JP2007267035A - Image recording apparatus - Google Patents

Image recording apparatus Download PDF

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JP2007267035A
JP2007267035A JP2006089545A JP2006089545A JP2007267035A JP 2007267035 A JP2007267035 A JP 2007267035A JP 2006089545 A JP2006089545 A JP 2006089545A JP 2006089545 A JP2006089545 A JP 2006089545A JP 2007267035 A JP2007267035 A JP 2007267035A
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image
camera shake
amount
recording apparatus
shake
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JP4641958B2 (en )
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Makoto Hirata
誠 平田
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Sanyo Electric Co Ltd
三洋電機株式会社
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<P>PROBLEM TO BE SOLVED: To select whether camera shake correction is performed or not in an image recording apparatus capable of recording an image acquired in an imaging element 8 according to a user operation into a record medium 5. <P>SOLUTION: The image recording apparatus comprises a camera shake micro computer 2 for performing the camera shake correction to an image by detecting the camera shake at the time of user operation. The camera shake micro computer 2 is designed to calculate the amount of the camera shake at the time of user operation, to compare the calculated amount of the camera shake with a predetermined threshold, then notification about it is made by a display 6 when the mount of the camera shake is larger than the predetermined threshold. Then the camera shake correction is performed to the image when a user indication that the camera shake correction is carried out in accordance with the notification is issued. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、デジタルカメラの如く、ユーザ操作に応じて画像を撮影し、該画像を記録媒体に記録することが可能な画像記録装置に関するものである。 The present invention is a digital camera as to capture an image in response to a user operation, the present invention relates to an image recording apparatus capable of recording the image on a recording medium.

デジタルカメラにおいては、ユーザがシャッター釦を操作したときの手ぶれを検出して、そのぶれ量に応じて撮影画像に手ぶれ補正を施し、手ぶれ補正の施された画像を記録媒体に記録することが可能となっている(特許文献1、2、3参照)。 In the digital camera detects the camera shake when the user operates the shutter button is subjected to camera shake correction to the captured image in accordance with the shake amount, it is possible to record an image subjected to the image stabilization on a recording medium It has become (see Patent documents 1, 2 and 3).
この様なデジタルカメラによれば、初心者によっても常にぶれのない画像を記録することが出来る。 According to such a digital camera, it is possible to record the image not always blur even by beginners.
特開2005−338323号公報 JP 2005-338323 JP 特開2000−298300号公報 JP 2000-298300 JP 特開平07−226905号公報 JP 07-226905 discloses

しかしながら、従来の手ぶれ補正機能付きのデジタルカメラにおいては、手ぶれが検出されたとき、ユーザの意思に拘わらず常に手ぶれ補正が施されることになるため、ユーザが意図的に手ぶれを発生させて画像に特殊効果を付与したい場合等において、手ぶれ補正を施すか否かの選択を行なうことが出来ない問題があった。 However, in the conventional digital camera with an image stabilization function, when the camera shake is detected, since that would image stabilization always regardless the user's intention is performed, so the user can intentionally generate shake image in case you want to grant the special effects, etc., there has been a problem that can not make a selection of whether to perform the hand-shake correction.

そこで本発明の目的は、撮影画像毎にユーザが手ぶれ補正を施すか否かの選択を行なうことが可能な画像記録装置を提供することである。 Accordingly, an object of the present invention is to provide an image recording apparatus capable of performing a selection of whether the user is to perform image stabilization for each captured image.

本発明に係る画像記録装置は、ユーザ操作に応じて画像を撮影し、該画像を記録媒体に記録することが可能であると共に、ユーザ操作時の手ぶれを検出してぶれ量に応じて画像に手ぶれ補正を施すことが可能であって、 The image recording apparatus according to the present invention captures an image in accordance with a user operation, together it is possible to record the image on a recording medium, the image in accordance with the amount of blur by detecting the shake during user operation It is capable of performing the anti-shake,
ユーザ操作時のぶれ量を算出する演算手段と、 Calculating means for calculating the amount of blur during user operation,
算出されたぶれ量を所定の閾値と比較して、ぶれ量が所定の閾値よりも大きいとき、その旨を報知する報知手段と、 The calculated shake amount is compared with a predetermined threshold value, when the blurring amount is larger than a predetermined threshold value, and informing means for informing to that effect,
前記報知に応じて手ぶれ補正を施すべき旨のユーザ指示が発せられたとき、画像に手ぶれ補正を施す補正手段とを具えている。 When a user instruction to be subjected to image stabilization in accordance with the notification is issued, and comprises a correcting means for performing image stabilization in image.

