201023168 四、指定代表圖： (一) 本案指定代表圖為：第（一 B )囷。 (二) 本代表圖之元件符號簡單說明： 2 物件（十字形圖案） 4 物件（圓形圖案） 100A-B 影像（第一實施例） ❹五、本案若有化學式時’請揭示最能顯示發明特徵的化與气 六、發明說明： 【發明所屬之技術領域】 本發明係有關影像顯示，特別是關於一種將觀看者的 主意力導引至影像中的關注區域（area of interest)之方 法’用以提高觀看者對於所感知影像的品質及觀看者的偏 ❹ 好。 【先前技術】 影像顯示器為一種呈現視覺訊息的輸出裝置，其已成 為現今電子裝置中不可或缺的構成元件。由於電子裝置（特 別是可攜式或手持式裝置）的有限處理能力，或者因其為 了節省電源而使用低功率背光，此可能會減低影像顯示的 201023168 品質。在這些限制之下，影像通常會以一種選擇性的方式 來顯示，使得重要的視覺訊息以正常品質來顯示，而其他 的視覺訊息則以低品質來顯示。然而，由於觀看者的注意 力一般會隨意地投注於各個區域，因而造成整體影像的感 知僅能達到中等品質。 由於網頁的瀏覽已成為日常生活的一環，因此線上廣 Φ 告的數量有逐漸增加的趨勢，以吸引更多的顧客。然而， 一些線上廣告（例如彈出式（pop-up)廣告）往往造成使 用者的困擾而非吸引，甚至阻擋了相當的顯示區域。因此， 一般使用者會特意忽視甚至關閉這些廣告，而非受其吸引。 由於傳統影像顯示器無法導引觀看者的注意力，因此 需要一種將觀看者的注意力導引至關注區域的自動機制， ❿ 用以提高影像的感知品質或促進線上的廣告。 【發明内容】 鑑於上述，本發明的目的之一在於提供一種將觀看者 的注意力導引至關注區域的方法，用以提高影像的感知品 質或促進線上的廣告效果。 201023168 根據本發明第一實施例，首先提供一具有關注區域 (AOI)的影像。短暫顯示關注區域。接下來，正常顯示 整個完整的影像。其中，短暫顯示影像中的關注區域（Α ΟI) 可以由提示物件（cue)所取代。藉此，觀看者的眼睛將 以潛意識方式不由自主地被導引至關注區域。 根據本發明第二實施例，重複第一實施例中的短暫顯 φ 示步驟及正常顯示步驟。藉此，觀看者的眼睛將以潛意識 方式不由自主地被持續導引至關注區域，且受到單純曝光 效應（mere exposure effect)的影響。 根據本發明第三實施例，短暫顯示關注區域，並正常 顯示整個完整的影像。接下來，短暫顯示降低 (diminished)關注區域（AOI)，並正常顯示整個完整的 參影像。藉此，觀看者的眼睛將以潛意識方式不由自主地被 持續導引至關注區域，且無意識地感知到閃爍的關注區域 (AOI)。 【實施方式】 第一 A圖顯示本發明第一實施例的影像顯示方法之流 程圖，其係用以將觀看者的眼睛或注意力導引至影像中的 201023168 關注區域（area of interest, AOI )。第一 B圖顯示根據第 一 A圖之操作而依序顯示的例示影像。在本說明書中，” 影像”一詞可以指靜態影像（一般稱為圖片）或者動態影像 (一般稱為影片）；”關注區域（A0I )，，可以是一物件 (object)、圖樣（pattern)或區域。例如，於第一 b圖 中’關注區域（A0I)為影像的上半部，其包含物件2，在 本例示中為一個十字圖案。影像中的非關注區域 參 （ηοη-ΑΟΙ，亦gp，例示影像的下半部）貝,|包含物件4，， 在本例示中為一個圓形圖案。 於步驟10’首先提供具降低（diminished)非關注 區域（ηοη-ΑΟΙ)的影像1〇〇A。一般來說，該非關注區 域之降低可藉由降低影像特性（例如亮度或顏色）來達成， 或者降低其對比度（contrast)。例如，調整非關注區域的 ❿亮度（luminance )分佈（亦即，hist〇gram )，使得亮戒 分對暗成分的比例大大降低。於一較佳且較極度的實施例 中’非關注區域的所有灰階都被降為零。換句話說，非關 注區域完全從影像100A中予以删除。於㈣η中，短暫 地顯示影像Η)〇Αβ在本實施例中，影像ι〇〇Α的顯示時 間可持續（但不限定於）數十或數百毫秒（ms)。一般來 說，本說月曰所述之短暫顯示係指其顯示持續時間很短而 使得影像（例如100A)不會被觀看者的意識所察覺 201023168 (recognize)，卻能被觀看者無意識地感知（perceive)。 短暫顯示的適當持續時間通常會依所顯示内容及顯示方式 而定。詳而言之，以空間域（spatial domain)而言，適 當的短暫顯示持續時間會取決於物件或圖樣於影像中的配 置；以時間域（temporal domain)而言，適當的短暫顯 示持續時間會取決於顯示裝置的更新（refresh)速率或影 格（frame)速率。接下來，於步驟12，正常（normal) ❹ 顯示整個完整影像100B，其顯示持續時間較步驟11的顯 示持續時間來得長。一般來說，正常顯示的持續時間必須 足夠長，例如（但不限定於）一或多秒，使得影像100B 可以被觀看者的意識所察覺（recognize)。 藉由突然但無意識地感知影像100A之關注區域 (AOI )，觀看者的眼睛將以潛意識（subliminal)方式不 ❹ 由自主地（involuntarily)被導引至關注區域（亦即，例 示影像的上半部）。在較佳實施例中，由於非關注區域 (ηοη-ΑΟΙ)完全從影像100A中被刪除，因此影像100A 之關注區域（ΑΟΙ )係作為一突然且迅速的起始物 (onset)，用以吸引眼睛及引起注意。較之於其他實施例 的未完全降低（diminished )之非關注區域（non-AOI)， 本較佳實施例可引起更多的注意。關於潛意識現象可參閱 Manon Mulckhuyse 等人揭露於 Visual Cognition 201023168 (2007)，15，779-788 之“Grabbing attention without knowing: Automatic capture of attention by subliminal spatial cues”。 第一 C圖顯示第一 B圖之替代實施例。於第一 c圖之 影像101A中，以提示（cue)物件3來代替關注區域（A0I) 的物件2，以進行短暫顯示。提示物件3 (在本例中為三 ❿角形物件）為一個圖樣或物件，其異於關注區域（AOI) 物件（例如十字形物件2)。接下來，正常顯示整個完整影 像101B。第一 C圖的效果類似於第一 b圖，可藉由突然 但無意識地感知影像101A之提示物件，觀看者的眼睛將 以潛意識（subliminal)方式不由自主地（involuntarily ) 被導引至關注區域（亦即，例示影像的上半部）β ❷ 第一 Α圖至第一 C圖所示的實施例可應用於各種場 合。例如，實施例可應用於資源受限的電子裝置中，用以 將觀看者的注意焦點從低品質影像區移開。藉此，觀看者 將不會專注於低品質影像區，使得整體影像的感知品質得 以提高。在另一例子中，實施例可用以引導觀看者的注意 焦點至線上廣告’甚至用以顯示出廣告本身，讓使用者無 意識地感知（perceive)。 201023168 第二A圖顯示本發明第二實施例的影像顯示方法之流 程圖，其係用以將觀看者的眼睛或注意力導引至影像中的 關注區域（AOI)。第二B圖顯示根據第二A圖之操作而依 序顯示的例示影像。 於步驟20，首先提供具降低（diminished)非關注 區域（ηοη-ΑΟΙ)的影像200A。在本實施例中，該非關 ❹ 注區域之降低可藉由降低其對比度（contrast)來達成； 於一較佳實施例中，非關注區域完全從影像200A中予以 刪除。於步驟21中，短暫地顯示影像200A。接下來，於 步驟22，正常（normai)顯示整個完整影像200B，其顯 示持續時間較步驟21的顯示持續時間來得長。再者，於 本實施例中’重複執行步驟21及22 —或多次（第二B圖 之例子為重複二次）。 ❹ 藉此’觀看者的眼睛不但得以潛意識（subliminal) 方式不由自主地（inv〇lUntarily)被導引至關注區域（亦 即’例示影像的上半部），而且還會持續地被導引至相同的 關〉主區域。