JP2007171455A - Imaging apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an imaging apparatus capable of detecting a deviation between the center of the optical axis of light rays made incident on an imaging element and the center of the imaging element. <P>SOLUTION: The imaging apparatus is provided with an image pickup part 2 provided with an imaging element 1 for picking up an image of observation light 18 from a microscope body 11, a PC 3 for detecting the position of the center of the imaging element 1 and the position of the optical axis center of the observation light 18 made incident on the imaging element 1, and a monitor 4 for displaying the position of the center of the imaging element 1 and the position of the optical axis center of the observation light 18 made incident on the imaging element 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image pickup apparatus that picks up an optical image incident from an optical device such as a microscope with an image pickup element.

In recent years, digital cameras have been used for microscopic observation, and not only imaging but also observation is often performed on a monitor.
During microscopic observation, peripheral light amount unevenness (so-called “shading”) in which the brightness of the peripheral portion of the observation image becomes darker than that of the central portion occurs due to an optical system such as a lens and illumination. Similarly, since shading occurs during observation with a digital camera, some digital cameras have a shading correction function as an improvement measure. In a typical method of shading correction, image processing is performed on a portion where shading has occurred on the acquired image, so that the image is corrected so that the portion has the same luminance as the central portion. .

For example, Patent Document 1 discloses a digital camera for a microscope that performs shading correction on a captured image.
By the way, the optical axis center of the light incident on the image sensor of the digital camera and the center of the image sensor may be misaligned due to misfit of the microscope and the digital camera. This occurs even when the condenser is not centered well, but since the center of the optical axis of the light incident on the eyepiece and the center of the optical axis of the light incident on the image sensor are independent, the centering of the eyepiece is not performed. In some cases, the center of the optical axis of the light incident on the image sensor is shifted from the center of the image sensor. In such a case, light is incident with a bias toward a direction other than the center of the image sensor, and the amount of shading varies depending on the top, bottom, left, and right on the monitor. For this reason, there are places where the amount of light falls extremely on the monitor, and even when shading correction is performed, the expected brightness unevenness is not improved, or conversely, the correction effect is too great and the surroundings are bright. The result may be unintended by the user, such as too much. In addition, since the high-luminance portion is shifted from the center portion, the reference value for performing shading correction is not appropriate, and there is a possibility of affecting the image after image processing.

To deal with such a problem, for example, Patent Document 2 proposes a method of correcting an optical axis by sandwiching an optical system between a microscope and an optical device unit and moving the optical system.
JP 2001-281544 A JP 2003-279858 A

  However, the method according to Patent Document 2 is a method for correcting the inclination of the optical axis. Therefore, the effect is not exhibited when the center of the optical axis itself is shifted. In this method, since the means for detecting the deviation (deviation amount detection tool) is independent of the image sensor, the optical axis correction process is not directly connected to the display unit, and the above-described problems cannot be solved. .

  In view of the above circumstances, an object of the present invention is to provide an imaging apparatus that detects a deviation between the optical axis center of light incident on an imaging element and the center of the imaging element, or detects and corrects the deviation.

  In order to achieve the above object, an imaging device according to a first aspect of the present invention includes an imaging device that images incident light from an optical device, and an image of the incident light that is captured by the imaging device. Position detecting means for detecting the position of the center of the image sensor and the position of the optical axis center of the incident light incident on the image sensor, and the position of the center of the image sensor detected by the position detector and the light of the incident light Position display means for displaying the position of the axis center.

  The imaging apparatus according to a second aspect of the present invention is the imaging apparatus according to the first aspect, wherein the distance between the position of the center of the imaging element detected by the position detection unit and the position of the center of the optical axis of the incident light. And a distance display means for displaying the distance calculated by the distance calculation means.

  An imaging apparatus according to a third aspect of the present invention is the imaging apparatus according to the first or second aspect, further comprising a moving unit that moves the imaging element, and a position of the center of the imaging element detected by the position detection unit. The imaging device is moved by the moving means so that the position of the optical axis center of the incident light coincides.

  An image pickup apparatus according to a fourth aspect of the present invention includes an image pickup device that picks up incident light from an optical device, and dimming degree information from the optical axis center that is generated when the incident light is picked up by the image pickup device. Storage means stored in advance, position detection means for detecting the position of the optical axis center of the incident light, and light intensity information stored in the storage means with reference to the optical axis center position detected by the position detection means And image processing means for uniformly correcting the peripheral light amount unevenness of the captured image.

  In addition to the above-described apparatus, the present invention can be configured as a method or a program.