上記本発明の画像記録装置によれば、画像記録時の操作によって大きな手ぶれが発生したとき、その旨が報知されるので、ユーザは、手ぶれの発生を認識することが出来、その時点で画像に手ぶれ補正を施すべきか否かを選択して、必要に応じて手ぶれ補正処理の指示を与えることが出来る。 According to the image recording apparatus of the present invention, when a large camera shake occurs by the operation of the image recording, because the fact is notified, the user can recognize the occurrence of the camera shake, the image at that time select whether to be subjected to camera shake correction, it is possible to provide an indication of the image stabilization processing as required.
尚、ユーザは、手ぶれ補正処理の指示を与えなかった画像についても、記録媒体に記録した後、該画像に対して手ぶれ補正を施すことが可能である。 Note that the user, for the image did not give an indication of camera shake correction process, after recording on a recording medium, it is possible to perform the camera shake correction on the image.

具体的には、ユーザ操作時の手ぶれを検出すべき角速度センサーを具え、前記演算処理手段は、前記角速度センサーから得られるピッチ方向(前後への傾き)及びヨー方向(左右へのひねり)の角速度データに基づいて、画面上のぶれベクトルを画素単位で導出し、そのぶれベクトルの大きさを前記ぶれ量として算出する。 Specifically, comprising an angular velocity sensor to be detected shake during user operation, the processing means, the angular velocity of the (tilt back and forth) the pitch direction obtained from the angular velocity sensor and the yaw direction (twist to the left and right) based on the data, to derive a motion vector on the screen in units of pixels, and calculates the size of the blur vector as the motion amount.
この場合、前記閾値は、画面のサイズ(画素数)に応じて変化させることが有効である。 In this case, the threshold value, it is effective to vary depending on the size of the screen (number of pixels).

又、具体的構成において、前記報知手段は、ぶれ量が所定の閾値よりも大きいとき、手ぶれ補正を施すか否かをユーザに問うメッセージをディスプレイに表示するものである。 Further, in a specific configuration, the notification means, when the shake amount is greater than a predetermined threshold, and displays a message to ask whether to perform the camera shake correction to the user on the display.
該具体的構成によれば、ユーザは、ディスプレイの表示によって容易に手ぶれの発生を認識することが出来る。 According to this particular configuration, the user can recognize the occurrence of easily shake by displaying on the display.

更に具体的には、前記報知手段は、ディスプレイに表示されている撮影画像に重ねて前記メッセージを表示するものである。 More specifically, the notification means is for displaying the message superimposed on the captured image displayed on the display.
該具体的構成によれば、記録せんとする画像を確認して手ぶれ補正を施すべきか否かを判断することが出来る。 According to this particular configuration, it is possible to determine whether to apply the camera shake correction to confirm the image to be recorded cents.

本発明に係る画像記録装置によれば、ユーザが意図的に手ぶれを発生させて画像に特殊効果を付与したい場合等に、撮影画像毎に手ぶれ補正を施すか否かの選択を行なうことが可能である。 According to the image recording apparatus according to the present invention, the user or the like and it is desired to impart a special effect by generating camera shake to an image, it can be performed to select whether to perform the image stabilization for each captured image it is.

