JP2004229260A - Digital camera for determining and recording top and bottom of image file in accordance with tilt of imaging device in photographing - Google Patents

Digital camera for determining and recording top and bottom of image file in accordance with tilt of imaging device in photographing Download PDF

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JP2004229260A
JP2004229260A JP2003054962A JP2003054962A JP2004229260A JP 2004229260 A JP2004229260 A JP 2004229260A JP 2003054962 A JP2003054962 A JP 2003054962A JP 2003054962 A JP2003054962 A JP 2003054962A JP 2004229260 A JP2004229260 A JP 2004229260A
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camera
image
image file
photographer
shutter button
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JP2003054962A
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Japanese (ja)
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Tomohide Hosoya
知秀 細矢
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Abstract

<P>PROBLEM TO BE SOLVED: To rightly record top and bottom of an object in an image file even when a photographer performs photographing with a camera in an longitudinal attitude. <P>SOLUTION: When the photographer operates an operating part 107 of the camera to capture an image, a device 104 for detecting an attitude of the camera measures inclinations of imaging devices in an optical system input part and a compression part 102. The result is then used to determine and record top and bottom of the image file on an image recording medium 109. Besides, the photographer uses the operating part 107 and an information display part 106 to determine the top and bottom direction of the image file from a selection menu of photographic information. Otherwise, in addition to a shutter button to be used for the lateral attitude of the camera, a shutter button dedicated to the longitudinal attitude is prepared in the operating part 107 and when the photographer presses the shutter button for the longitudinal attitude, the image file is also recorded in the similar top and bottom direction. These camera operations are all controlled by running a program recorded in an auxiliary storage device 105 via a primary storage device 103 and a CPU 101 for controlling the camera. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】本発明は,画像などをデジタル化して記録するデジタルカメラなどの記録装置及び記録方法に関する.
【0002】
【従来の技術】デジタルカメラは撮影した映像を画像ファイルの形でカメラ内の記憶装置に保存する.このとき,画像ファイルはカメラの通常撮影される天地の方向に固定されて記録される.
【0003】
【発明が解決しようとする課題】そのため,例えば撮影者がカメラを右へ90度倒して構えて撮影した場合,被写体は画像ファイル上で左へ90度倒れた形で記録されることになる.このことは,画像ファイルを紙などにプリントアウトして写真として鑑賞する場合には問題ない.しかし,画像ファイルをコンピュータなどで閲覧する場合,画像処理ソフトなどを利用して倒れている被写体の画像を回転させる作業が必要であり,不便である.
【0004】
【課題を解決するための手段】本発明によるカメラにおいては,カメラ(撮像素子)の撮影時の傾きに応じて画像ファイルの天地の方向を決定して,画像を記録する機能を有する.
【0005】画像の記録方法としては,記録する画像データの配列の行と列を入れ替える方法が考えられる.その他に撮影時に検出した撮像素子の傾きに応じて,画像ファイルが斜めに傾いたように加工して記録する方法も考えられる.また,記録する画像データの配列を入れ替えるのではなく,画像ファイルに撮影時の撮像素子の傾きの情報を付加して,コンピュータで閲覧するときのビューアーソフトが自動的に画像を回転させて表示する方法も考えられる.
【0006】請求項1記載のカメラにおいては,カメラが自動的に撮影時のカメラの傾きを検出して,記録する画像の回転量を決定する機能を有するものとする.自動的にカメラの撮影時の傾きを検出するためには,カメラの傾斜を検出する装置を組み込む.傾斜角検出の方法には,気泡管を利用したものやジャイロを利用したものや差動トランスを利用した角度検出方法などがある.
【0007】請求項2記載のカメラにおいては,撮影者の判断で画像をファイルに保存するときの天地方向を選択する機能を有する.この天地方向を選択する方法としては,カメラの撮影モードを設定するためのメニュー画面によって設定するものでもよく,一般的な構え方で撮影するときのシャッターボタンとは別にカメラを90度倒して構えて撮影するときのシャッターボタンを用意しておき,そのボタンが使われた場合には画像の天地が90度倒れるという仕組みにしておいてもよい.
