JP2000305481A - Projection type display device and information storage media - Google Patents
Projection type display device and information storage mediaInfo
- Publication number
- JP2000305481A JP2000305481A JP11113630A JP11363099A JP2000305481A JP 2000305481 A JP2000305481 A JP 2000305481A JP 11113630 A JP11113630 A JP 11113630A JP 11363099 A JP11363099 A JP 11363099A JP 2000305481 A JP2000305481 A JP 2000305481A
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- Prior art keywords
- person
- area
- display area
- brightness adjustment
- information
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液晶プロジェクタ
等の投写型表示装置及び情報記憶媒体に関する。The present invention relates to a projection display device such as a liquid crystal projector and an information storage medium.
【０００２】[0002]
【背景技術及び発明が解決しようとする課題】近年、パ
ーソナルコンピューターと液晶プロジェクタ等の投写型
表示装置の普及により、電子映像情報を拡大投影する形
態でのプレゼンテーションが広く行われている。2. Description of the Related Art In recent years, presentations in a form of enlarging and projecting electronic video information have been widely performed due to the spread of a projection display device such as a personal computer and a liquid crystal projector.
【０００３】プレゼンテーションにおいては、プレゼン
ターがディスプレイ領域の一部を直接位置指示すること
で、表示内容の要点を指し示すことができ、より効果的
で効率的なプレゼンテーションが実現する。したがっ
て、時にはディスプレイ領域内にプレゼンターが位置
し、聴衆を見ながらプレゼンテーションを行うケースが
ある。この時、投写型表示装置を使用している場合、プ
レゼンターの位置から見て、投写型表示装置と観衆は同
じ方向であるため、プレゼンターの目には、投写型表示
装置が出力する映像光が直接入射する。[0003] In a presentation, the presenter can directly indicate a part of the display area to indicate a key point of the display content, thereby realizing a more effective and efficient presentation. Therefore, sometimes the presenter is located in the display area and gives a presentation while watching the audience. At this time, when the projection display device is used, since the projection display device and the audience are in the same direction when viewed from the position of the presenter, the image light output from the projection display device is seen by the presenter's eyes. Directly incident.
【０００４】明るい環境においても十分な投写映像の明
るさが得られる様、投写型表示装置の投写光量は年々向
上している。従って、プレゼンターの目に投写型表示装
置の映像光が直接入射した場合、プレゼンターは眩しさ
と不快感を感ずるという問題がある。[0004] The amount of projection light of a projection display device is improving year by year so that sufficient projection image brightness can be obtained even in a bright environment. Therefore, when the image light of the projection display device directly enters the eyes of the presenter, there is a problem that the presenter feels glare and discomfort.
【０００５】またこの時、プレゼンターが眩しさの為に
目を細めてしまうことで顔の表情が変化して、聴衆のプ
レゼンターに対する印象に悪影響を及ぼす可能性もあ
る。[0005] At this time, if the presenter narrows his eyes due to glare, the facial expression changes, which may adversely affect the audience's impression of the presenter.
【０００６】本発明は、このような課題に鑑みて成され
たものであり、その目的は、投写型表示装置のディスプ
レイ領域における、人物が位置する領域の映像光の明る
さを制御する、プレゼンター防眩対策機能を有する投写
型表示装置、および投写型表示装置を有するシステムの
情報記憶媒体を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to control the brightness of image light in an area where a person is located in a display area of a projection display device. An object of the present invention is to provide a projection display device having an anti-glare function and an information storage medium of a system having the projection display device.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するため
に、第１の発明は、ディスプレイ領域に映像光を投写す
る映像光投写手段と、前記ディスプレイ領域を撮像する
撮像手段と、前記撮像手段によって得られた撮像情報か
ら前記ディスプレイ領域に位置する人物の位置情報を検
出する人物位置検出手段と、前記人物の位置情報から前
記映像光の輝度調整領域を決定する輝度調整領域決定手
段と、前記輝度調整領域の前記映像光の輝度を調整する
映像光輝度調整手段と、を有することを特徴とする投写
型表示装置である。According to a first aspect of the present invention, there is provided a video light projecting means for projecting video light onto a display area, an imaging means for imaging the display area, and an imaging means. A person position detecting unit that detects position information of a person located in the display area from the imaging information obtained by the image capturing unit; a luminance adjustment region determining unit that determines a luminance adjustment region of the video light from the position information of the person; And a video light brightness adjusting means for adjusting the brightness of the video light in the brightness adjustment area.