以下、本発明をデジタルカメラに実施した形態につき、図面に沿って具体的に説明する。 DETAILED DESCRIPTION embodiment the present invention is implemented in a digital camera, specifically described below with reference to the drawings.
本発明に係るデジタルカメラは、図1に示す如く、対物レンズ等の光学系(7)とCCD等の撮像素子(8)から撮像装置を構成しており、該撮像装置によって取り込まれた画像は、AD変換回路(9)によってデジタルデータに変換された後、CPU(14)及びSDRAM(15)を具えたASIC(1)へ供給される。 Digital camera according to the present invention, as shown in FIG. 1, an optical system such as an objective lens (7) constitutes the imaging device from the imaging device such as a CCD (8), the images captured by the image pickup device is converted into digital data by an AD converter (9), is supplied to the CPU (14) ASIC and equipped with SDRAM (15) (1).

ASIC(1)には、サブマイコン(3)を介して操作釦(4)が接続されると共に、画像を記録するための記録媒体(5)と、撮影画像を表示するためのディスプレイ(6)とが接続されている。 ASIC (1) to, together with the operation buttons through the sub-microcomputer (3) (4) is connected, the recording medium for recording an image (5) and a display for displaying the captured image (6) door is connected.
又、ASIC(1)には、AD変換回路(16)を具えた手ぶれマイコン(2)が接続されており、ピッチ方向(前後への傾き)及びヨー方向(左右へのひねり)のぶれを検出するための角速度センサーを構成する一対のジャイロスコープ(10)(11)からの検出信号が、それぞれオペアンプ(12)(13)を経て、手ぶれマイコン(2)に供給される。 Further, the ASIC (1), AD conversion circuit (16) to shake the microcomputer (2) is connected equipped, (the slope of the front-back) pitch direction and detecting a blur in the yaw direction (twist to the left and right) detection signals from the pair of the gyroscope (10) (11) constituting the angular velocity sensor for, respectively via the operational amplifier (12) (13), is supplied to the camera shake microcomputer (2).

図2は、画像撮影時の制御手続きを表わしており、ステップS1では、ジャイロスコープによって構成される角速度センサーからの検出信号に基づいて、シャッター釦操作時のぶれ量を算出する。 Figure 2 represents the control procedure at the time of image capturing, in step S1, based on the detection signal from the angular velocity sensor constituted by a gyroscope, and calculates the amount of blur when the shutter-release button operation. 次にステップS2では、算出されたぶれ量を所定の閾値と比較して、手ぶれ発生の有無を判断する。 Next, in step S2, the calculated shake amount is compared with a predetermined threshold value, it is determined whether the camera shake occurrence. ここでノーと判断されたときは、ステップS6に移行して、画像を記録媒体に記録して保存し、手続きを終了する。 When it is determined NO, the process proceeds to step S6, and stored to record an image on a recording medium, the procedure is ended.

一方、手ぶれの発生によってステップS2にてイエスと判断されたときは、ステップS3に移行し、前記算出されたぶれ量が手ぶれ補正の可能な範囲内であるか否かを判断する。 On the other hand, when it is determined YES in Step S2 by the occurrence of camera shake, the process proceeds to step S3, the amount of the calculated blur is determined whether it is within range of the camera shake correction. ここでノーと判断されたときは、ステップS6に移行して、画像を記録媒体に記録して保存し、手続きを終了する。 When it is determined NO, the process proceeds to step S6, and stored to record an image on a recording medium, the procedure is ended.

ぶれ量が補正可能な範囲内であって、ステップS3にてイエスと判断されたときは、ステップS4に移行して、手ぶれの発生を報知すると共に手ぶれ補正を施すか否かを問うメッセージをディスプレイに表示する。 In a range correctable blur amount, when it is determined YES in step S3, the process proceeds to step S4, display a message to ask whether to perform the camera shake correction to notify the user of occurrence of the camera shake to display in.
これに対して、ユーザが手ぶれ補正を施すべき指示を与えず、ステップS4にてノーと判断されたときは、ステップS6に移行して、画像を記録媒体に記録して保存し、手続きを終了する。 In contrast, without giving an instruction user to be subjected to camera shake correction when it is determined NO in step S4, the process proceeds to step S6, and stored to record an image on a recording medium, the procedure ends to.

