【０００１】[0001]
【発明の属する技術分野】本発明は、ＣＲＴプロジェク
タや液晶プロジェクタなどにより大型スクリーンに画像
を投射する画像ディスプレイシステムに関し、特に、プ
ロジェクタとスクリーンの相対的な位置が可変である可
搬型プロジェクタの画面位置調整の技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display system for projecting an image on a large screen by a CRT projector or a liquid crystal projector, and more particularly, to a screen position of a portable projector in which the relative position between the projector and the screen is variable. Related to adjustment technology.
【０００２】[0002]
【従来の技術】上述のようなプロジェクタの画面調整方
法については、従来、種々の手段が開示されている。2. Description of the Related Art Various means have been disclosed for the above-described projector screen adjusting method.
【０００３】例えば、焦点調整については、一般のオー
トフォーカスカメラのように、赤外線や超音波を用いて
対象物までの距離を測定し、その距離に応じてレンズの
焦点を自動的に調整する技術が知られている。その１例
として、特開平4−338706号の「自動焦点プロジェク
タ」は、可搬型映写装置の焦点調節を自動的に行うため
に、スクリーンで反射される超音波信号の伝播時間を測
定する超音波送受信素子とゼロクロス回路を用いて、計
測した距離により投影レンズの焦点調節を行うものであ
る。[0003] For example, as for focus adjustment, like a general auto-focus camera, a technique of measuring a distance to an object using infrared rays or ultrasonic waves, and automatically adjusting the focus of a lens according to the distance. It has been known. As one example, Japanese Patent Application Laid-Open No. 4-338706 discloses an "auto focus projector" which measures the propagation time of an ultrasonic signal reflected by a screen in order to automatically adjust the focus of a portable projection device. The focus adjustment of the projection lens is performed based on the measured distance by using the transmission / reception element and the zero-cross circuit.
【０００４】また、特開平8−088860号の「自動画像歪
補正装置」は、ＣＲＴ方式ビデオプロジェクタのラスタ
歪調整とコンバーゼンス調整を自動的に行うために、ビ
デオプロジェクタからスクリーン上に投射した調整用映
像の一部を可動ミラーを介してカメラで拡大撮像し、そ
の撮像映像信号をデジタルデータに変換してＣＰＵで画
像処理することにより、スクリーン上のｍ×ｎ点の調整
点のラスタ歪量とコンバーゼンスずれ量を自動的に測定
して補正信号を作成することが開示されている。スクリ
ーンのコーナー部を撮像するための撮像手段の駆動制御
位置は調整者によって入力される。Japanese Patent Application Laid-Open No. 08-088860 discloses an "automatic image distortion correction apparatus" for automatically adjusting raster distortion and convergence of a CRT video projector. A part of the image is magnified by a camera via a movable mirror, the image signal is converted into digital data, and the image is processed by a CPU. It is disclosed that a correction signal is created by automatically measuring a convergence deviation amount. The drive control position of the imaging means for imaging the corner of the screen is input by the adjuster.
【０００５】特開平10−090795号の「画像ディスプレイ
システム及び焦点合わせ方法」は、光源の光を変調して
ピクセルからなる画像を形成する空間光変調器（ＳＬ
Ｍ）と、空間光変調器の形成した画像を画像平面上に焦
点合わせする光学系と、画像平面上に投影されたピクセ
ルの少なくとも1つの焦点を感知してセンサ出力を与え
るセンサと、光学系のパラメータをセンサ出力の関数と
して変える調整手段とを具えて、ＳＬＭに光を照射して
ピクセルからなる画像をディスプレイ用画像平面に確定
し、その画像の少なくとも１つのピクセルの鮮鋭度を感
知し、光学系の光学的パラメータを感知されたピクセル
鮮鋭度の関数として調整することにより、投影される画
像の鮮鋭度ではなく、ＳＬＭにより発生される個別のピ
クセルの鮮鋭度を感知して焦点を確立している。[0005] Japanese Patent Application Laid-Open No. 10-090795 discloses an "image display system and a focusing method" which discloses a spatial light modulator (SL) for modulating light from a light source to form an image composed of pixels.