【0008】
【発明の実施形態】以下,本発明の実施形態の例を図面に基づき説明する.図1は,本発明の一実施形態であるデジタルカメラの構成を示したブロック図である.なお,本実施形態に直接関係しない光学系入力部,例えばレンズ,絞り,シャッター,撮像素子,A/D変換機,色信号処理回路などは,図示を簡単にして102に表してある.また補助記憶装置105は,RAM,ROM,不揮発性メモリーなどデジタルカメラ内に組み込まれて撮影情報などを一時的または継続的に保持する装置を表す.
【0009】本実施形態のデジタルカメラは,少なくともCPU101,光学系入力部及び圧縮符号化部102,一次記憶装置(メモリー)103,補助記憶装置(ROM,RAM,不揮発性メモリーなど)105,情報表示部106,操作部(シャッターボタン,メニューボタンなど)107,記録媒体I/F108,画像記録媒体109により構成される.請求項1記載のデジタルカメラの実施形態では,カメラの姿勢を検出するための装置(傾斜計)104も組み込まれている.
【0010】請求項1記載のデジタルカメラは,撮影者がカメラを構えて操作部107の一つであるシャッターボタンを押したときに,光学系入力部及び圧縮符号化部102とメモリー103で画像データを処理する.傾斜計104は撮影者がシャッターボタンを押したときの光学系入力部にある撮像素子の傾きを自動的に検出し,画像データはその傾きに応じて天地を決定して配列される.
【0011】画像データの天地の決定の方法は,図2のような考え方による.すなわち本実施形態では,デジタルカメラ201の中に撮像素子202とともに傾斜計203を組み込んでおく.ここで撮像素子204はレンズ方向をx軸,撮像素子の通常の横方向をy軸,縦方向をz軸としたC−xyz座標系をもっているものとする.傾斜計203は鉛直軸をZ軸,Z軸に直角な水平面内のレンズ方向をX軸,Z−X面に直角な方向をY軸としたC−XYZ座標系205に対する撮像素子204の傾斜角を計ることができるものとする.画像データの天地を決定するために求める撮像素子の傾斜角としては,少なくとも水平面207に対するy軸の傾き209を求めればよい.この計測は撮影ごとに行い,y軸の傾き209が小さい場合には通常の画像データを記録するデータ配列(画像データを横長の方向で天地を決定した画像ファイル)210で画像を記録する.この傾き209が大きい場合,例えば45度以上である場合には,通常の画像データを記録するデータ配列に対して90度回転したデータ配列(画像データを縦長の方向で天地を決定した画像ファイル)211で画像を記録する.
【0012】本請求項目の実施形態では,データ配列を0度,90度,180度,270度と90度づつ回転させることが一般的と考えられるが,水平面207に対するy軸の傾き209をそのまま反映させて,斜めに倒れた画像データファイルを作成してもよい.また,データ配列を変更するのではなく,画像ファイルに傾斜計の計測値も撮影情報として書き込み,コンピュータで閲覧する際は,ビューアーソフトが自動的に画像を回転させて表示できるようにしてもよい.
【0013】このようにして処理された画像データは,記憶媒体I/F108を介して画像記録媒体109に書き込まれる.このとき,画像一枚につき一個の画像データファイルが生成される.なお,画像記憶媒体109は,脱着可能なメモリースティックのようなものでもよく,カメラ内に固定されて脱着できないハードディスクのようなものでもよい.カメラからコンピュータに取り込む場合は,脱着可能な画像記録媒体はそれをコンピュータのインターフェースに接続し,脱着できない画像記録媒体はカメラ本体にUSBなどの通信インターフェースを用意してコンピュータと接続すればよい.
【0014】以上のような撮影記録や通信動作の制御はCPU101が行っている.その撮影記録や通信のためのプログラムは,補助記憶装置105に格納されており随時呼び出されて使われる.
【0015】請求項2記載のデジタルカメラでは,撮影された画像ファイルの天地は,撮影者の意図により決定される.このとき撮影者の意図の反映のさせ方としては,カメラの撮影モードを設定するプログラムにおいて情報表示部106及び操作部107を使って画像ファイルのどの方向を天地にするか設定できるものとする.
