JPH02106734A - Picture composing device - Google Patents
Picture composing deviceInfo
- Publication number
- JPH02106734A JPH02106734A JP63258375A JP25837588A JPH02106734A JP H02106734 A JPH02106734 A JP H02106734A JP 63258375 A JP63258375 A JP 63258375A JP 25837588 A JP25837588 A JP 25837588A JP H02106734 A JPH02106734 A JP H02106734A
- Authority
- JP
- Japan
- Prior art keywords
- picture
- image
- mask
- smoothing
- memory
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009499 grossing Methods 0.000 claims abstract description 30
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 4
- 238000003706 image smoothing Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 abstract description 19
- 230000004075 alteration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 206010052143 Ocular discomfort Diseases 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Light Sources And Details Of Projection-Printing Devices (AREA)
- Editing Of Facsimile Originals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、濃淡の画累からなる複数の画像をマスク画像
の使用により合成する画像合成装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image synthesis device that synthesizes a plurality of images consisting of a gradation of images by using a mask image.
（従来技術）
１つの画像に他の画像をはめ込み合成する際、マスク画
像を用いて画像をはめ込む領域を指定する方法が従来よ
り行われている。この場合、２つの画像の境界で急激な
濃度差があると視覚的に違和感が生じてしまうので、こ
の違和感を緩和するため、２つの画像の境界付近で境界
から−の距離に応じた比率で２つの画像の画累値の混合
演算を行う手法、あるいは、２つの画像を単純にはめ込
み合成した後に境界付近のみ適当な平滑化フィルタで画
像をぼかす手法などの手法が取られていた。(Prior Art) When synthesizing one image by fitting it into another image, a method has conventionally been used in which a mask image is used to designate an area in which the image is to be fitted. In this case, if there is a sudden difference in density at the boundary between the two images, it will give a visual discomfort, so in order to alleviate this discomfort, the ratio near the boundary between the two images is adjusted according to the - distance from the boundary. Techniques that have been used include performing a mixing operation on the cumulative values of two images, or simply merging the two images together and then blurring the image using an appropriate smoothing filter only near the boundary.
（発明が解決しようとする課題）
ところが前者の手法では、境界からの距離を計算するの
に時間がかかる、距離に応じた比率では境界での急黴な
濃度差を十分には抑えられない、などの欠点があり、後
者の手法では、境界付近で原画像の解像度が失われてし
まう、境界付近のみを検出して平滑化するのが面倒、カ
ラー画像の場合Ｒ，Ｇ、、Ｂ各面に対して平滑化する必
要があり、処理に時間がかか、るなどの欠点があった。(Problems to be solved by the invention) However, with the former method, it takes time to calculate the distance from the boundary, and the ratio according to the distance cannot sufficiently suppress the sharp concentration difference at the boundary. In the latter method, the resolution of the original image is lost near the boundaries, it is troublesome to detect and smooth only the areas near the boundaries, and in the case of color images, each surface of R, G, B However, there are disadvantages such as the need for smoothing, which takes a long time to process.
本発明はこれらの従来技術の欠点を解消し、マスク画像
゛を用いて企つの画像を合成する際に境界で生じる違和
感を簡単な処理で高速に除去し、高画質を保つ画像合成
装置を提供することを目的とする。The present invention eliminates the drawbacks of these conventional techniques and provides an image compositing device that maintains high image quality by quickly removing the unnatural feeling that occurs at the boundary through simple processing when composing a desired image using a mask image. The purpose is to
（課題を解決するための手段）
本発明の画像合成装置は、第１図に示すように、第１お
よび第２の画像を合成する際の各画像の位置すべき領域
を指定するマスク画像に対して、平滑化処理を施すマス
ク画像平滑化手段１と、この平滑化処理後のマスク画像
の値により第１および第２の画像の比率混合演算を行い
合成画像を出力する混合演算手段２とを備えている。(Means for Solving the Problems) As shown in FIG. 1, the image synthesis device of the present invention uses a mask image that specifies the area in which each image should be located when synthesizing the first and second images. On the other hand, a mask image smoothing means 1 that performs smoothing processing, and a mixing calculation means 2 that performs a ratio mixing calculation of the first and second images based on the value of the mask image after this smoothing processing and outputs a composite image. It is equipped with
また、マスク画像平滑化手段１は、本発明の一態様によ
れば、平滑化の特性の異なる複数種の平滑化フィルタを
有し、これらの平滑化フィルタを選択的に使用できるよ
うに構成される。Further, according to one aspect of the present invention, the mask image smoothing means 1 is configured to have a plurality of types of smoothing filters having different smoothing characteristics, and to be able to selectively use these smoothing filters. Ru.