【０００８】このため、ディスプレイ領域に位置する人
物の位置情報から、映像光の制御を行うことで、ディス
プレイ領域の人物、つまりプレゼンターのための防眩対
策が可能になる。For this reason, by controlling the image light from the position information of the person located in the display area, anti-glare measures can be taken for the person in the display area, that is, for the presenter.
【０００９】第２の発明は、第１の発明において、前記
輝度調整領域決定手段は、前記人物位置検出手段が検出
する人物位置と重複する領域を前記映像光の輝度調整範
囲とすることを特徴とする投写型表示装置である。In a second aspect based on the first aspect, the brightness adjustment area determining means sets an area overlapping with the person position detected by the person position detection means as a brightness adjustment range of the image light. Is a projection display device.
【００１０】このため、人物位置と重複する領域の映像
光の輝度制御を行うことで、人物の目の位置の映像光の
輝度制御を確実に行うことができる。また人物の目の位
置のみを検出する場合に比べ、人物そのものの位置は領
域が大きく、容易に確実に検出でき、効果的な防眩対策
が可能である。なお、人物位置に投写される映像光は、
映像を見る観衆にとっては、人物の存在によって映像が
見えない領域であり、人物位置全体の映像光の輝度制御
を行うことは、表示機能に大きな影響を与えるものでは
ない。For this reason, by controlling the brightness of the image light in the area overlapping with the position of the person, the brightness of the image light at the position of the eyes of the person can be reliably controlled. Further, compared with the case where only the position of the eyes of a person is detected, the position of the person itself has a larger area, can be easily and reliably detected, and an effective anti-glare measure is possible. The image light projected on the person position is
It is an area where the image cannot be seen due to the presence of a person for the audience watching the image, and controlling the brightness of the image light at the entire position of the person does not greatly affect the display function.
【００１１】第３の発明は、第１の発明において、前記
撮像手段は、前記ディスプレイ領域とその周辺領域を撮
像範囲とする事を特徴とする投写型表示装置である。According to a third aspect of the present invention, in the projection type display apparatus according to the first aspect, the imaging means sets the display area and its peripheral area as an imaging range.
【００１２】このため、ディスプレイ領域の周辺でも、
人物位置検出が可能になる。ディスプレイ領域で人物検
出を行うには、ディスプレイ像と人物像の分離を行う必
要があるが、ディスプレイ領域の周辺はその必要が無
く、容易に人物像の検出が可能になる。For this reason, even around the display area,
Person position detection becomes possible. In order to detect a person in the display area, it is necessary to separate the display image from the person image. However, the periphery of the display area does not need to be separated, and the person image can be easily detected.
【００１３】第４の発明は、第３の発明において、前記
人物位置検出手段は、前記撮像手段が撮像したディスプ
レイ領域下部の撮像情報を元に、ディスプレイ領域にお
ける人物位置の水平方向範囲の検出を行ない、前記輝度
調整範囲決定手段は、前記人物位置の水平方向範囲の前
記ディスプレイ領域を輝度調整範囲とすることを特徴と
する投写型表示装置である。In a fourth aspect based on the third aspect, the person position detecting means detects the horizontal range of the person position in the display area based on image information of the lower part of the display area taken by the imaging means. The brightness adjustment range determining means sets the display area in a horizontal range of the person position as a brightness adjustment range.
【００１４】このため、ディスプレイ領域下部という限
定された領域の撮像情報から、容易に人物像を検出する
ことができる。ディスプレイ領域下部で位置検出が可能
な理由は、プレゼンターである人物は通常直立姿勢であ
るので、ディスプレイ領域に目つまり顔が存在する場合
は、ディスプレイ領域下部には胴体もしくは脚部が存在
する。それを検出することで、人物のディスプレイ領域
の水平方向位置が検出できるためである。ディスプレイ
領域の検出した水平方向位置全体に対して、映像光の輝
度制御を行うことで、プレゼンターが直立している場
合、目の位置の映像光も輝度制御できる。For this reason, a person image can be easily detected from the imaging information in a limited area below the display area. The reason that the position can be detected in the lower part of the display area is that the person who is the presenter usually has an upright posture. Therefore, when eyes, that is, a face exists in the display area, a body or a leg exists in the lower part of the display area. By detecting this, the horizontal position of the display area of the person can be detected. By controlling the brightness of the image light over the entire horizontal position detected in the display area, when the presenter is standing upright, the brightness of the image light at the position of the eyes can also be controlled.
