use the light sensor to receive light source to illuminate the data generated by the known object in the digital image capturing system to detect The characteristics of the light source, and directly apply this data to adjust the image processing mode, to achieve less image distortion, increase image quality and greatly reduce the cost of system construction. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.
0790-9197TWF(nl);PT-02001;ELLEN.ptd 第10頁 1264611 圖式簡單說明 第1圖係表示本發明之數位取像系統的偵測方法之流 程圖。 第2圖係表示實現第1圖之方法的數位取像系統範例的 示意圖。 第3圖係表示第2圖的數位取像系統進行偵測及取像流 程之範例的示意圖。 第4圖係表示第2圖中己知物體及光感應器在數位相機 中相對位置範例的示意圖。 器在數位相機 第5圖係表示第2圖中己知物體及光感應 中相對位置另一範例的示意圖。 符號說明： 2 0 0、5 0 0〜數位取像系統； 20 2、40 2、50 2〜己知物體； 2 0 4〜攝影裝置； 20 6、3 0 6、40 6、5 0 6 〜光感應器； 2 0 8、3 0 8〜分析裝置； 2 1 0、3 1 0〜影像處理裝置； 220、320、520 〜景物； 230、330〜光源； 302〜均勻灰色物； 3 0 4〜鏡頭、光圈及快門； 3 1 2〜其它影像處理； 4 0 0〜數位相機；0790-9197TWF(nl); PT-02001; ELLEN.ptd Page 10 1264611 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing a method of detecting a digital imaging system of the present invention. Fig. 2 is a view showing an example of a digital image capturing system which realizes the method of Fig. 1. Fig. 3 is a view showing an example of the detection and imaging process of the digital image capturing system of Fig. 2. Fig. 4 is a view showing an example of the relative position of an object and a light sensor in a digital camera in Fig. 2. In the digital camera, Fig. 5 is a schematic view showing another example of the relative position of the object and the light sensing in Fig. 2. DESCRIPTION OF SYMBOLS: 2 0 0, 5 0 0~ digital imaging system; 20 2, 40 2, 50 2~ Known objects; 2 0 4~Photographing device; 20 6、3 0 6、40 6、5 0 6 〜 Light sensor; 2 0 8 , 3 0 8 ~ analysis device; 2 1 0, 3 1 0~ image processing device; 220, 320, 520 ~ scene; 230, 330 ~ light source; 302 ~ uniform gray object; 3 0 4 ~ lens, aperture and shutter; 3 1 2 ~ other image processing; 4 0 0 ~ digital camera;
Ii〜拍攝影像；Ii~ shooting images;
1264611 圖式簡單說明 I。〜影像資料； I〜強度； gR〜綠紅比； gB〜綠藍比； F〜光源閃燦頻率。 _画1 第12頁 0790-9197TWF(nl);PT-02001;ELLEN.ptd1264611 Simple description of the schema I. ~ image data; I ~ intensity; gR ~ green red ratio; gB ~ green blue ratio; F ~ light source flashing frequency. _画1 Page 12 0790-9197TWF(nl);PT-02001;ELLEN.ptd