一方、ユーザが手ぶれ補正を施すべき指示を与え、ステップS4にてイエスと判断されたときは、ステップS5に移行して、撮影画像に手ぶれ補正を施し、更にステップS6にて手ぶれ補正の施された画像を記録媒体に記録して保存し、手続きを終了する。 On the other hand, gives an instruction to the user is to perform image stabilization, when it is determined YES in step S4, the process proceeds to step S5, subjected to camera shake correction on the photographed image is subjected further at step S6 of image stabilization images recorded to the recording medium and stored, the procedure is ended.
尚、手ぶれ補正の具体的な処理については、周知のところであるので、説明を省略する。 Note that the specific process of camera shake correction, since at the known, description thereof is omitted.

前記ステップS1におけるぶれ量の算出は、次の様にして行なう。 Calculation of the shake amount in the step S1 is carried out in the following manner.
手ぶれの元データは、撮影開始から撮影終了までの間(露光期間)のジャイロスコープ(10)の出力信号(ピッチ方向の角速度データ)と、撮影開始から撮影終了までの間(露光期間)のジャイロスコープ(11)の出力信号(ヨー方向の角速度データ)である。 Hand original data of blur, gyro until photographing ends beginning of imaging output signal (angular velocity data in the pitch direction), until the shooting end beginning of imaging (exposure period) of the gyroscope (10) of the (exposure period) a scope output signal (11) (angular velocity data in the yaw direction). ここで、両ジャイロスコープ(10)(11)のサンプリング間隔をdt[sec]とする。 Here, the sampling interval of the two gyroscopes (10) (11) and dt [sec].

カメラのピッチ方向の角速度θ′[deg/sec]は、ジャイロスコープ(10)(11)によって電圧Vg[mV]に変換された後、オペアンプ(12)(13)によって増幅される。 Angular velocity θ in the pitch direction of the camera '[deg / sec] is converted into a voltage Vg [mV] by the gyroscope (10) (11), it is amplified by an operational amplifier (12) (13). オペアンプから出力される電圧Va[mV]はAD変換回路(16)によってデジタル値D [step]に変換される。 Voltage output from the operational amplifier Va [mV] is converted into a digital value D L [step] by AD conversion circuit (16). デジタル値として得られたデータを角速度に変換するには、センサー感度S[mV/deg/sec]、オペアンプのアンプ倍率K[倍]、A/D変換係数L[mV/step]を用いて計算する。 To convert the data obtained as a digital value to the angular velocity, the sensor sensitivity S [mV / deg / sec], amplifier magnification K of the operational amplifier [times], using the A / D conversion coefficient L [mV / step] calculated to.

ジャイロスコープによって得られる電圧値Vg[mV]は、角速度θ′[deg/sec]の値と比例する。 Voltage Vg obtained by the gyroscope [mV] is proportional to the value of the angular velocity θ '[deg / sec]. このときの比例定数はセンサー感度であるので、電圧値Vg[mV]は、次式1で表わされる。 Since proportional constant at this time is the sensor sensitivity, the voltage value Vg [mV] is expressed by the following equation 1.
Vg=Sθ′ (式1) Vg = Sθ '(Equation 1)

また、オペアンプは電圧値Vgを増幅するだけなので、増幅された電圧Va[mV]は、次式2で表わされる。 Moreover, because only the operational amplifier amplifies the voltage value Vg, amplified voltage Va [mV] is expressed by the following equation 2.
Va=KVg (式2) Va = KVg (Equation 2)

オペアンプで増幅された電圧値Va[mV]はA/D変換され、n[step](例えば、−512〜512)のデジタル値D [step]を使って表現される。 Voltage is amplified by the operational amplifier value Va [mV] is converted A / D, n [step] ( e.g., -512~512) is expressed using the digital value D L [step] of. A/D変換係数をL[mV/step]とすると、デジタル値D [step]は、次式3で表わされる。 When the A / D conversion coefficient and L [mV / step], the digital value D L [step] is expressed by the following equation 3.
=Va/L (式3) D L = Va / L (Equation 3)