M) an optical system for focusing an image formed by the spatial light modulator on an image plane, a sensor for sensing a focus of at least one pixel projected on the image plane and providing a sensor output, and an optical system. Adjusting the parameters of the SLM as a function of the sensor output by irradiating the SLM with light to determine an image of pixels on the image plane for display, sensing the sharpness of at least one pixel of the image, By adjusting the optical parameters of the optical system as a function of the perceived pixel sharpness, the focus is established by sensing the sharpness of the individual pixels generated by the SLM, rather than the sharpness of the projected image. ing.
【０００６】また、特開平10−161243号の「三板式液晶
プロジェクタのフォーカス調整方法及び装置」は、緑、
赤、青の三板式液晶プロジェクタの各色毎の画面の焦点
調整を、精度よく、短時間で行うために、三板式液晶プ
ロジェクタによってスクリーン上に投影された投射画像
をカラー撮像するＣＣＤカメラと、撮影された３色の映
像信号をディジタル化するＡ／Ｄ変換器と、各色のディ
ジタルデータを記憶する画像メモリと、各色毎にフォー
カスの合い具合をフォーカス値として数値化する演算器
と、表示部とを備え、各色の投射画像のフォーカス分布
を求め、この分布データによりフォーカスを調整してい
る。[0006] Japanese Patent Application Laid-Open No. 10-161243 discloses a method and apparatus for adjusting the focus of a three-panel liquid crystal projector.
In order to accurately and quickly adjust the focus of the screen of each color of the red and blue three-panel liquid crystal projectors in a short time, a CCD camera that captures a color image of the projected image projected on the screen by the three-panel liquid crystal projector, and shooting An A / D converter for digitizing the three color video signals, an image memory for storing digital data of each color, an arithmetic unit for digitizing the degree of focus for each color as a focus value, and a display unit. The focus distribution of the projected image of each color is obtained, and the focus is adjusted based on the distribution data.
【０００７】また、特許2766229号（特開平9−101447
号）の「カラープロジェクタの合焦装置」に開示された
方式は、カラー液晶表示器の画像を投影レンズにより拡
大してスクリーンに投影するカラープロジェクタのスク
リーン上の投影画面全体について高精度に合焦点調整を
おこなうために、スクリーンの投影画面を撮像してＲ，
Ｇ，Ｂ信号をそれぞれ出力するＴＶカメラと、投影画面
の中央部分及び周辺部分に予め設定された各合焦確認領
域内におけるＲ，Ｇ，Ｂ信号の信号レベルの変動を示す
値をそれぞれ算出するレベル変動算出手段と、カラー液
晶表示器の液晶面の角度を調整する液晶角度調整手段
と、投影レンズを移動させて焦点調整するレンズ位置調
整手段と、各合焦確認領域毎の算出値に基づいて液晶角
度調整手段及びレンズ位置調整手段をそれぞれ制御する
合焦制御手段とを備え、全白の画像をスクリーンに投影
し、投影画面をカラーＴＶカメラにより一括撮像し、投
影画面の中央部分と周辺部分に予め設定した合焦確認領
域内の各撮像画素のＲ，Ｇ，Ｂ信号のレベル変動幅に基
づいて合焦制御を行うというものである。Further, Japanese Patent No. 2766229 (Japanese Patent Laid-Open No.
The method disclosed in “Color Projector Focusing Apparatus” of Japanese Patent Application Laid-Open No. H11-26083, focuses on the entire projection screen on a color projector screen, which enlarges an image of a color liquid crystal display with a projection lens and projects it on a screen. To make adjustments, image the projected screen of the screen and
A TV camera that outputs the G and B signals, respectively, and values indicating the fluctuations of the signal levels of the R, G, and B signals in each of the focus confirmation areas set in the center and the periphery of the projection screen are calculated. Level fluctuation calculating means, liquid crystal angle adjusting means for adjusting the angle of the liquid crystal surface of the color liquid crystal display, lens position adjusting means for adjusting the focus by moving the projection lens, and based on the calculated value for each focusing confirmation area Focusing control means for controlling the liquid crystal angle adjusting means and the lens position adjusting means, respectively, projecting an all-white image on the screen, capturing the projection screen at once with a color TV camera, and centrally and peripherally of the projection screen. The focus control is performed based on the level fluctuation width of the R, G, and B signals of each imaging pixel in the focus confirmation area set in advance in the portion.