【００１５】第５の発明は、第１の発明において、前記
映像光輝度調整手段は、前記輝度調整領域の前記映像光
の輝度を黒レベルとすることを特徴とする投写型表示装
置である。According to a fifth aspect of the present invention, in the projection type display device according to the first aspect, the image light luminance adjusting means sets the luminance of the image light in the luminance adjustment area to a black level.
【００１６】このため、プレゼンターの目に直接入射す
る映像光を大幅に低減することができる。なお、人物位
置に投写される映像光は、映像を見る観衆にとっては、
人物の存在によって映像が見えない領域であり、人物位
置全体の映像光を黒にしても、表示機能に大きな影響を
与えることもない。[0016] For this reason, image light directly entering the presenter's eye can be greatly reduced. In addition, the image light projected on the person position is, for the audience watching the image,
This is an area where an image cannot be seen due to the presence of a person. Even if the image light at the entire position of the person is made black, the display function is not significantly affected.
【００１７】第６の発明は、投写型表示装置のディスプ
レイ領域の撮像情報に基づき、前記ディスプレイ領域に
位置する人物の位置情報を検出するための人物位置検出
制御情報と、前記人物の位置情報から前記投写型表示装
置が投写する映像光の輝度調整領域を決定するための輝
度調整領域決定制御情報と、前記輝度調整領域の前記映
像光の輝度を調整するための映像光輝度調整制御情報
と、を記憶したコンピュータ読取り可能な情報記憶媒体
である。According to a sixth aspect of the present invention, based on image pickup information of a display area of a projection display device, person position detection control information for detecting position information of a person located in the display area, and position information of the person. Brightness adjustment area determination control information for determining the brightness adjustment area of the video light projected by the projection display device, and video light brightness adjustment control information for adjusting the brightness of the video light of the brightness adjustment area, Is a computer-readable information storage medium storing the information.
【００１８】第７の発明は、第６の発明において、前記
輝度調整領域決定制御情報は、前記ディスプレイ領域に
位置する人物の位置に重複する領域を前記映像光の輝度
制御範囲とする制御情報を含むことを特徴とする情報記
憶媒体。In a seventh aspect based on the sixth aspect, the brightness adjustment area determination control information includes control information that sets an area overlapping a position of a person located in the display area as a brightness control range of the image light. An information storage medium characterized by including.
【００１９】第８の発明は、第６の発明において、前記
人物位置検出制御情報は、投写型表示装置のディスプレ
イ領域下部の画像情報を元に、ディスプレイ領域におけ
る人物位置の水平方向範囲の検出を行ない、前記輝度調
整範囲決定制御情報は、前記人物位置の水平方向範囲の
前記ディスプレイ領域を輝度調整範囲とする制御情報を
含むことを特徴とする情報記憶媒体である。In an eighth aspect based on the sixth aspect, the person position detection control information includes detecting the horizontal range of the person position in the display area based on image information at the lower part of the display area of the projection display device. The information storage medium is characterized in that the brightness adjustment range determination control information includes control information for setting the display area in a horizontal range of the person position as a brightness adjustment range.
【００２０】第９の発明は、第６の発明において、前記
映像光輝度調整制御情報は、前記輝度調整領域の前記映
像光の輝度を黒レベルとする制御情報を含むことを特徴
とする情報記憶媒体である。In a ninth aspect based on the sixth aspect, the image light luminance adjustment control information includes control information for setting the luminance of the image light in the luminance adjustment area to a black level. Medium.
【００２１】[0021]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００２２】（１）全体の説明 図１は、本発明が適用された投写型表示装置の使用形態
の概略説明図である。(1) Overall Description FIG. 1 is a schematic explanatory diagram of a use form of a projection display device to which the present invention is applied.