藉由持續地吸引觀看者的注意力至關注區域並 延長该區域的接觸曝光時間（exposure time)’本實施例 即具有單純曝光效應 (mere exposure effect)，其藉由較 長間的曝光所造成的熟悉度而造成觀看者對於關注區域 201023168 產生偏好。換句話說，如果觀看者看某人的時間愈久，則 對該人愈產生愉悅感受° 第二C圖顯示第二B圖之替代實施例。於第二c圖之 影像201A中，以提示（cue)物件3來代替關注區域（A〇I) 的物件2 ’以進行短暫顯示。接下來，正常顯示整個完整 影像201B。再者，於本實施例中，重複執行步驟21及 ❹ 22 —或多次（第二C圖之例子為重複二次 第二A圖至第二C圖所示的實施例可應用於各種場 合’如前所述。再者，本實施例因具有單純曝光致應（mere exposure effect)而可特別應用於線上廣告。 第三A圖顯示本發明第三實施例的影像顯示方法之流 ❹程圖，其係用以將觀看者的眼睛或注意力導引至影像中的 關注區域（AOI)。第三b圖顯示根據第三A.圖之操作而依 序顯示的例示影像。 於步驟30，首先提供具降低（diminished)非關注 區域（ηοη-ΑΟΙ)的影像3〇〇A。在本實施例中，該祚關 注區域之降低可藉由降低其對比度（c〇ntrast)來達成； 於一較佳實施例中，非關注區域完全從影像3〇〇A中予以 201023168 刪除。於步驟31中，短暫地顯示影像300A。接下來，於 步驟32，正常（normal)顯示整個完整影像300B，其顯 示持續時間較步驟31的顯示持續時間來得長。於本實施 例中，更提供另一具降低（diminished )非關注區域 (ηοη-ΑΟΙ)的影像300C，其關注區域（AOI)之對比度 被降低（或完全删除該關注區域）。於步驟33中，短暫地 顯示影像300C。其中，對比度降低（或刪除）之關注區 0 域（ΑΟΙ)(亦即，十字形物件2Α)，其對比度介於正常關 注區域（ΑΟΙ)(十字形物件2)與降低（diminished)非 關注區域（ηοη-ΑΟΙ)之間。一般來說，降低（diminished ) 非關注區域（ηοη-ΑΟΙ)(例如十字形物件2A)之影像特 性（例如對比度、亮1度或顏色）係介於正常關注區域（ΑΟΙ) (十字形物件2)與降低（diminished )非關注區域 (ηοη-ΑΟΙ)之間。接下來，於步驟34，正常（normal) ❹ 顯示整個完整影像300D。步驟31至34可重複執行一或 多次。 藉此，觀看者的眼睛不但得以潛意識（subliminal) 方式不由自主地（involuntarily)被持續導引至關注區域 (亦即，例示影像的上半部），而且還會無意識地感知 (perceive )到閃爍（glitter 或 flash )。 11 201023168 第三C圖顯示第三b圖之替代實施例。於第三c圖之 影像301A中，以提示（cue)物件3來代替關注區域（A〇I) 的物件2，以進行短暫顯示。接下來，正常顯示整個完整 影像301B。更提供另—具降低（diminished)非關注區 域（ηοη-ΑΟΙ)及對比度降低之提示物件3A的影像 301C’亚短暫顯示影像3〇lc。接下來，正常顯示整個完 整影像301D。 以上所述僅為本發明之較佳實施例而已，並非用以限 定本發明之申請專利範圍；凡其它未脫離發明所揭示之精 神下所完成之等效改變或修飾，均應包含在下述之申請專 利範圍内。 【圖式簡單說明】 φ 第- A _示本發明第—實施例的影像顯示方法之流程 圖’其係心將觀看者如意力導引至影像中賴注^域 (ΑΟΙ)。 顯示的例示影 第- Β圖顯示根據第一 a圖之操作而依庠 像。 第-C圖顯示第一b圖之替代實施例。 第二A圖顯示本發明第二實施例的影像顯示方法之流程 12 201023168 圖，其係用以將觀看者的注意力導引至影像中的關注區域 (AOI)。 第二B圖顯示根據第二A圖之操作而依序顯示的例示影 像。 第二C圖顯示第二B圖之替代實施例。 第三A圖顯示本發明第三實施例的影像顯示方法之流程 圖，其係用以將觀看者的注意力導引至影像中的關注區域 ❿（AOI)。 第三B圖顯示根據第三A圖之操作而依序顯示的例示影 像。 第三C圖顯示第三B圖之替代實施例。 | ! 【主要元件符號說明】 2 物件（十字形圖案） 3 提示物件（三角形圖案） 4 物件（圓形圖案） 10-12 第一實施例的步驟 20-22 第二實施例的步驟 30-34 第三實施例的步驟 100A-B 影像（第一實施例） 101A-B 影像（第一實施例） 200A-B 影像（第二實施例） 13 201023168 201A-B 影像（第二實施例） 300A-D 影像（第三實施例） 301A-D 影像（第三實施例）201023168 IV. Designated representative map: (1) The representative representative of the case is: (1 B)囷. (2) A brief description of the symbol of the representative figure: 2 Object (cross pattern) 4 Object (circular pattern) 100A-B image (first embodiment) ❹5. If there is a chemical formula in this case, please reveal the best display. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to image display, and more particularly to a method for guiding a viewer's intentional force to an area of interest in an image. 'To improve the viewer's perception of the quality of the perceived image and the viewer's bias. [Prior Art] An image display is an output device that presents a visual message, which has become an indispensable component in today's electronic devices. This may reduce the 201023168 quality of the image display due to the limited processing power of the electronic device (especially portable or handheld devices) or the use of low power backlights to save power. Under these limitations, images are usually displayed in a selective manner, allowing important visual messages to be displayed in normal quality, while other visual messages are displayed in low quality. However, since the viewer's attention is generally arbitrarily bet on each area, the overall image is only perceived to be of medium quality. Since