【０００８】[0008]
【発明が解決しようとする課題】近年、プロジェクタ、
とりわけ高性能な可搬型のプロジェクタが出現し、ノー
トパソコンと併用することにより、手軽に移動できるプ
レゼンテーションの機会を創出している。その際、ノー
トパソコンのセッティングのみならず、プロジェクタの
セッティングも必要であるが、そのセッティングのため
の調整は時間と熟練を必要とし、使用者の負担となって
いた。In recent years, projectors,
In particular, high-performance portable projectors have emerged, and when used together with a notebook computer, they have created an opportunity for presentations that can be easily moved. At that time, not only the setting of the notebook computer but also the setting of the projector are necessary, but the adjustment for the setting requires time and skill, which is a burden on the user.
【０００９】特に可搬型のプロジェクタのセッティング
には、先ず、プロジェクタとスクリーンとを対向させて
床や机その他の固定台上に固定した後、画面の明るさの
調整、スクリーン上の映写画像のフォーカス調整を行う
外に、映写画像をスクリーンの画面枠まで拡大、縮小す
るズーム調整、及び投射光線がスクリーンに対して上
下、あるいは左右の方向から斜めに投射されることによ
る画面の台形歪の調整等を行う必要があるが、従来の自
動調整手段は略オートフォーカスに限られ、使用者が手
動でその他の全ての調整を行っており、そのための時間
と熟練を必要とした。In particular, in setting a portable projector, first, the projector and the screen are opposed to each other and fixed on a floor, a desk, or another fixed base, and then the brightness of the screen is adjusted and the focus of the projected image on the screen is adjusted. In addition to the above, zoom adjustment to enlarge and reduce the projected image to the screen frame of the screen, and adjustment of the trapezoidal distortion of the screen due to the projected light beam being projected obliquely from the top and bottom, or left and right directions, etc. Although it is necessary to perform such adjustment, the conventional automatic adjustment means is limited to substantially autofocus, and the user manually performs all other adjustments, which requires time and skill.
【００１０】本発明の目的は、入力信号を拡大してスク
リーン上に表示するプロジェクタ装置において、設置後
面倒な調整を行わずに、フォーカス調整・スクリーン枠
までのズーム調整・台形歪調整等の画面位置の調整を自
動的に実施することができるプロジェクタの自動画面位
置調整方法及び装置を提供することにある。An object of the present invention is to provide a projector device for enlarging an input signal and displaying the enlarged image on a screen without performing complicated adjustments after installation, such as focus adjustment, zoom adjustment up to a screen frame, and trapezoidal distortion adjustment. An object of the present invention is to provide a method and an apparatus for automatically adjusting a position of a projector screen that can automatically adjust the position.
【００１１】[0011]
【課題を解決するための手段】本発明は、装置内にモニ
タカメラを設け、投射画面をモニタすることにより、表
示に必要な各種調整を自動的に実施しようとするもので
ある。SUMMARY OF THE INVENTION According to the present invention, a monitor camera is provided in an apparatus, and various adjustments required for display are automatically performed by monitoring a projection screen.