（作用）
本発明の画像合成装置の動作を第２図の動作フロー図に
示す。第１の画像と第２の画像を合成する際に合成後の
画像のどの領域にこれらの画像を配置す゛べきかを指示
するマスク画像を生成し、マスク画像平滑化手段１に入
力する（■）。マスク画像平滑化手段１は入力されたマ
スク画像を平滑化処理する（■）。混合演算手段２は入
力された第１の画像と第２の画像をマスク画像の平滑化
処理後の値により比率混合演算を行い合成画像を得る（
■）。なお、オペレータは適宜の表示手段により表示さ
れた合成画像をみて、満足のいくものであれば処理を終
了させ、不満であれば、例えば平滑化手段２の平滑化の
特性を変更する等して、処理を再実行する（■）。(Operation) The operation of the image synthesis apparatus of the present invention is shown in the operation flow diagram of FIG. When composing the first image and the second image, a mask image is generated that instructs in which area of the image after compositing these images should be placed, and is input to the mask image smoothing means 1 (■ ). The mask image smoothing means 1 smoothes the input mask image (■). The mixing calculation means 2 performs a ratio mixing calculation on the input first image and second image using the values after the smoothing process of the mask image to obtain a composite image (
■). Note that the operator looks at the composite image displayed on an appropriate display means, and if he/she is satisfied with the composite image, terminates the processing, and if dissatisfied with the composite image, for example, changes the smoothing characteristics of the smoothing means 2, etc. , re-execute the process (■).
（実施例の説明）
以下、添付図面に従って、本発明の実施例を詳細に説明
する。(Description of Embodiments) Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第３図は本実施例のブロック図で、この実施例の画像合
成装置は、背景画像（第１の画像）を記憶する背景画像
メモリ１１、はめ込み画像（第２の画像）を記憶するは
め込み画像メモリ１２、背景画像およびはめ込み画像と
同一の画像サイズからなる設定されたマスク画像を記憶
するマスク画像メモ１月３、マスク画像を平滑化処理す
るマスク画像平滑化装置１４、マスク画像平滑化装置１
４の出力する値により背景画像とはめ込み画像の比率混
合演算を行い合成画像を生成する混合演算装置１５、合
成画像を記憶する合成画像メモリ１６、および出力表示
装置１７を存している。FIG. 3 is a block diagram of the present embodiment. A memory 12, a mask image memo 3 for storing a set mask image having the same image size as the background image and the inset image, a mask image smoothing device 14 for smoothing the mask image, and a mask image smoothing device 1
4, a mixing calculation device 15 performs ratio mixing calculation of the background image and the inset image to generate a composite image, a composite image memory 16 stores the composite image, and an output display device 17 are provided.
第４図は不実施□例のマスク画像の一部分を示す説明図
で１つの格子が１つの画素を表わしている。FIG. 4 is an explanatory diagram showing a part of the mask image in the non-implemented example, and one grid represents one pixel.
図中、画素値１が合成時にはめ込み画像を表示する領域
で画素値０が合成時に背景画像を表示する領域であり、
太線が２つの画像の境界である。In the figure, a pixel value of 1 is an area where an inset image is displayed during compositing, a pixel value 0 is an area where a background image is displayed during compositing,
The thick line is the boundary between the two images.