【００２３】スクリーン４上には、正面に設けられた投
写型表示装置であるプロジェクター１から、ディスプレ
イ領域３に映像光が投写されている。図１ではプレゼン
ターである人物５は、所定の位置を指し示めすために、
このディスプレイ領域３内に存在し、観衆７を見ながら
プレゼンテーションを行っている様子が描かれている。
プロジェクター１には、撮像手段であるＣＣＤカメラ２
を設け、ディスプレイ領域上の人物位置を検出する。そ
して、人物位置の検出結果に従い、映像光輝度調整領域
６の映像光を黒レベルにする。よって、プロジェクター
１から投写される映像光の、人物５の目に対する入射量
が低減され、人物５は、映像光による眩しさを感じな
い。On the screen 4, image light is projected onto the display area 3 from the projector 1 which is a projection display device provided on the front. In FIG. 1, the person 5 who is the presenter is pointing at a predetermined position.
A state in which the presentation is present in the display area 3 while watching the audience 7 is depicted.
The projector 1 includes a CCD camera 2 as an imaging unit.
To detect the position of a person on the display area. Then, according to the detection result of the person position, the image light in the image light luminance adjustment area 6 is set to the black level. Accordingly, the amount of image light projected from the projector 1 to the eyes of the person 5 is reduced, and the person 5 does not feel glare due to the image light.
【００２４】ここで、映像光輝度調整領域６には本来表
示されるべきディスプレイ情報が表示されなくなるが、
人物５はスクリーン４で映像光が反射するのを妨げてい
るので、たとえ映像光の輝度を調整しなかったとして
も、人物５が位置する箇所では正常な映像を得ることが
できないため、映像光輝度調整領域６がほぼ人物５の位
置と一致する場合、映像光輝度調整６による、表示情報
の低下は少ない。Here, display information that should be displayed is not displayed in the video light luminance adjustment area 6, but
Since the person 5 prevents the image light from being reflected on the screen 4, even if the brightness of the image light is not adjusted, a normal image cannot be obtained at the position where the person 5 is located. When the brightness adjustment area 6 substantially coincides with the position of the person 5, the decrease in display information due to the video light brightness adjustment 6 is small.
【００２５】図２は、本実施例の投写型表示装置システ
ムの機能ブロック図を示す。FIG. 2 is a functional block diagram of the projection display system of this embodiment.
【００２６】投写型表示装置１１は、映像光投写手段１
３の他に、撮像手段１４と処理部１２を有する。The projection type display device 11 includes the image light projection unit 1.
In addition to 3, it has an imaging unit 14 and a processing unit 12.
【００２７】撮像手段１４は、光を電気信号に変換する
手段であり、ＣＣＤカメラを使用する。その撮像領域
は、映像光投写手段１３のディスプレイ領域を含む領域
である。The image pickup means 14 is a means for converting light into an electric signal, and uses a CCD camera. The imaging area is an area including the display area of the image light projection unit 13.
【００２８】処理部１２は映像光の輝度制御を行う部分
で、機能別に、人物位置検出部１５、輝度調整領域決定
部１６及び映像光輝度調整部１７より成る。人物位置検
出部１５は、撮像手段１４で得られる撮像情報から、デ
ィスプレイ領域上の人物の位置を検出する処理を行う。
輝度調整領域決定部１６は、人物位置検出部１５で求め
た人物の位置情報を元に、ディスプレイ領域のどの領域
の輝度を低く調整するか、その領域を決定する処理を行
う。映像光輝度調整部１７では、本来の表示イメージを
示す映像入力１８に対して、輝度調整領域決定部１６で
求めた輝度調整領域の輝度を、黒レベルなどにして、輝
度を低減する処理を行う。The processing section 12 controls the brightness of the image light, and includes a person position detecting section 15, a brightness adjusting area determining section 16 and a video light brightness adjusting section 17 for each function. The person position detection unit 15 performs a process of detecting a position of a person on the display area from the imaging information obtained by the imaging unit 14.
The brightness adjustment area determination unit 16 performs a process of determining which area of the display area the brightness should be adjusted to be lower based on the position information of the person obtained by the person position detection unit 15. The video light brightness adjustment unit 17 performs a process of reducing brightness by setting the brightness of the brightness adjustment area obtained by the brightness adjustment area determination unit 16 to a black level or the like for the video input 18 indicating the original display image. .