the browsing of web pages has become a part of daily life, the number of online advertisements has gradually increased to attract more customers. However, some online advertisements (e.g., pop-up advertisements) often cause confusion to the user rather than attraction, and even block a relatively large display area. Therefore, the average user will specifically ignore or even close these ads, rather than being attracted to them. Since conventional image displays are unable to guide the viewer's attention, an automatic mechanism for directing the viewer's attention to the area of interest is needed to improve the perceived quality of the image or to promote online advertising. SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a method of guiding a viewer's attention to a region of interest for improving the perceived quality of an image or promoting an advertising effect on a line. 201023168 According to a first embodiment of the present invention, an image having an area of interest (AOI) is first provided. Briefly display the area of interest. Next, the entire complete image is displayed normally. Among them, the area of interest (Α ΟI) in the short-term display image can be replaced by a cue. Thereby, the viewer's eyes will be involuntarily guided to the area of interest in a subconscious manner. According to the second embodiment of the present invention, the short display step and the normal display step in the first embodiment are repeated. Thereby, the viewer's eyes are involuntarily guided to the region of interest in a subconscious manner and are affected by the mere exposure effect. According to the third embodiment of the present invention, the region of interest is briefly displayed, and the entire complete image is normally displayed. Next, the diminished area of interest (AOI) is briefly displayed and the entire complete parametric image is displayed normally. Thereby, the viewer's eyes will be involuntarily guided to the region of interest in a subconscious manner, and the blinking region of interest (AOI) is unconsciously perceived. [Embodiment] FIG. 1A is a flowchart showing an image display method according to a first embodiment of the present invention, which is used to guide a viewer's eyes or attention to an 201023168 area of interest (AOA). ). The first B diagram shows an exemplary image sequentially displayed in accordance with the operation of Fig. A. In the present specification, the term "image" may refer to a still image (generally referred to as a picture) or a moving image (generally referred to as a movie); an area of interest (A0I), which may be an object or a pattern. Or region. For example, in the first b diagram, the 'region of interest (A0I) is the upper half of the image, which contains the object 2, which in this illustration is a cross pattern. The non-interest region in the image refers to (ηοη-ΑΟΙ, Also gp, exemplifying the lower half of the image), containing the object 4, is a circular pattern in this illustration. First, an image with a diminished non-interesting region (ηοη-ΑΟΙ) is provided in step 10'. 