マスク画像平滑化装置１４で例えば第５図に示すような
３×３平滑化フイルタで平滑化処理が行われる。即ち、
マスク画像平滑化装置１４ではマスク画像メモリ１３か
らある着目画素を中心とする３×３画素を読みだし、そ
の各画素に対し第５図に示すような３×３平滑化フイル
タの対応する重み値を乗じ、各乗算値の総和を求め、着
目画素のマスク画素値とする。このような処理をマスク
画像メモリ３内のマスク画像の全ての画素に対して行な
い、平滑化されたマスク画像を生成し、混合演算装置１
５へ供給する。第４図のマスク画像に対して、第５図の
平滑化フィルタにより処理すると第６図のような平滑化
マスク画像が生成される。The mask image smoothing device 14 performs smoothing processing using, for example, a 3×3 smoothing filter as shown in FIG. That is,
The mask image smoothing device 14 reads out 3×3 pixels centered on a certain pixel of interest from the mask image memory 13, and applies the corresponding weight value of a 3×3 smoothing filter as shown in FIG. 5 to each pixel. The total sum of each multiplication value is determined and is used as the mask pixel value of the pixel of interest. Such processing is performed on all pixels of the mask image in the mask image memory 3 to generate a smoothed mask image, which is then sent to the mixing arithmetic unit 1.
Supply to 5. When the mask image of FIG. 4 is processed by the smoothing filter of FIG. 5, a smoothed mask image as shown in FIG. 6 is generated.
混合演算装置１５では第６図に示すマスク画像の平滑化
後の画素値により次のような演算が行われ、合成画像の
画素値が求められる。The mixing calculation device 15 performs the following calculation using the smoothed pixel values of the mask image shown in FIG. 6 to obtain the pixel values of the composite image.
Ｖ、＝（１−Ｋ）＊ＶＩ、＋ＫｋＶＩ２ ・・・（
１）■ｏ二合成画像の画素値
■、１：背景画像の画素値
■１□：はめ込み画像の画素値
に：マスク画像の平滑後の画素値
例えば第６図に示すマスク画像の平滑化後の画素値Ｋが
１の場合、式（１）より■。” Ｖ ＋□となり合成画
像の画素値は、はめ込み画像の画素値と等しくなる。同
様にに＝Ｏの場合にはＶ。−ｖｌ、となり合成画像の画
素値ば、背景画像の画素値と等しくなる。また０＜Ｋ＜
１となる２つのｌｉ！ｉｉ像の境界付近では、合成画像
の画素値ははめ込み画像の画素値と背景画像の画素値を
Ｋの値に応１ニて混合加算した値となる。V, = (1-K) * VI, +KkVI2 ... (
1) ■ Pixel value of o2 composite image ■, 1: Pixel value of background image ■ 1 □: Pixel value of inset image: Pixel value after smoothing of mask image For example, after smoothing of mask image shown in Figure 6 When the pixel value K of is 1, from equation (1), ■. " V + □, and the pixel value of the composite image is equal to the pixel value of the inset image. Similarly, if = O, V. -vl, and the pixel value of the composite image is equal to the pixel value of the background image. Then 0<K<
Two lis become 1! Near the boundary of image ii, the pixel value of the composite image is a value obtained by mixing and adding the pixel value of the inset image and the pixel value of the background image according to the value of K.
本実施例ではマスク画像を平滑化するのに第５図に図示
するような３×３で均一のカーネルを持つフィルタを用
いたが、第７図のように中央部はど大きな値のカーネル
を持つフィルタでも、また第８図のように５×５のサイ
ズのフィルタでも差し支えない。In this example, a 3×3 filter with a uniform kernel as shown in FIG. 5 was used to smooth the mask image, but as shown in FIG. A filter with a size of 5×5 as shown in FIG. 8 may be used.