上記式1〜式3を用いることで、次式4に示すように、デジタル値D [step]から角速度θ′を求めることが出来る。 By using the above formula 1 formula 3, as shown in the following equation 4, the digital value D L [step] from can to obtain an angular velocity theta '.
θ′=(L/KS)D (式4) θ '= (L / KS) D L ( Equation 4)

撮影中の角速度データから、撮影された画像上でどれだけのぶれが生じたかを計算することが出来る。 From the angular velocity data being captured, it can be calculated how much blurring has occurred on the photographed image.
角速度データの1つのサンプル値から次のサンプル値までにカメラに生じた回転量をθ[deg]とする。 The amount of rotation occurring in the camera from one sample value of the angular velocity data to the next sample value and θ [deg]. この間、角速度一定でカメラが回転すると仮定し、サンプリング周波数をf=1/dt[Hz]とすると、回転量θ[deg]は次式5で表わされる。 During this time, assuming that the camera is rotated at a constant angular velocity, when the sampling frequency is f = 1 / dt [Hz], the amount of rotation theta [deg] is expressed by the following equation 5.
θ=θ′/f=(L/KSf)D (式5) θ = θ '/ f = ( L / KSf) D L ( Equation 5)

図3に示すように、r[mm]を焦点距離(35[mm]フィルム換算)とすると、カメラの回転量θ[deg]から画面上の移動量d[mm]が次式6により求められる。 As shown in FIG. 3, when r [mm] focal length (35 [mm] film equivalent), the movement amount d of the screen from the rotation amount of the camera θ [deg] [mm] is determined by the following equation 6 .
d=r・tanθ (式6) d = r · tanθ (Equation 6)

ここで求められた移動量d[mm]は、35[mm]フィルム換算時の手ぶれの大きさで、単位は[mm]である。 Here the obtained movement amount d [mm] is the size of 35 [mm] film equivalent when the camera shake, the unit is [mm]. 実際に計算処理するときには、画像の大きさをデジタルカメラの画像の大きさの単位[pixel]で考えなければならない。 When the actual calculation process, must be considered the size of the image in the unit [pixel] of the size of the digital camera image.

35[mm]フィルム換算の画像と、デジタルカメラで撮影した[pixe1]単位の画像は縦横比も異なるので、次のように計算を行なう。 35 [mm] and the image of the film equivalent, taken by a digital camera [pixe1] Since the unit of the image varies the aspect ratio, performs calculation as follows.
図4(a)(b)に示すように、35[mm]フィルム換算時は画像サイズの横×縦が36[mm]×24[mm]と決まっている。 As shown in FIG. 4 (a) (b), 35 [mm] film when converted to horizontal × vertical image size is determined with 36 [mm] × 24 [mm]. デジタルカメラで撮影した画像の大きさをX[pixe1]×Y[pixe1]とし、水平方向(ピッチ方向)のぶれ量をx[pixe1]、垂直方向(ヨー方向)のぶれ量をy[Pixe1]とすると、変換式は次式7、8となる。 The size of the image captured by a digital camera and X [pixe1] × Y ​​[pixe1], x [pixe1] the blurring amount in the horizontal direction (pitch direction), the shake amount in the vertical direction (yaw direction) y [Pixe1] When the conversion formula is represented by the following formula 7,8.
x=d (X/36)=r・tanθ (X/36) (式7) x = d x (X / 36 ) = r · tanθ x (X / 36) ( Equation 7)
y=d (Y/24)=r・tanθ (Y/24) (式8) y = d y (Y / 24 ) = r · tanθ y (Y / 24) ( Equation 8)

尚、上記式7、8には、dとθに添字のxとyが使用されているが、添字xは水平方向の値であることを、添字yは垂直方向の値であることを示している。 Incidentally, in the above formulas 7 and 8, but d and subscript theta x and y are used, the subscript x is to be a horizontal value, it indicates that the subscript y is a vertical direction of the value ing.