〇〇A. In general, the reduction of the non-interest area can be achieved by reducing the image characteristics (such as brightness or color), or reducing its contrast. For example, adjusting the luminance distribution of the non-interest area ( That is, hist〇gram), the ratio of the bright ring to the dark component is greatly reduced. In a preferred and more extreme embodiment, all the gray levels of the non-region of interest are reduced to zero. In other words, The non-interest area is completely deleted from the image 100A. In (4) η, the image is displayed briefly Η) 〇Αβ In this embodiment, the display time of the image ι〇〇Α can be sustained (but not limited to) tens or hundreds Milliseconds (ms). In general, the short display described in this booklet means that its display duration is short so that the image (eg 100A) will not be perceived by the viewer's consciousness 201023168 (recognize), but can be The viewer is unconsciously perceive. The appropriate duration of the short display usually depends on what is displayed and how it is displayed. In detail, in the case of a spatial domain, the appropriate short duration of display will depend on the spatial domain. The configuration of the object or pattern in the image; in terms of the temporal domain, the appropriate short display duration will depend on the refresh rate or frame rate of the display device. Next, in step 12 , normal ❹ The entire complete image 100B is displayed, and its display duration is longer than the display duration of step 11. In general, the duration of the normal display It must be long enough, such as (but not limited to) one or more seconds, so that image 100B can be recognized by the viewer's consciousness. By suddenly but unconsciously perceiving the region of interest (AOI) of image 100A, the viewer's The eye will be involuntarily guided to the region of interest (i.e., the upper half of the image) in a subliminal manner. In the preferred embodiment, due to the non-interest region (ηοη-ΑΟΙ) It is completely removed from the image 100A, so the region of interest (ΑΟΙ) of the image 100A serves as a sudden and rapid onset for attracting eyes and attracting attention. The preferred embodiment can draw more attention than the diminished non-AOI of other embodiments. For the subconscious phenomenon, see "Grabbing attention without knowing: Automatic capture of attention by subliminal spatial cues" by Manon Mulckhuyse et al., Visual Cognition 201023168 (2007), 15, 779-788. The first C diagram shows an alternative embodiment of the first B diagram. In the image 101A of the first c-picture, the object 2 of the region of interest (A0I) is replaced with a cue object 3 for short display. The prompt object 3 (in this case, a three-cornered object) is a pattern or object that is different from an area of interest (AOI) object (e.g., a cross-shaped object 2). Next, the entire full image 101B is normally displayed. The effect of the first C-picture is similar to that of the first b-picture. By suddenly and unconsciously perceiving the cue object of the image 101A, the viewer's eyes will be involuntarily guided to the region of interest in a subliminal manner ( That is, the upper half of the illustrated image) β ❷ The first to the first embodiment shown in FIG. 1 can be applied to various occasions. For example, embodiments can be applied to resource-constrained electronic devices to remove the viewer's attentional focus from the low-quality image area. As a result, the viewer will not focus on the low-quality image area, so that the perceived quality of the overall image is improved. In another example, an embodiment can be used to guide the viewer's attention to the online advertisement' even to display the advertisement itself, leaving the user unconsciously perceive. 