マスク画像合成装置１４にフィルタを数種類用意して、
これを選択して用いることができるよう？こすることに
より、必要？こ応してマスク画像の平滑化具合を変える
ことができる。従って、出力表示装置１７により合成画
像を表示してみて、満足な結果が得られなかった場合に
は、異なる平滑フィルタを選択して再実行をすることに
より、合成画像の境界付近での混合具合を変更すること
が可能となる。Several types of filters are prepared in the mask image synthesis device 14,
Is it possible to select and use this? Need by rubbing? Accordingly, the degree of smoothing of the mask image can be changed. Therefore, if you display a composite image on the output display device 17 and do not get a satisfactory result, you can select a different smoothing filter and rerun the process to improve the degree of mixing near the boundaries of the composite image. It becomes possible to change.
（発明の効果）
以上説明したように本発明によればマスク画像を平滑化
した値により２つの画像の比率混合演算を行うので、２
つの画像の境界での急激な濃度変化を自然な感じで緩や
かにすることができ、視覚的な違和感を除去することが
できる。また平滑化を行うのはマスク画像のみであり、
合成する２つの画像の境界付近のみを検出するような面
倒な操作は不要で、簡単なハードウェアで窩速に処理す
ることができる。(Effects of the Invention) As explained above, according to the present invention, the ratio mixing operation of two images is performed using the value obtained by smoothing the mask image.
A sudden change in density at the boundary between two images can be made gentler in a natural way, and visual discomfort can be eliminated. Also, only the mask image is smoothed,
There is no need for troublesome operations such as detecting only the vicinity of the boundary between two images to be combined, and the processing can be performed quickly using simple hardware.
特にＲＧＢカラー画像にて本実施例を適用する場合、平
滑化するのはマスク画像のみでＲＧＢ各面に対しては単
純な比率混合演算を行うのみであり、処理速度を太き（
向上することができる。In particular, when this embodiment is applied to an RGB color image, only the mask image is smoothed and a simple ratio mixing operation is performed on each RGB surface, which increases the processing speed (
can be improved.
第１図は本発明の基本的な構成を示すブロック図、第２
図はその動作を説明するためのフロー図、第３図は本発
明の一実施例の画像合成装置のブロック図、第４図は本
実施例でのマスク画像の一部を示す説明図、第５図は本
実施例で用いた平滑化フィルタ、第６図は第４図に示す
マスク画像に第５図の平滑化フィルタをかけた平滑化後
のマスク画像、第７図および第８図は平滑化フィルタの
他の例を示す図である。
１・・・マスク画像平滑化手段、２中温合演算手段、１
１・・・背景画像メモリ、１２・・・はめ込み画像メモ
リ、１３・・・マスク画像メモリ、１４川マスク画像平
滑化装置、１５・・・混合演算装置、１６・・・合成画
像メモリ、１７・・・出力表示装置。
第１図
第２図Figure 1 is a block diagram showing the basic configuration of the present invention, Figure 2 is a block diagram showing the basic configuration of the present invention.
3 is a block diagram of an image synthesis device according to an embodiment of the present invention. FIG. 4 is an explanatory diagram showing a part of a mask image in this embodiment. Figure 5 shows the smoothing filter used in this example, Figure 6 shows the mask image after applying the smoothing filter shown in Figure 5 to the mask image shown in Figure 4, and Figures 7 and 8 show the mask image after smoothing. FIG. 7 is a diagram showing another example of a smoothing filter. 1...Mask image smoothing means, 2 medium temperature calculation means, 1
DESCRIPTION OF SYMBOLS 1... Background image memory, 12... Fitting image memory, 13... Mask image memory, 14 River mask image smoothing device, 15... Mixing operation device, 16... Composite image memory, 17. ...Output display device. Figure 1 Figure 2
Claims (2)
置すべき領域を指定するマスク画像に対して、平滑化処
理を施すマスク画像平滑化手段と、 この平滑化処理後のマスク画像の値により２枚の画像の
比率混合演算を行う混合演算手段とを備えたことを特徴
とする画像合成装置。(1) A mask image smoothing unit that performs smoothing processing on a mask image that specifies the area where each image should be located when combining the first and second images, and a mask after this smoothing processing. 1. An image synthesizing device comprising: mixing calculation means for performing a ratio mixing calculation of two images based on the values of the images.