【００１２】すなわち、本発明のプロジェクタの自動画
面位置調整装置は、焦点調整、ズーミング、俯仰角調
整、及びあおり操作の調整可能な投射レンズと、プロジ
ェクタ本体前面に設置され、スクリーン上の投射画面を
撮像するモニタカメラと、モニタカメラより入力された
映像信号の情報をディジタルデータに変換して記憶する
データ変換手段と、データ変換手段により変換されたデ
ィジタルデータを演算処理する演算手段と、プロジェク
タのフォーカス調整手段と、プロジェクタの投射レンズ
をズーミングするズーミング駆動手段と、モニタカメラ
より入力された撮像画面内のスクリーンの位置を検出す
るスクリーン位置検出手段と、スクリーン位置検出手段
により検出されたスクリーンの位置のデータによりプロ
ジェクタの投射光の光軸をスクリーンの中心に向ける投
射方向調整手段と、スクリーン位置検出手段により検出
されたスクリーンの位置のデータにより映写画面の台形
歪を調整する台形歪調整手段とを有する。That is, the automatic screen position adjusting device for a projector according to the present invention is provided with a projection lens capable of adjusting focus, zooming, elevation angle adjustment, and tilting operation, and is provided on the front surface of the projector main body to display a projection screen on a screen. A monitor camera for capturing an image, data conversion means for converting information of a video signal input from the monitor camera into digital data and storing the digital data, arithmetic means for arithmetically processing the digital data converted by the data conversion means, and a focus of the projector Adjusting means, zooming driving means for zooming the projection lens of the projector, screen position detecting means for detecting the position of the screen within the imaged screen input from the monitor camera, and the position of the screen detected by the screen position detecting means. The projection light of the projector is It has a projection direction adjustment means for directing the axis in the center of the screen, and a trapezoidal distortion adjustment means for adjusting the keystone distortion of the projection screen by the data in the position of the screen detected by the screen position detector.
【００１３】データ変換手段は、モニタカメラより入力
された映像信号から少なくとも各画素の走査線上の位置
及び輝度を表す情報をディジタルデータに変換して記憶
する。The data conversion means converts at least information representing the position and luminance of each pixel on a scanning line from the video signal input from the monitor camera into digital data and stores the digital data.
【００１４】また、フォーカス調整手段は、超音波を用
いた距離計測方式でもよい。The focus adjusting means may be a distance measuring method using ultrasonic waves.
【００１５】本発明のプロジェクタの自動画面位置調整
方法は、所定のテストパターンをプロジェクターからス
クリーン上に投射し、スクリーン上のテストパターンの
画像をモニタカメラで撮像し、撮像したモニタ画像のデ
ータを解析してプロジェクタのフォーカス調整を行い、
次に、テストパターンを全白の方形画面に変えてスクリ
ーン上に投射してモニタカメラで撮像し、モニタ画面内
におけるスクリーンの位置及び周辺端点を検出し、検出
したスクリーンの中心に向けて投射光の光軸を移動し、
撮像されたモニタ画面内のスクリーンの対向辺の長さを
比較して台形歪を検定し、検定結果により投射画面の台
形歪を調整する。In the automatic screen position adjusting method for a projector according to the present invention, a predetermined test pattern is projected from a projector onto a screen, an image of the test pattern on the screen is captured by a monitor camera, and data of the captured monitor image is analyzed. To adjust the focus of the projector,
Next, the test pattern is changed to an all-white square screen, projected on the screen, imaged by the monitor camera, the screen position and the peripheral end points in the monitor screen are detected, and the projected light is directed toward the center of the detected screen. Move the optical axis of
The trapezoidal distortion is verified by comparing the lengths of the opposite sides of the screen in the captured monitor screen, and the trapezoidal distortion of the projection screen is adjusted based on the verification result.
【００１６】台形歪の調整は、光学的なあおり装置を有
する投射レンズにより行うか、あるいは、投射レンズに
入力する表示画像データを補正することにより行うこと
ができる。The trapezoidal distortion can be adjusted by a projection lens having an optical tilting device or by correcting display image data input to the projection lens.
【００１７】[0017]
【発明の実施の形態】次に、本発明の実施の形態につい
て図面を参照して説明する。Next, embodiments of the present invention will be described with reference to the drawings.
【００１８】図１は、本発明のプロジェクタの自動画面
位置調整装置の1実施例の構成を示すブロック図、図２
は、本発明の１実施例のフローチャート、図３は、フォ
ーカス調整用テストパターンの１実施例、図４は、ピン
ト調整の説明図、図５は、映写画面位置調整の説明図で
ある。FIG. 1 is a block diagram showing the configuration of an embodiment of an automatic screen position adjusting device for a projector according to the present invention.
FIG. 3 is a flowchart of an embodiment of the present invention, FIG. 3 is an embodiment of a focus adjustment test pattern, FIG. 4 is an explanatory diagram of focus adjustment, and FIG. 5 is an explanatory diagram of projection screen position adjustment.