201023168 The second A diagram shows a flow chart of the image display method of the second embodiment of the present invention for guiding the viewer's eyes or attention to an area of interest (AOI) in the image. The second B-picture shows an exemplary image sequentially displayed in accordance with the operation of the second A-picture. In step 20, an image 200A having a diminished non-interest area (ηοη-ΑΟΙ) is first provided. In this embodiment, the reduction in the non-closed area can be achieved by reducing its contrast; in a preferred embodiment, the non-interest area is completely removed from image 200A. In step 21, the image 200A is briefly displayed. Next, in step 22, the entire complete image 200B is displayed in a normal manner (normai), and its display duration is longer than the display duration of step 21. Further, in the present embodiment, steps 21 and 22 are repeatedly performed - or multiple times (the example of the second B picture is repeated twice).借此 By this, the viewer's eyes are not only subliminal, but also indirectly (in the upper part of the exemplified image), and are continuously guided to the same The main area of Guan. By continuously attracting the viewer's attention to the area of interest and extending the exposure time of the area', this embodiment has a mere exposure effect, which is caused by a longer exposure. The familiarity caused viewers to have a preference for the area of interest 201023168. In other words, if the viewer sees someone for a longer period of time, the person feels more pleasant about the person. The second C-picture shows an alternative embodiment of the second B-picture. In the image 201A of the second c-picture, the object 2' of the region of interest (A〇I) is replaced with a cue object 3 for short display. Next, the entire complete image 201B is normally displayed. Furthermore, in the embodiment, the steps 21 and 22 are repeatedly performed - or multiple times (the example of the second C diagram is a repeating second embodiment of the second A diagram to the second C diagram, which can be applied to various occasions. 'As mentioned above. Moreover, this embodiment can be particularly applied to online advertisements because of having a mere exposure effect. The third A diagram shows the flow of the image display method according to the third embodiment of the present invention. The figure is used to guide the viewer's eyes or attention to an area of interest (AOI) in the image. The third b-picture shows an exemplary image sequentially displayed according to the operation of the third A. figure. First, an image 3〇〇A having a diminished non-interesting region (ηοη-ΑΟΙ) is provided. In this embodiment, the reduction of the region of interest of the 可 can be achieved by reducing the contrast (c〇ntrast); In a preferred embodiment, the non-interest area is completely deleted from the image 3A. 201023168. In step 31, the image 300A is briefly displayed. Next, in step 32, the entire complete image 300B is normally displayed. Its display duration is longer than step 3 The display duration of 1 is long. In this embodiment, another image 300C of the diminished non-interest area (ηοη-ΑΟΙ) is provided, and the contrast of the area