【００２９】なお、撮像手段１４、及び処理部１２は、
映像光投写手段１３と共に、投写型表示装置１１の内部
に、必ずしも一体化されて存在する必要はない。例え
ば、処理部１２のみ外部に存在してもよい。また、処理
部１２の一部の機能、例えば映像光輝度調整部１７のみ
投写型表示装置１１内に存在し、それ以外が外部に存在
してもよい。また、処理部１２は、専用のハードウェア
でもコンピューター上でも、機能を実現できる。Note that the imaging means 14 and the processing unit 12
Along with the image light projection means 13, it is not always necessary to be integrated inside the projection display device 11. For example, only the processing unit 12 may exist outside. Further, only a part of the functions of the processing unit 12, for example, the image light luminance adjusting unit 17 may be present in the projection display device 11, and the other may be present outside. In addition, the processing unit 12 can realize a function using dedicated hardware or a computer.
【００３０】（２）防眩処理内容の説明 ディスプレイ領域上の人物位置の映像光輝度を低減する
一連の処理である、防眩処理の一実施例について説明す
る。この防眩処理は、処理部１２で行う。(2) Description of Anti-Glare Process An embodiment of the anti-glare process, which is a series of processes for reducing the brightness of image light at a person position on the display area, will be described. This anti-glare processing is performed by the processing unit 12.
【００３１】図３は、本実施例の防眩処理全体を示すフ
ローチャートであり、図４は、本実施例の防眩処理の動
作を示すタイミングチャートである。図３と図４を用い
て説明を行う。FIG. 3 is a flowchart showing the entire anti-glare processing of this embodiment, and FIG. 4 is a timing chart showing the operation of the anti-glare processing of this embodiment. This will be described with reference to FIGS.
【００３２】まず、ステップＳ０１で、撮像手段で得ら
れる撮像情報から、ディスプレイ領域周辺下部領域２０
の撮像情報を抽出する。つまり、全撮像領域２２の撮像
情報の中から人物位置検出をする領域の情報だけを抽出
する。ディスプレイ領域周辺下部領域２０の撮像情報か
ら人物位置の水平方向位置の検出を行う目的は、ディス
プレイ領域で人物検出を行う場合には、ディスプレイ像
と人物像の分離を行う必要があるが、ディスプレイ領域
の周辺ではその必要が無く、容易に人物像の検出が可能
であるからである。また、ディスプレイ領域周辺下部領
域２０の撮像情報から人物位置の水平方向位置の検出を
行うことが可能である理由は、プレゼンターである人物
は直立しているので、ディスプレイ領域に目つまり顔が
存在する場合は、ディスプレイ領域周辺下部には胴体も
しくは脚部が存在する。したがってそれを検出すること
で、人物のディスプレイ領域の水平方向位置が検出でき
るからである。なお、人物の水平方向位置のみを検出す
る場合においても、ディスプレイ領域の検出した水平方
向位置全体に対して映像光の輝度制御を行うことで、プ
レゼンターが直立している場合、目の位置の映像光も輝
度制御が可能であり、プレゼンターの防眩という目的が
達成できる。First, in step S01, based on the imaging information obtained by the imaging means, the lower area 20 around the display area is obtained.
Is extracted. In other words, only the information of the area where the person position is to be detected is extracted from the imaging information of the entire imaging area 22. The purpose of detecting the position of the person in the horizontal direction from the imaging information in the lower area 20 around the display area is to separate the display image and the person image when performing the person detection in the display area. This is because there is no necessity in the vicinity of, and a human image can be easily detected. In addition, the reason why the horizontal position of the person can be detected from the imaging information in the lower area 20 around the display area is that the person who is the presenter is upright, so that eyes or faces exist in the display area. In such a case, a torso or a leg exists at a lower portion around the display area. Therefore, by detecting this, the horizontal position of the display area of the person can be detected. Even when only the horizontal position of the person is detected, the brightness control of the image light is performed for the entire horizontal position detected in the display area, so that when the presenter stands upright, the image of the eye position is displayed. The brightness of the light can also be controlled, and the purpose of presenter anti-glare can be achieved.
【００３３】撮像信号３１は、ステップＳ０１の処理に
よって得た、図４のディスプレイ領域周辺下部領域２０
の撮像情報の１水平ライン分を示す。人物５が存在する
部分の、撮像信号３１の輝度レベルは人物５が存在しな
い部分よりも低い。これは、ディスプレイ周辺領域がス
クリーンである場合、人物５はスクリーンよりも光を反
射しないため、暗くなるためである。The image pickup signal 31 is obtained by the processing in step S01 and is formed in the lower area 20 around the display area in FIG.