【0016】また同じく請求項2記載のデジタルカメラでは,図3のデジタルカメラ301に示されるように,カメラを通常のもち方で構えたとき(ここでは横に構えたとき)に利用するシャッターボタン302とは別に,カメラを90度倒して構えたとき(ここでは縦に構えたとき)の専用のシャッターボタン303を用意してもよい.このカメラでは撮影者が横に構えたときに利用するシャッターボタン302を使った場合,画像ファイルの天地は304のようになる.一方縦に構えたとき専用のシャッターボタン303を使った場合,画像ファイルの天地は305となるようにする.
【0017】
【発明の効果】請求項1,2に記載した発明によれば,デジタルカメラによる画像ファイルは撮影者の意図した向きそのままで記録することができ,フォトレタッチソフトなどで画像ファイルの回転させるなどの作業が不要になる.
【0018】
【図面の簡単な説明】
【図1】請求項1および2の実施形態の例におけるデジタルカメラの構成を示したブロック図である.
【図2】請求項1の実施形態の例におけるデジタルカメラの受光面の傾きを検出して画像ファイルの天地を決定する方法を示した図である.
【図3】請求項2の実施形態の例におけるデジタルカメラと被写体,画像ファイルの関係を示した斜視図である.
【符号の説明】
101 カメラを制御するCPU(中央演算ユニット)
102 光学系入力部及び圧縮符号化部
103 一次記憶装置
104 カメラの姿勢を検出するための装置(傾斜計)
105 補助記憶装置(ROM,RAM,不揮発性メモリーなど)
106 情報表示部
107 操作部(シャッターボタン,メニューボタンなど)
108 記憶媒体I/F
109 画像記録媒体
201 デジタルカメラ
202 撮像素子
203 傾斜計
204 撮像素子
205 傾斜系の座標軸(C−XYZ)
206 撮像素子の座標軸(C−xyz)
207 水平面(X−Y面)
208 撮像素子とその座標系(C−yz)
209 撮像素子の水平面に対する傾き
210 画像データを横長の方向で天地を決定した画像ファイル
211 画像データを縦長の方向で天地を決定した画像ファイル
301 90度回転して撮影するデジタルカメラ
302 通常の構え方で使うシャッターボタン
303 カメラを90度倒して構えたときに使うシャッターボタン
304 撮像素子上の映像又は302を使ったときに記録される画像ファイル
305 303を使ったときに記録される画像ファイル
306 被写体
307 撮影される範囲
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus such as a digital camera for digitizing and recording images and the like, and a recording method.
[0002]
2. Description of the Related Art A digital camera saves a photographed image in a storage device in the camera in the form of an image file. At this time, the image file is recorded fixed in the direction of the camera's normal shooting position.
[0003]
Therefore, for example, when the photographer holds the camera 90 degrees to the right and shoots the image, the subject is recorded in the image file as being tilted 90 degrees to the left. This is not a problem when the image file is printed out on paper and viewed as a photograph. However, it is inconvenient to browse image files on a computer, etc., because it is necessary to rotate the image of the falling subject using image processing software.
[0004]
The camera according to the present invention has a function of determining the direction of the top and bottom of an image file according to the inclination of the camera (image sensor) at the time of shooting and recording the image.
As a method of recording an image, a method of exchanging rows and columns of an array of image data to be recorded can be considered. In addition, there is a method to record the image file as if it were slanted according to the tilt of the image sensor detected at the time of shooting. Also, instead of changing the arrangement of the image data to be recorded, information on the inclination of the image sensor at the time of shooting is added to the image file, and the viewer software automatically rotates and displays the image when browsing with a computer. A method is also conceivable.
The camera according to the first aspect has a function of automatically detecting the inclination of the camera at the time of photographing and determining the rotation amount of the image to be recorded. In order to automatically detect the tilt of the camera when shooting, a device that detects the tilt of the camera is incorporated. Methods for detecting the tilt angle include those using a bubble tube, those using a gyro, and those using a differential transformer.