  According to the present invention, the shift between the center of the image sensor and the center of the optical axis of the light incident on the image sensor and the amount of the shift can be easily confirmed. In addition, since the deviation can be automatically corrected, the convenience of operation can be greatly improved. Further, even if the image is captured in a state where the deviation exists, the peripheral light amount unevenness of the image can be corrected appropriately.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, an image pickup apparatus according to Embodiment 1 of the present invention will be described.
1 to 6 are diagrams used for explaining the image pickup apparatus according to the present embodiment. FIG. 1 is a diagram illustrating an entire configuration of a microscope system including the image pickup apparatus according to the present embodiment. FIG. FIG. 3 is a diagram illustrating an example of a GUI (Graphical User Interface) according to the present embodiment, FIG. 4 is a flowchart illustrating an operation according to the present embodiment, and FIG. 5 is an explanatory diagram for deriving the optical axis center position. FIG. 6 is an explanatory diagram when white sample points are extracted from the specimen image.

First, the overall configuration of the microscope system including the imaging apparatus according to the present embodiment and the principle of optical axis deviation will be described with reference to FIGS. 1 and 2.
In FIG. 1, the imaging apparatus according to the present embodiment includes an imaging unit 2 including an imaging element 1, a PC 3, and a monitor 4. The PC 3 performs various control processes such as driving of the imaging unit 2, image processing on the captured image, and image display on the monitor 4.

  The PC 3 includes a CPU (not shown), a ROM in which a control program is stored, a RAM used as a work area for the CPU, and the like. Various control processes performed by the PC 3 are stored in the ROM by the CPU. This is done by reading and executing the control program being executed. Further, input means (not shown) such as a keyboard and a mouse are connected to the PC 3, and the observer can perform various inputs using this.

  The imaging unit 2 is connected to the television adapter 6 via the fitting unit 5. The television adapter 6 is connected to a lens barrel 9 in which an eyepiece 8 is installed through a fitting portion 7. The lens barrel 9 is connected to the microscope main body 11 via the fitting portion 10.

  A revolver 12, an objective lens 13, a stage 14, a condenser lens 15, a lamp house 16, and the like are attached to the microscope body 11, and a specimen 17 is placed on the stage 14.

With such a configuration, the observation light 18 is emitted from the lamp house 16 and enters the image sensor 2 after passing through each optical part.
Here, since the fitting parts 5, 7, and 10 are fitted by a mechanical method such as a lock screw or screwing, a small space (play) is inevitably generated in the fastening part (fitting of a revolver or the like). It is the same for the case of the match.) Therefore, even when the center of the optical axis of the observation light 18 from the eyepiece 8 appears in the center, the center of the optical axis of the observation light 18 incident on the image sensor 1 and the center of the image sensor 1 depending on the fastening condition of each part. There may be a slight deviation between the two. This is shown in FIG.

  In FIG. 2, the point O indicates the center of the image sensor 1, and the point P indicates the optical axis center of the observation light 18 incident on the image sensor 1. As described above, since the respective centers are shifted, as a result, the shading is biased. In the figure, the observation light 18 incident on the image sensor 1 is shown as a circular area, but this indicates an area of the observation light 18 incident on the image sensor 1 having a predetermined luminance value or more.

  Next, an example of a GUI according to the present embodiment displayed on the monitor 4 as an operation unit will be described with reference to FIG. This GUI is displayed on the monitor 4 by the control process of the PC 3.

  In the GUI shown in the figure, the live image display unit 21 is an area for displaying a camera observation image (an image taken by the image pickup device 1 of the image pickup unit 2) in real time. It corresponds. The live image display unit 21 includes a mark 22 indicating the center (point O) of the image sensor 1, a mark 23 indicating the optical axis center (point P) of the observation light 18 incident on the image sensor 1, and the center thereof. The distance between them (hereinafter referred to as the distance between the points OP) 24 can also be displayed. However, in the display of the distance 24 between the points OP, the distance between the points OP is displayed as the distance between the X component and the Y component.

  The radio button 25 in the Gap Indicator section can switch the display of the distance 24 between OPs. Gap Indicator displays the pixel unit deviation (OP) on the image sensor of the camera (camera-pixel), distance deviation (camera-μm), or distance (specimen-μm) on the specimen image plane. Each can be selected with a check box. However, when there is no input to the pixel size input unit 27, the camera-μm and specimen-μm check boxes are grayed out and cannot be selected. Further, even when there is no input to the magnification information input unit 26, the specification-μm check box is grayed out.

  The magnification input unit 26 enables input of the magnification of the optical system, and can input the magnifications of the objective lens 13 and the TV adapter 6. The pixel size input unit 27 enables input of a pixel size of an image sensor (for example, CCD). If the distance between the points OP is not obtained, input to the magnification input unit 26 and the pixel size input unit 27 is not necessary.

The adjustment parameter input unit 28 enables input of an adjustment parameter (Threshold), which will be described in detail later, and a predetermined value is input in advance as an initial value.
The execute button 29 is a button for starting the detection of the position of the point P and the calculation of the distance between the points OP.

  In FIG. 3, for convenience of explanation, the distance 24 between the points OP and the magnification input unit 26 are surrounded by dotted lines, but it goes without saying that these dotted lines are not displayed on the actual GUI.

Next, the operation according to the present embodiment for detecting the position of the point P and obtaining the distance between the points OP will be described with reference to the flowchart shown in FIG. 4 and FIG.
This operation is performed when the CPU reads and executes the control program stored in the ROM in the PC 3.