1 for one horizontal line of the imaging information. The luminance level of the imaging signal 31 in the portion where the person 5 exists is lower than that in the portion where the person 5 does not exist. This is because, when the display peripheral area is a screen, the person 5 does not reflect light than the screen, and therefore becomes darker.
【００３４】次に、ステップＳ０２で、ステップＳ０１
で得た撮像情報を２値化して人物位置情報を生成する。
つまり、撮像信号３１を２値化スレッショルド３２によ
って２値化して、人物の水平方向位置を示す人物位置信
号３３を得る。Next, in step S02, step S01
Is binarized to generate person position information.
That is, the imaging signal 31 is binarized by the binarization threshold 32 to obtain the person position signal 33 indicating the horizontal position of the person.
【００３５】なお、ステップＳ０１とＳ０２の処理は、
図２の人物位置検出部１５で行う処理に対応する。The processing in steps S01 and S02 is as follows.
This corresponds to the processing performed by the person position detection unit 15 in FIG.
【００３６】次に、ステップＳ０３で、人物位置検出情
報から映像光の輝度調整領域情報を生成する。具体的に
は、ステップＳ０２で得た、人物の水平方向位置情報を
示す人物位置信号３３に対して、パルス幅つまり位置情
報を広げた、輝度調整領域信号３４を生成する。元々の
人物位置領域よりも、輝度調整領域を広くする理由は、
人物が完全に直立していないケースにおいても、人物の
顔の領域の映像光制御ができる様、余裕を持たせるため
である。Next, in step S03, luminance adjustment area information of video light is generated from the person position detection information. More specifically, a luminance adjustment area signal 34 is generated in which the pulse width, that is, the position information is broadened with respect to the person position signal 33 indicating the horizontal position information of the person obtained in step S02. The reason for making the brightness adjustment area wider than the original person position area is
This is because even if the person is not completely upright, a margin is provided so that the image light control of the area of the face of the person can be performed.
【００３７】なお、輝度調整領域が必要以上に広いと、
正常なディスプレイ領域が不必要に狭くなるため、人物
位置領域よりも輝度調整領域を広くする程度は、調整可
能な構成とするのが望ましい。If the brightness adjustment area is wider than necessary,
Since the normal display area is unnecessarily narrowed, it is desirable that the brightness adjustment area be made wider than the person position area so as to be adjustable.
【００３８】ステップＳ０３の処理は、図２の輝度調整
領域決定部で行う処理に対応する。The processing in step S03 corresponds to the processing performed by the brightness adjustment area determining unit in FIG.
【００３９】最後に、ステップＳ０４で、輝度調整領域
の映像信号を黒レベル化して投写映像情報を生成する。
具体的には映像光投写手段が本来投写する映像情報であ
る映像入力信号３５に対して、ステップＳ０３で得た輝
度調整領域信号３４のタイミングで、黒レベルにクラン
プする処理を行い、投写映像信号３６を得る。Finally, in step S04, the video signal in the brightness adjustment area is converted to a black level to generate projection video information.
Specifically, the video light projection unit performs a process of clamping to a black level at the timing of the luminance adjustment area signal 34 obtained in step S03 on the video input signal 35 which is video information originally projected by the video light projection unit. Get 36.
【００４０】ここで、図４は、ある水平１ライン分の処
理を示しているが、輝度調整領域信号３４は、１フレー
ム分の時間保持し、映像入力信号３５の各水平ラインご
とに、輝度調整領域信号３４のタイミングで黒レベルク
ランプ処理を行い、１フレーム分の投写映像信号３６を
得る。その時のディスプレイには、黒レベル領域２３が
生ずるため、人物５の目に対する映像光の直接入射量が
低減され、防眩効果が得られる。Here, FIG. 4 shows processing for one horizontal line. The luminance adjustment area signal 34 is held for one frame, and the luminance of the video input signal 35 is changed for each horizontal line. A black level clamp process is performed at the timing of the adjustment area signal 34 to obtain a projection video signal 36 for one frame. At that time, since the black level region 23 is generated on the display, the amount of image light directly incident on the eyes of the person 5 is reduced, and an antiglare effect is obtained.