The camera according to the second aspect has a function of selecting a vertical direction when an image is stored in a file at the discretion of the photographer. As a method of selecting the top and bottom direction, a method of setting by a menu screen for setting a photographing mode of the camera may be used. In addition to a shutter button for photographing in a general posture, the camera is tilted by 90 degrees and held. You can prepare a shutter button when shooting with the camera, and if that button is used, the top and bottom of the image will fall 90 degrees.
[0008]
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a digital camera according to an embodiment of the present invention. Note that optical system input units that are not directly related to the present embodiment, such as a lens, an aperture, a shutter, an image sensor, an A / D converter, and a color signal processing circuit, are indicated by 102 in a simplified manner. The auxiliary storage device 105 is a device such as a RAM, a ROM, and a nonvolatile memory that is incorporated in a digital camera and temporarily or continuously stores photographing information and the like.
The digital camera according to the present embodiment includes at least a CPU 101, an optical system input unit and a compression encoding unit 102, a primary storage device (memory) 103, an auxiliary storage device (ROM, RAM, nonvolatile memory, etc.) 105, an information display. It comprises a unit 106, an operation unit (shutter button, menu button, etc.) 107, a recording medium I / F 108, and an image recording medium 109. In the embodiment of the digital camera according to the first aspect, a device (inclinometer) 104 for detecting the posture of the camera is also incorporated.
In the digital camera according to the present invention, when the photographer holds the camera and presses a shutter button, which is one of the operation units 107, the image is stored in the optical system input unit and the compression encoding unit 102 and the memory 103. Process the data. The inclinometer 104 automatically detects the inclination of the image sensor in the optical system input unit when the photographer presses the shutter button, and the image data is arranged by determining the top and bottom according to the inclination.
The method of determining the top and bottom of image data is based on the concept shown in FIG. That is, in the present embodiment, the inclinometer 203 is incorporated in the digital camera 201 together with the image sensor 202. Here, it is assumed that the image sensor 204 has a C-xyz coordinate system in which the lens direction is the x axis, the normal horizontal direction of the image sensor is the y axis, and the vertical direction is the z axis. The inclinometer 203 is a tilt angle of the image sensor 204 with respect to a C-XYZ coordinate system 205 in which a vertical axis is a Z axis, a lens direction in a horizontal plane perpendicular to the Z axis is an X axis, and a direction perpendicular to the ZX plane is a Y axis. Can be measured. As the inclination angle of the image sensor to determine the top and bottom of the image data, at least the inclination 209 of the y-axis with respect to the horizontal plane 207 may be obtained. This measurement is performed for each photographing, and when the inclination 209 of the y-axis is small, an image is recorded in a data array (an image file in which image data is determined in the horizontal direction) 210 for recording normal image data. When the inclination 209 is large, for example, 45 degrees or more, a data array rotated by 90 degrees with respect to a data array for recording normal image data (an image file in which image data is determined in a vertically long direction) At 211, an image is recorded.
In the embodiment of the present invention, it is generally considered that the data array is rotated by 90 degrees at 0, 90, 180, and 270 degrees, but the inclination 209 of the y-axis with respect to the horizontal plane 207 is kept as it is. You can create an image data file that is tilted obliquely by reflecting it. Also, instead of changing the data array, the measured values of the inclinometer may be written in the image file as photographing information, and the viewer software may automatically rotate and display the image when browsing with a computer. .
The image data processed in this way is written to the image recording medium 109 via the storage medium I / F 108. At this time, one image data file is generated for each image. The image storage medium 109 may be a removable memory stick or a hard disk that is fixed in the camera and cannot be removed. When taking in the image from the camera to the computer, the detachable image recording medium can be connected to the computer interface, and the non-removable image recording medium can be connected to the computer by preparing a communication interface such as USB on the camera body.
The control of the photographing recording and the communication operation as described above is performed by the CPU 101. The program for the photographing record and communication is stored in the auxiliary storage device 105, and is called and used at any time.
In the digital camera according to the second aspect, the top and bottom of a captured image file is determined by the photographer's intention. At this time, as a method of reflecting the photographer's intention, it is assumed that a program for setting the photographing mode of the camera can use the information display unit 106 and the operation unit 107 to set which direction of the image file is turned upside down.