【００１９】図１において、本実施例の自動画面位置調
整装置は、焦点調整、ズーミング、俯仰角調整、及びあ
おり作用の調整可能な投射レンズ３と、プロジェクタ本
体前面に設置されたモニタカメラ４と、モニタカメラ４
より入力された映像のフォーカスの最良点を検出するフ
ォーカス検出部５と、モニタ画面内のスクリーンの位置
を検出するエッジ検出部６と、フォーカス調整値、ズー
ミング調整値、及び台形歪調整値を算出する演算部のＣ
ＰＵ７と、投射レンズ３を調整して、フォーカス調整、
ズーミング調整、俯仰角調整、及び台形歪調整を行う表
示駆動部８と、入力画像を表示データに変換して表示駆
動部８に出力する入力画像データ変換部９とを備え、ス
クリーン１に対向して固定されるプロジェクタ２によっ
て構成される。Referring to FIG. 1, an automatic screen position adjusting apparatus according to the present embodiment includes a projection lens 3 capable of adjusting focus, zooming, elevation angle adjustment, and tilting operation, and a monitor camera 4 installed on the front of the projector main body. , Monitor camera 4
A focus detection unit 5 for detecting the best point of the focus of the input image, an edge detection unit 6 for detecting the position of the screen in the monitor screen, and calculating a focus adjustment value, a zooming adjustment value, and a trapezoidal distortion adjustment value. Calculation unit C
By adjusting the PU 7 and the projection lens 3, focus adjustment,
A display drive unit for performing zooming adjustment, elevation angle adjustment, and trapezoidal distortion adjustment; and an input image data conversion unit for converting an input image into display data and outputting the display data to the display drive unit. And is fixed by a projector 2.
【００２０】次に、本実施例の動作について図２により
説明する。Next, the operation of this embodiment will be described with reference to FIG.
【００２１】先ず、使用者はプロジェクタ２の本体をス
クリーン１に略正対させて固定した後、自動画面位置調
整装置を起動する。First, after the user fixes the main body of the projector 2 so as to substantially face the screen 1, the user activates the automatic screen position adjusting device.
【００２２】自動画面位置調整装置は、プロジェクタ各
部の設定値を初期化した後（ステップＳ１）、所定のテ
ストパターンをプロジェクタ２の投射レンズ３スから投
射する（ステップＳ２）。このテストパターンは、例え
ば図３に示すように、白色または透明な平面上にモニタ
カメラの走査方向に対して垂直な黒色の直線を複数本並
べて、水平方向の走査に対して光量変化の振幅や周波数
成分が高くなるものがよい。After initializing the set values of the respective sections of the projector (step S1), the automatic screen position adjusting device projects a predetermined test pattern from the projection lens 3 of the projector 2 (step S2). For example, as shown in FIG. 3, a plurality of black straight lines perpendicular to the scanning direction of the monitor camera are arranged on a white or transparent plane, and the test pattern has an amplitude of a light amount change and a horizontal scanning. It is preferable that the frequency component be high.
【００２３】プロジェクタから投射されたテストパター
ンは、スクリーン及びスクリーンの背後の壁面等により
反射される。モニタカメラは、この反射光を受光して投
射画面を撮像する（ステップＳ３）。The test pattern projected from the projector is reflected by the screen and the wall behind the screen. The monitor camera receives the reflected light and captures an image of the projection screen (step S3).
【００２４】フォーカス検出部５は、撮像したモニタ画
像のデータを解析して、水平信号の振幅の波高値の高い
所、あるいはフーリエ級数展開による高次の周波数成分
の有無検出などにより、フォーカスの最良点を検出する
（ステップＳ４）。この場合、求めるフォーカスの最良
点は、撮像画面の中央付近の１ヶ所に合わせることこと
も、あるいは周辺部を含めて画面全体の平均的な焦点を
最良とすることもできる。The focus detecting section 5 analyzes the data of the captured monitor image and detects the best focus by detecting the presence of a high peak value of the amplitude of the horizontal signal or the presence or absence of a high-order frequency component by Fourier series expansion. A point is detected (step S4). In this case, the best point of the focus to be obtained can be set to one point near the center of the imaging screen, or the average focus of the entire screen including the peripheral part can be made the best.