of interest (AOI) is lowered (or the deletion is completely deleted). Focus area). In step 33, the image 300C is briefly displayed, wherein the contrast area 0 field (ΑΟΙ) (ie, the cross object 2Α) whose contrast is lowered (or deleted) has a contrast in the normal attention area (ΑΟΙ Between (cross-shaped object 2) and diminished non-interesting area (ηοη-ΑΟΙ). In general, the image characteristics of the non-interested area (ηοη-ΑΟΙ) (for example, cross-shaped object 2A) are diminished ( For example, contrast, brightness 1 degree or color) is between the normal area of interest (ΑΟΙ) (cross object 2) and the diminished non-attention area (ηοη-ΑΟΙ). Next, in step 34, normal (normal ❹ Display the entire complete image 300D. Steps 31 to 34 can be repeated one or more times. Thereby, the viewer's eyes are not only involuntarily held involuntarily. Continued guidance to the region of interest (ie, exemplifying the upper half of the image), and will also unconsciously perceive to flash (flash or flash). 11 201023168 Third C shows an alternative embodiment of the third b In the image 301A of the third c-picture, the object 2 of the region of interest (A〇I) is replaced with a cue object 3 for short-term display. Next, the entire complete image 301B is normally displayed. Further, an image 301C' of the prompting object 3A having a diminished non-interest area (ηοη-ΑΟΙ) and a contrast reduction is provided to briefly display the image 3〇lc. Next, the entire complete image 301D is normally displayed. The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; all other equivalent changes or modifications which are not departing from the spirit of the invention should be included in the following Within the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS φ - A - shows the flow of the image display method of the first embodiment of the present invention. The center of the drawing guides the viewer to the image in the image (ΑΟΙ). The exemplified image of the display - the 显示 image shows the image according to the operation of the first a picture. The Figure-C shows an alternative embodiment of the first b-picture. Figure 2A shows the flow of the image display method of the second embodiment of the present invention. 12 201023168 The figure is used to guide the viewer's attention to an area of interest (AOI) in the image. The second B-picture shows an exemplary image sequentially displayed in accordance with the operation of the second A-picture. The second C diagram shows an alternative embodiment of the second B diagram. Figure 3A is a flow chart showing the image display method of the third embodiment of the present invention for guiding the viewer's attention to the area of interest (AOI) in the image. The third B diagram shows an exemplary image sequentially displayed in accordance with the operation of the third A diagram. The third C diagram shows an alternative embodiment of the third B diagram. | [Major component symbol description] 2 Object (cross pattern) 3 Prompt object (triangular pattern) 4 Object (circular pattern) 10-12 Step 20-22 of the first embodiment Steps 30-34 of the second embodiment Steps 100A-B of the third embodiment (first embodiment) 101A-B image (first embodiment) 200A-B image (second embodiment) 13 201023168 201A-B image (second embodiment) 300A- D image (third embodiment) 301A-D image (third embodiment)