Also, in the digital camera according to the second aspect, as shown in the digital camera 301 in FIG. 3, a shutter button used when the camera is held in a normal manner (here, when the camera is held horizontally). Apart from 302, a dedicated shutter button 303 may be prepared when the camera is tilted and held by 90 degrees (here, when the camera is held vertically). In this camera, when the photographer uses the shutter button 302 which is used when the photographer holds the camera horizontally, the top and bottom of the image file are as shown in 304. On the other hand, when the camera is held vertically and the dedicated shutter button 303 is used, the top and bottom of the image file are set to 305.
[0017]
According to the first and second aspects of the present invention, an image file by a digital camera can be recorded in the same direction as the photographer intended, and the image file can be rotated by photo retouching software or the like. No work is required.
[0018]
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a digital camera according to the first and second embodiments.
FIG. 2 is a diagram showing a method for determining the top and bottom of an image file by detecting the inclination of a light receiving surface of a digital camera in the example of the first embodiment.
FIG. 3 is a perspective view showing a relationship between a digital camera, a subject, and an image file in the example of the second embodiment.
[Explanation of symbols]
101 CPU (Central Processing Unit) that controls the camera
102 Optical system input unit and compression encoding unit 103 Primary storage device 104 Device for detecting the attitude of camera (inclinometer)
105 Auxiliary storage device (ROM, RAM, nonvolatile memory, etc.)
106 Information display unit 107 Operation unit (shutter button, menu button, etc.)
108 Storage medium I / F
109 Image recording medium 201 Digital camera 202 Image sensor 203 Inclinometer 204 Image sensor 205 Coordinate axis of tilt system (C-XYZ)
206 Coordinate axis of image sensor (C-xyz)
207 Horizontal plane (XY plane)
208 Image sensor and its coordinate system (C-yz)
209 Inclination of image sensor with respect to horizontal plane 210 Image file 211 in which image data is determined horizontally and vertically Image file 301 in which image data is determined vertically and vertically Digital camera 302 which rotates and shoots image data by 90 degrees 302 Shutter button 303 to be used in the camera Shutter button 304 to be used when the camera is tilted at 90 degrees and image file on the image sensor or image file 305 recorded when using 302 Image file 306 recorded when using 303 Subject 307 Range to be photographed

Claims (2)

カメラが撮影時に撮像素子の傾きを自動的に計測し,計測された傾きの度合いに応じて,映像を画像ファイルに保存するときの天地を決定し,記録するカメラ.A camera that automatically measures the tilt of the image sensor when the camera shoots, determines the top and bottom when saving the video to an image file, and records it according to the measured degree of tilt. 撮影者が任意に,記録する映像の画像ファイルの天地方向を設定できるカメラ.A camera that allows the photographer to arbitrarily set the orientation of the image file of the video to be recorded.
JP2003054962A 2003-01-25 2003-01-25 Digital camera for determining and recording top and bottom of image file in accordance with tilt of imaging device in photographing Pending JP2004229260A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101938615B (en) * 2009-06-29 2013-02-13 深圳爱意无线科技有限公司 Digital video recorder and digital video system
JP2016076843A (en) * 2014-10-07 2016-05-12 キヤノン株式会社 Imaging apparatus, control method therefor, program and recording medium
JP5983409B2 (en) * 2010-09-22 2016-08-31 日本電気株式会社 Imaging apparatus, image transfer method, and program
US11528422B2 (en) 2007-09-19 2022-12-13 Ricoh Company, Ltd. Imaging apparatus capable of detecting and displaying information with respect to an incline thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11528422B2 (en) 2007-09-19 2022-12-13 Ricoh Company, Ltd. Imaging apparatus capable of detecting and displaying information with respect to an incline thereof
CN101938615B (en) * 2009-06-29 2013-02-13 深圳爱意无线科技有限公司 Digital video recorder and digital video system
JP5983409B2 (en) * 2010-09-22 2016-08-31 日本電気株式会社 Imaging apparatus, image transfer method, and program
JP2016076843A (en) * 2014-10-07 2016-05-12 キヤノン株式会社 Imaging apparatus, control method therefor, program and recording medium

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