【００２５】フォーカスの最良点を検出すると、次に投
射レンズのフォーカス調整を行って（ステップＳ５）、
その後、全白の画面をスプロジェクタからスクリーンの
方向に向けて投射し、その映像をモニタする（ステップ
Ｓ６）。When the best point of focus is detected, the focus of the projection lens is adjusted (step S5).
Thereafter, an all-white screen is projected from the projector in the direction of the screen, and the image is monitored (step S6).
【００２６】次に、モニタ画面の水平走査線上で反射光
の輝度が大きく変化する点を検出し、スクリーンの端点
としてモニタ画面内のスクリーンの位置を検出する（ス
テップＳ７）。Next, a point at which the luminance of the reflected light greatly changes on the horizontal scanning line of the monitor screen is detected, and the position of the screen within the monitor screen is detected as an end point of the screen (step S7).
【００２７】次に、プロジェクタの投射レンズをズーミ
ングして投射画面がスクリーンの端点に達するまで投射
範囲を縮小、または拡大する（ステップＳ８）。Next, the projection lens of the projector is zoomed to reduce or enlarge the projection range until the projection screen reaches the end point of the screen (step S8).
【００２８】次に、モニタ画面内でスクリーンの映像が
画面の中央に位置するように、プロジェクタ本体前面の
向き、または投射レンズの俯仰角を調整する（ステップ
Ｓ９）。これによって投射レンズの光軸がスクリーンの
中心に向けられ、スクリーンの中央に映像が投射され
る。Next, the orientation of the front surface of the projector main body or the elevation angle of the projection lens is adjusted so that the screen image is positioned at the center of the screen within the monitor screen (step S9). Thereby, the optical axis of the projection lens is directed to the center of the screen, and an image is projected on the center of the screen.
【００２９】次に、撮像されたモニタ画面内のスクリー
ンの対向辺の長さを比較して台形歪を検定し、検定結果
により投射画面の台形歪を調整する（ステップＳ１
０）。モニタカメラの撮像画面内におけるスクリーンの
位置の検出は、フォーカス調整実施後に全白画面をプロ
ジェクタからスクリーンの方向に向けて投射し、プロジ
ェクタの投射レンズをズーミングして、投射範囲を次第
に縮小、または拡大しながらそのモニタ画面の全光量を
測定し、スクリーンの背景からの反射光の影響が消え
て、モニタ画面全体の光量が略一定となる境界点を検出
したとき、ズーミングを停止してその境界点の位置をス
クリーンの端点としてスクリーンの位置を検出し、検出
されたスクリーンの周囲の内外の明るさの差を上下、及
び左右の対向する辺ごとに比較して、投影画像の周囲に
発生する台形歪を検定してもよい。Next, trapezoidal distortion is verified by comparing the lengths of the opposite sides of the screen in the captured monitor screen, and the trapezoidal distortion of the projection screen is adjusted based on the verification result (step S1).
0). To detect the position of the screen within the image screen of the monitor camera, after performing focus adjustment, project an all-white screen from the projector toward the screen, zoom the projection lens of the projector, and gradually reduce or enlarge the projection range While measuring the total light amount of the monitor screen and detecting the boundary point where the influence of the reflected light from the screen background disappears and the light amount of the entire monitor screen becomes almost constant, zooming is stopped and the boundary point is stopped. The position of the screen is detected using the position of the screen as the end point of the screen, and the difference in brightness between the inside and outside around the detected screen is compared for each of the upper, lower, left and right opposing sides, and a trapezoid generated around the projected image The distortion may be tested.
【００３０】台形歪の調整は、ＣＲＴプロジェクタで
は、投射画像の振幅電圧範囲を画面の場所により変える
ことにより調整できる。In the case of a CRT projector, the trapezoidal distortion can be adjusted by changing the amplitude voltage range of the projected image depending on the location on the screen.
【００３１】ＬＣＤプロジェクタでは、投射レンズの位
置調整（レンズシフト）を行って「あおり」効果を用い
るか、あるいは電気的にデータを補間することにより補
正を行うことができる。In an LCD projector, correction can be made by adjusting the position of the projection lens (lens shift) and using the "tilt" effect, or by electrically interpolating data.