上記式1〜8をまとめると、水平方向(ピッチ方向)のぶれ量x[Pixe1]、垂直方向(ヨー方向)のぶれ量y[pixe1]は、次式9、10で表わされる。 Summarizing the above expression 1-8, the blurring amount in the horizontal direction (the pitch direction) x [Pixe1], the blurring amount in the vertical direction (yaw direction) y [pixe1] is expressed by the following equation 9.
x=r・tan{(L/KSf)D Lx }X/36 (式9) x = r · tan {(L / KSf) D Lx} X / 36 ( Formula 9)
y=r・tan{(L/KSf)D Ly }Y/24 (式10) y = r · tan {(L / KSf) D Ly} Y / 24 ( formula 10)

この変換式9、10を用いることで、デジタル値として得られたカメラの各軸の角速度データから、画像のピッチ方向及びヨー方向のぶれ量x、yを求めることが出来る。 By using this conversion formula 9 and 10, from the angular velocity data of each axis of the resulting camera as a digital value, the pitch and yaw directions of the blurring amount x of the image, can be obtained y.
そして、これらのぶれ量x、yから次式11により判定対象となる判定ぶれ量zを求める。 Then, these blur amount x, obtaining the determination blurring amount z to be determined by the following equation 11 from y.
z=(x×x)+(y×y) (式11) z = (x × x) + (y × y) (Equation 11)

従って、判定ぶれ量zが所定の閾値thよりも小さい場合は、手ぶれ無しと判定することが出来、判定ぶれ量zが所定の閾値th以上の場合は、手ぶれ有りと判定することが出来る。 Therefore, if the determination blurring amount z is less than the predetermined threshold value th, it is possible to determine that no camera shake, if the determination shake amount z is not smaller than a predetermined threshold value th can be determined that the shake there. ここで、閾値thは、ディスプレイの画面のサイズ(画素数)の大きさに応じて変えることが有効である。 Here, the threshold value th, it is effective to vary according to the size of the size of the display screen (number of pixels).

図5(a)〜(d)は、画像記録時のディスプレイ(6)の表示例を表わしており、同図(a)の如くスルー画像が表示されている状態でシャッター釦が操作されると、同図(b)の如く記録の対象となる画像(フリーズ画像)が表示されると共に、前述の如くぶれ量の算出が実行され、手ぶれが発生している場合は、同図(c)の如く、ディスプレイ(6)には、手ぶれ補正を施すべきか否かの選択を案内するメッセージが、撮影画像(フリーズ画像)に重ねて表示される。 Figure 5 (a) ~ (d) represents the display example of the display (6) at the time of image recording, when the shutter button is operated in a state where the through image as shown in FIG (a) is displayed , together with the image to be recorded as in FIG (b) (freeze image) is displayed, the calculation of the shake amount as described above is executed, when the camera shake occurs, in FIG (c) as, the display (6), a message for guiding the selection of whether to be subjected to camera shake correction is displayed superimposed on the photographed image (freeze image). そして、ユーザが手ぶれ補正を指示した場合は、撮影画像に手ぶれ補正を施すと共に、同図(d)の如く手ぶれ補正終了のメッセージを表示する。 When the user when the instructed image stabilization, is performed with the camera shake correction to the captured image, displays the image stabilization termination message as FIG (d).

上述のデジタルカメラによれば、ユーザが意図的に手ぶれを発生させて画像に特殊効果を付与したい場合等において、撮影画面毎に手ぶれ補正を施すか否かの選択を行なうことが可能である。 According to the above-described digital camera, when such a user intentionally wants to impart a special effect by generating camera shake to an image, it is possible to perform selection of whether to perform the image stabilization for each shooting screen.
又、ユーザは撮影時に手ぶれの発生を認識することが出来るので、撮影姿勢、光源の状態、環境条件などを踏まえた撮影技術の向上に資することが出来る。 Further, since the user can recognize the occurrence of camera shake during shooting, shooting position, the light source of the state, it is possible to contribute to the improvement of imaging technology in light of the environmental conditions.