【００４１】以上、防眩処理の一実施例を説明したが、
本実施例の防眩処理方法は、ディスプレイ領域周辺で人
物位置の水平方向位置を検出し、ディスプレイ領域のあ
る水平範囲の映像光を黒レベルする方法であり、厳密に
ディスプレイ領域内の人物位置を検出する場合に比べ、
シンプルな処理で確実に防眩効果を得ることができる特
徴がある。The embodiment of the anti-glare treatment has been described above.
The anti-glare processing method of the present embodiment is a method of detecting a horizontal position of a person position around the display area and black level video light in a certain horizontal range of the display area, and strictly determining a person position within the display area. Compared to detection,
There is a feature that an antiglare effect can be surely obtained by simple processing.
【００４２】なお、本発明は、前述した実施の形態に限
定されるものではなく、本発明の要旨の範囲で各種の変
形が可能である。It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the present invention.
【００４３】たとえば、撮像手段の、ディスプレイ領域
周囲下部領域２０のみを撮像領域としてもよい。For example, only the lower area 20 around the display area of the imaging means may be used as the imaging area.
【００４４】また、撮像手段と処理部を投写型表示装置
と別置し、処理部をパーソナルコンピューターで実現し
てもよい。Further, the imaging means and the processing section may be provided separately from the projection display device, and the processing section may be realized by a personal computer.
【図１】本発明が適用された、投写型表示装置の使用形
態の概略説明図。FIG. 1 is a schematic explanatory view of a usage form of a projection display device to which the present invention is applied.
【図２】本実施例の投写型表示装置システムの機能ブロ
ック図。FIG. 2 is a functional block diagram of the projection display apparatus system according to the embodiment.
【図３】本実施例の防眩処理全体を示すフローチャー
ト。FIG. 3 is a flowchart illustrating an entire anti-glare process according to the embodiment.
【図４】本実施例の防眩処理の動作を示すタイミングチ
ャート。FIG. 4 is a timing chart showing the operation of the anti-glare processing of the present embodiment.
１．プロジェクター ２．ＣＣＤカメラ ３．ディスプレイ領域 ４．スクリーン ５．人物 ６．映像光輝度調整領域 ７．観衆 １１．投写型表示装置 １２．処理部 １３．映像光投写手段 １４．撮像手段 １５．人物位置検出部 １６．輝度調整領域決定部 １７．映像光輝度調整部 １８．映像入力 ２０．ディスプレイ領域周辺下部領域 ２２．全撮像領域 ２３．黒レベル領域 ３１．撮像信号 ３２．２値化スレッショルド ３３．人物位置信号 ３４．輝度調整領域信号 ３５．映像入力信号 ３６．投写映像信号 1. Projector 2. 2. CCD camera Display area 4. Screen 5. Person 6. 6. Video light brightness adjustment area Audience 11. Projection display device 12. Processing unit 13. 13. Image light projection means Imaging means 15. Person position detector 16. Brightness adjustment area determination unit 17. Video light brightness adjustment unit 18. Video input 20. 22. Lower area around display area All imaging area 23. Black level area 31. Imaging signal 32.2 binarization threshold 33. Person position signal 34. Brightness adjustment area signal 35. Video input signal 36. Projected video signal
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｇ０９Ｇ 5/00 ５５０ Ｇ０９Ｇ 5/00 ５５０Ｃ Ｈ０４Ｎ 5/74 Ｈ０４Ｎ 5/74 Ｚ Ｆターム(参考） 5C058 BA05 BA28 BB25 EA02 5C080 AA10 BB05 CC06 DD30 EE28 FF09 GG07 GG09 JJ01 JJ02 JJ06 JJ07 5C082 AA03 AA27 BA02 BA12 BA29 CA11 CA54 CA82 CB03 DA51 MM00 MM09 MM10 5G435 DD06 DD13 LL15 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) G09G 5/00 550 G09G 5/00 550C H04N 5/74 H04N 5/74 Z F term (Reference) 5C058 BA05 BA28 BB25 EA02 5C080 AA10 BB05 CC06 DD30 EE28 FF09 GG07 GG09 JJ01 JJ02 JJ06 JJ07 5C082 AA03 AA27 BA02 BA12 BA29 CA11 CA54 CA82 CB03 DA51 MM00 MM09 MM10 5G435 DD06 DD13 LL15
Claims (9)
像光投写手段と、前記ディスプレイ領域を撮像する撮像
手段と、前記撮像手段によって得られた撮像情報から前
記ディスプレイ領域に位置する人物の位置情報を検出す
る人物位置検出手段と、前記人物の位置情報から前記映
像光の輝度調整領域を決定する輝度調整領域決定手段
と、前記輝度調整領域の前記映像光の輝度を調整する映
像光輝度調整手段と、を有することを特徴とする投写型
表示装置。1. An image light projecting means for projecting image light onto a display area, an imaging means for imaging the display area, and position information of a person located in the display area from image information obtained by the imaging means. A person position detecting means for detecting, a brightness adjustment area determining means for determining a brightness adjustment area of the video light from the position information of the person, and a video light brightness adjustment means for adjusting the brightness of the video light in the brightness adjustment area. , A projection type display device.