【００３２】ＣＰＵ７は、これらの補正のためのデータ
をエッジ検出データから算出して表示駆動部６へ送り、
スクリーン枠と表示画像とを合致させる。The CPU 7 calculates the data for these corrections from the edge detection data and sends the data to the display drive unit 6.
Match the screen frame with the display image.
【００３３】また、この実施例では、フォーカス調整に
モニタカメラを使用したが、超音波によるフォーカス調
整を行っても良い。Further, in this embodiment, the monitor camera is used for the focus adjustment, but the focus adjustment using ultrasonic waves may be performed.
【００３４】本実施例は、プロジェクタの前面にモニタ
カメラを設けて、プロジェクターから投射したスクリー
ン上のテストパターンをモニタカメラで撮像して解析
し、解析結果により、プロジェクタのフォーカス調整、
スクリーン枠までのズーミング調整、及び台形歪調整を
自動的に行うことができ、従来必要とされた設置後の面
倒な調整を行わなくともよい。In this embodiment, a monitor camera is provided on the front of the projector, and a test pattern on the screen projected from the projector is imaged and analyzed by the monitor camera.
Zooming adjustment up to the screen frame and trapezoidal distortion adjustment can be automatically performed, and it is not necessary to perform the conventionally required complicated adjustment after installation.
【００３５】[0035]
【発明の効果】上述のように本発明は、モニタカメラに
よりプロジェクターから投射したスクリーン上のテスト
パターンを撮像して、そのデータを解析し、解析結果に
よりプロジェクタのフォーカス調整の外にも、スクリー
ン枠までのズーミング調整、及び台形歪調整を自動的に
行うことにより、従来必要とされていた設置後の面倒な
調整を行わずに、プロジェクタの画面位置を未熟練者で
も短時間に、しかも容易に調整することが出来る効果が
ある。As described above, the present invention captures a test pattern on a screen projected from a projector by a monitor camera, analyzes the data, analyzes the data, and adjusts the screen frame in addition to the focus adjustment of the projector based on the analysis result. By automatically performing the zooming adjustment and trapezoidal distortion adjustment up to this point, the screen position of the projector can be adjusted quickly and easily even by unskilled persons without the troublesome adjustment after installation, which was required conventionally. There is an effect that can be adjusted.
【図１】本発明の自動画面位置調整装置の1実施例の構
成を示すブロック図である。FIG. 1 is a block diagram showing the configuration of an embodiment of an automatic screen position adjusting device according to the present invention.
【図２】本発明のプロジェクタの自動画面位置調整方法
の１実施例のフローチャートである。FIG. 2 is a flowchart of an embodiment of an automatic screen position adjusting method for a projector according to the present invention.
【図３】フォーカス調整用テストパターンの１実施例で
ある。FIG. 3 is an example of a focus adjustment test pattern.
【図４】ピント調整の説明図である。FIG. 4 is an explanatory diagram of focus adjustment.
【図５】映写画面位置調整の説明図である。FIG. 5 is an explanatory diagram of projection screen position adjustment.
１． スクリーン ２． プロジェクタ ３． 投射レンズ ４． モニタカメラ ５． フォーカス検出部 ６． エッジ検出部 ７． ＣＰＵ ８． 表示駆動部 ９． 入力画像データ変換部 Ｓ１〜Ｓ１０ ステップ 1. Screen 2. Projector 3. 3. Projection lens Monitor camera 5. Focus detection unit 6. Edge detection section 7. CPU8. Display drive unit 9. Input image data conversion unit S1 to S10 Step
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11041428AJP2000241874A (en) | 1999-02-19 | 1999-02-19 | Method and device for automatically adjusting screen position for projector |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11041428AJP2000241874A (en) | 1999-02-19 | 1999-02-19 | Method and device for automatically adjusting screen position for projector |
| Publication Number | Publication Date |
|---|---|
| JP2000241874Atrue JP2000241874A (en) | 2000-09-08 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11041428APendingJP2000241874A (en) | 1999-02-19 | 1999-02-19 | Method and device for automatically adjusting screen position for projector |
| Country | Link |
|---|---|
| JP (1) | JP2000241874A (en) |
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