又、手ぶれの発生を確認した上で、手ぶれ補正後の画像を手ぶれ補正前の画像と比較するによって、手ぶれ補正の効果を確認することが出来る。 In addition, after confirming the occurrence of camera shake, depending on to compare the image after the anti-shake and anti-shake before the image, it is possible to see the effect of camera shake correction.
更に又、手ぶれ補正前の画像と手ぶれ補正後の画像の両方を、記録媒体に記録することも可能である。 Furthermore, both of the image after camera shake compensation and image stabilization previous image, it can be recorded on the recording medium.

本発明に係るデジタルカメラの構成を示すブロック図である。 It is a block diagram showing a configuration of a digital camera according to the present invention. 画像撮影時の制御手続きを示すフローチャートである。 It is a flowchart illustrating a control procedure at the time of image capturing. カメラの回転と画面上の移動量の関係を説明する図である。 It is a diagram illustrating a movement amount of the relationship on the camera rotation and screen. 35mmフィルム換算のぶれ量とデジタルカメラにおける画素単位のぶれ量の関係を説明する図である。 The shake amount of the relationship between pixels in shake amount and the digital camera of 35mm film equivalent is a diagram for explaining. ディスプレイの表示例を示す図である。 It is a diagram illustrating a display example of the display.

符号の説明 DESCRIPTION OF SYMBOLS

(1) ASIC (1) ASIC
(2) 手ぶれマイコン (2) shake microcomputer
(4) 操作釦 (4) Operation button
(5) 記録媒体 (5) the recording medium
(6) ディスプレイ (6) display
(7) 光学系 (7) optical system
(8) 撮像素子 (8) the imaging element
(10) ジャイロスコープ (10) gyroscope
(11) ジャイロスコープ (11) gyroscope

Claims (4)

  1. ユーザ操作に応じて画像を撮影し、該画像を記録媒体に記録することが可能であると共に、ユーザ操作時の手ぶれを検出してぶれ量に応じて画像に手ぶれ補正を施すことが可能な画像記録装置において、 Capturing images in response to a user operation, together it is possible to record the image on a recording medium, capable of performing camera shake correction to the image in accordance with the amount of blur by detecting the shake during user operation image in the recording apparatus,
    ユーザ操作時のぶれ量を算出する演算手段と、 Calculating means for calculating the amount of blur during user operation,
    算出されたぶれ量を所定の閾値と比較して、ぶれ量が所定の閾値よりも大きいとき、その旨を報知する報知手段と、 The calculated shake amount is compared with a predetermined threshold value, when the blurring amount is larger than a predetermined threshold value, and informing means for informing to that effect,
    前記報知に応じて手ぶれ補正を施すべき旨のユーザ指示が発せられたとき、画像に手ぶれ補正を施す補正手段とを具えていることを特徴とする画像記録装置。 When a user instruction to be subjected to image stabilization in accordance with the notification is issued, an image recording apparatus characterized in that it comprises a correcting means for performing image stabilization in image.
  2. ユーザ操作時の手ぶれを検出すべき角速度センサーを具え、前記演算処理手段は、前記角速度センサーから得られるピッチ方向及びヨー方向の角速度データに基づいて、画面上のぶれベクトルを画素単位で導出し、そのぶれベクトルの大きさを前記ぶれ量として算出する請求項1に記載の画像記録装置。 Comprising an angular velocity sensor to be detected shake during user operation, the processing means, based on the pitch and yaw directions of angular velocity data obtained from the angular velocity sensor, and deriving a motion vector on the screen in pixels, the image recording apparatus according to claim 1 for calculating the size of the blur vector as the motion amount.
  3. 前記報知手段は、ぶれ量が所定の閾値よりも大きいとき、手ぶれ補正を施すか否かをユーザに問うメッセージをディスプレイに表示するものである請求項1又は請求項2に記載の画像記録装置。 The notification means, when the shake amount is greater than a predetermined threshold value, the image recording apparatus according to message asking whether to perform the camera shake correction to the user in claim 1 or claim 2 is intended to be displayed on the display.
  4. 前記報知手段は、ディスプレイに表示されている撮影画像に重ねて前記メッセージを表示するものである請求項3に記載の画像記録装置。 The notification means, an image recording apparatus according to claim 3 superimposed on the captured image displayed on the display is for displaying the message.
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