る平滑化の特性の異なる複数種の平滑化フィルタを有す
ることを特徴とする請求項（１）記載の画像合成装置。(2) The image synthesis apparatus according to claim 1, wherein the mask image smoothing means has a plurality of types of smoothing filters having different smoothing characteristics that can be selectively used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63258375A JP2887255B2 (en) | 1988-10-15 | 1988-10-15 | Image synthesis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63258375A JP2887255B2 (en) | 1988-10-15 | 1988-10-15 | Image synthesis device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02106734A true JPH02106734A (en) | 1990-04-18 |
| JP2887255B2 JP2887255B2 (en) | 1999-04-26 |
Family
ID=17319373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63258375A Expired - Lifetime JP2887255B2 (en) | 1988-10-15 | 1988-10-15 | Image synthesis device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2887255B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04125448A (en) * | 1990-09-18 | 1992-04-24 | Nikoku Kikai Kogyo Kk | Method for distinguishing border of detected values by multi-point sensor |
| JP2005092284A (en) * | 2003-09-12 | 2005-04-07 | Nintendo Co Ltd | Pickup image synthesizer and pickup image synthesizing program |
| JP2006120128A (en) * | 2004-09-21 | 2006-05-11 | Fuji Photo Film Co Ltd | Image processing device, image processing method and image processing program |
| US7529428B2 (en) | 2003-09-25 | 2009-05-05 | Nintendo Co., Ltd. | Image processing apparatus and storage medium storing image processing program |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134838A (en) * | 1979-04-09 | 1980-10-21 | Hisao Taki | Connection method of projected image |
| JPS61238039A (en) * | 1985-04-15 | 1986-10-23 | Konishiroku Photo Ind Co Ltd | Method and device for exposure of information |
| JPS62227646A (en) * | 1986-03-04 | 1987-10-06 | アグフア・ゲヴエルト・ナ−ムロゼ・ベンノ−トチヤツプ | Method and device for forming composite record from visuallydiscriminative image |
-
1988
- 1988-10-15 JP JP63258375A patent/JP2887255B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55134838A (en) * | 1979-04-09 | 1980-10-21 | Hisao Taki | Connection method of projected image |
| JPS61238039A (en) * | 1985-04-15 | 1986-10-23 | Konishiroku Photo Ind Co Ltd | Method and device for exposure of information |
| JPS62227646A (en) * | 1986-03-04 | 1987-10-06 | アグフア・ゲヴエルト・ナ−ムロゼ・ベンノ−トチヤツプ | Method and device for forming composite record from visuallydiscriminative image |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04125448A (en) * | 1990-09-18 | 1992-04-24 | Nikoku Kikai Kogyo Kk | Method for distinguishing border of detected values by multi-point sensor |
| JP2005092284A (en) * | 2003-09-12 | 2005-04-07 | Nintendo Co Ltd | Pickup image synthesizer and pickup image synthesizing program |
| US7411612B2 (en) | 2003-09-12 | 2008-08-12 | Nintendo Co., Ltd. | Photographed image composing apparatus and a storage medium storing a photographed image composing program |
| US7529428B2 (en) | 2003-09-25 | 2009-05-05 | Nintendo Co., Ltd. | Image processing apparatus and storage medium storing image processing program |
| JP2006120128A (en) * | 2004-09-21 | 2006-05-11 | Fuji Photo Film Co Ltd | Image processing device, image processing method and image processing program |
| JP4702534B2 (en) * | 2004-09-21 | 2011-06-15 | 富士フイルム株式会社 | Image processing apparatus, image processing method, and image processing program |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2887255B2 (en) | 1999-04-26 |
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