定手段は、前記人物位置検出手段が検出する人物位置と
重複する領域を前記映像光の輝度調整範囲とすることを
特徴とする投写型表示装置。2. The projection display according to claim 1, wherein said brightness adjustment area determination means sets an area overlapping with a person position detected by said person position detection means as a brightness adjustment range of said video light. apparatus.
記ディスプレイ領域とその周辺領域を撮像範囲とする事
を特徴とする投写型表示装置。3. The projection display apparatus according to claim 1, wherein said imaging means sets the display area and a peripheral area as an imaging range.
段は、前記撮像手段が撮像したディスプレイ領域下部の
撮像情報を元に、ディスプレイ領域における人物位置の
水平方向範囲の検出を行ない、 前記輝度調整範囲決定手段は、前記人物位置の水平方向
範囲の前記ディスプレイ領域を輝度調整範囲とすること
を特徴とする投写型表示装置。4. The brightness adjustment according to claim 3, wherein the person position detection means detects a horizontal range of a person position in the display area based on image information of a lower part of the display area taken by the imaging means. The projection display device, wherein the range determining means sets the display area in a horizontal range of the person position as a brightness adjustment range.
手段は、前記輝度調整領域の前記映像光の輝度を黒レベ
ルとすることを特徴とする投写型表示装置。5. The projection display device according to claim 1, wherein the image light luminance adjusting means sets the luminance of the image light in the luminance adjustment area to a black level.
像情報に基づき、前記ディスプレイ領域に位置する人物
の位置情報を検出するための人物位置検出制御情報と、
前記人物の位置情報から前記投写型表示装置が投写する
映像光の輝度調整領域を決定するための輝度調整領域決
定制御情報と、前記輝度調整領域の前記映像光の輝度を
調整するための映像光輝度調整制御情報と、を記憶した
コンピュータ読取り可能な情報記憶媒体。6. A person position detection control information for detecting position information of a person located in the display area based on imaging information of a display area of the projection display device,
Brightness adjustment area determination control information for determining the brightness adjustment area of the image light projected by the projection display device from the position information of the person, and image light for adjusting the brightness of the image light in the brightness adjustment area A computer-readable information storage medium storing brightness adjustment control information;
定制御情報は、前記ディスプレイ領域に位置する人物の
位置に重複する領域を前記映像光の輝度制御範囲とする
制御情報を含むことを特徴とする情報記憶媒体。7. The luminance adjustment area determination control information according to claim 6, wherein the luminance adjustment area determination control information includes control information that sets an area overlapping a position of a person located in the display area as a luminance control range of the video light. Information storage medium.
御情報は、投写型表示装置のディスプレイ領域下部の画
像情報を元に、ディスプレイ領域における人物位置の水
平方向範囲の検出を行ない、 前記輝度調整範囲決定制御情報は、前記人物位置の水平
方向範囲の前記ディスプレイ領域を輝度調整範囲とする
制御情報を含むことを特徴とする情報記憶媒体。8. The brightness adjustment according to claim 6, wherein the person position detection control information detects a horizontal range of a person position in the display area based on image information in a lower part of the display area of the projection display device. The information storage medium, wherein the range determination control information includes control information for setting the display area in a horizontal range of the person position as a brightness adjustment range.
制御情報は、前記輝度調整領域の前記映像光の輝度を黒
レベルとする制御情報を含むことを特徴とする情報記憶
媒体。9. The information storage medium according to claim 6, wherein the video light luminance adjustment control information includes control information for setting the luminance of the video light in the luminance adjustment area to a black level.
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|---|---|---|---|
| JP11363099A JP3630015B2 (en) | 1999-04-21 | 1999-04-21 | Projection display apparatus and information storage medium |
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