  Prior to the start of this operation, a focusing operation is once performed on the specimen 3 placed on the stage 14 to bring the optical system of the microscope body 11 into a focused state, and the stage 14 is maintained while maintaining this state. It is assumed that the specimen 3 is removed from. Further, the GUI (see FIG. 3) displayed on the monitor 4 includes an input to the magnification input unit 26 and the pixel size input unit 27, and an input to the adjustment parameter input unit 28 or radio buttons 25 as necessary. It is assumed that the check is performed in advance by an observer. Then, after these operations are performed, this operation starts when the execution button 29 on the GUI displayed on the monitor 4 is pressed by the observer.

As shown in FIG. 4, when this operation is started, first, an image is picked up with the state of the microscope main body 11 kept (S1). That is, an unsampled image is captured.
Subsequently, the luminance average value Y _ave is calculated from the image obtained by imaging in S1, and this is multiplied by the adjustment parameter (determined by a constant coefficient α) input to the adjustment parameter input unit 28 on the GUI. A detection threshold TH (= αY _ave ) is calculated (S2).

  Subsequently, a pixel region having a luminance value equal to or higher than the center detection threshold TH calculated in S2 is extracted from the image obtained in S1 (S3). The area extracted at this time is a circular area. For example, as illustrated in FIG. 5, when the image obtained in S <b> 1 is an image 31, a circular region 32 is extracted from the image 31.

  In addition, when the value of the center detection threshold TH is small, or when the luminance value of each pixel of the image is large as a whole, on the image obtained in S1, a pixel having a luminance value equal to or higher than the center detection threshold TH is displayed. In some cases, the area becomes wider and a circular area cannot be extracted from the image obtained in S1. In this case, it is necessary to return the process to S2 after setting the value of the adjustment parameter input to the adjustment parameter input unit 28 to a larger value. Such processing may be performed automatically or manually.

  Subsequently, from the region extracted in S3, the four points of the top, bottom, left, and right peaks (four points consisting of a point where the x coordinate value is maximum and minimum, a point where the y coordinate value is maximum and a point where the y coordinate value is maximum) ) Is extracted (detected) (S4). Note that the xy coordinate system relating to the x coordinate value and the y coordinate value referred to here is the xy coordinate system 33 shown in FIG. 5, and these four points are represented by the R point, Let it be 4 points of L point, U point, and D point.

  Subsequently, as shown in FIG. 5, the coordinates of the four points extracted in S4, that is, the coordinates of the R point (Xr, Yr), the coordinates of the L point (Xl, Yl), and the coordinates of the U point (Xu, Yu), the coordinates (Xd, Yd) of the point D are acquired in units of pixels, and the coordinates of the optical axis center (point P) of the observation light 18 are obtained from the coordinates of these four points (S5). The coordinates of this point P are as follows.

また、Ｓ５では、Ｓ１で撮像された画像から、撮像素子１の中心（点Ｏ）の座標も求める。例えば、Ｓ１で撮像された画像の中心を撮像素子１の中心として、その位置を求める。

In S5, the coordinates of the center (point O) of the image sensor 1 are also obtained from the image captured in S1. For example, the position of the center of the image picked up in S <b> 1 is determined as the center of the image sensor 1.

Subsequently, an ON / OFF check of the radio button 25 is determined (S6). When ON is checked, the distance of the shift amount is calculated from the values set in the magnification input unit 26 / pixel size input unit 27 and the coordinates of the points O and P (S7). Assuming that the coordinates of the point O are O (x _o , y _o ), the magnification of the objective lens is M _OB , the magnification of the TV adapter is M _TV , and the pixel size of the image sensor is L, the distance in the x coordinate direction is as follows: Become. The y coordinate direction can also be calculated by the same calculation.

ラジオボタンにOFFにチェックが入っている場合は、Ｓ７の処理を行わずに次の処理へ進む。

If the radio button is checked off, the process proceeds to the next process without performing the process of S7.

  After S7 or after S6 is No, the live image display unit 21 on the GUI is marked with a mark 23 indicating the center of the optical axis of the observation light 18 and a mark O indicating the center of the image sensor 1. When the radio button 25 is checked, the distance between the points OP obtained in S7 is displayed as the distance 24 between the points OP (S8).

With such an operation, the center of the image sensor 1, the optical axis center of the observation light 18 incident on the image sensor 1, and the shift amount between the centers can be displayed on the monitor 4.
As described above, according to the imaging apparatus according to the present embodiment, the observer can easily shift the center of the imaging device 1, the optical axis center of the observation light 18 incident on the imaging device 1, and the deviation amount between the centers by a simple operation. Can be clearly confirmed. Therefore, in addition to preventing monitor observation and imaging without being aware of the presence of the deviation, when the observer confirms the deviation, it is used as a support function for manually adjusting the deviation. You can also.

In the imaging apparatus according to the present embodiment, the following various modifications can be considered.
For example, in the imaging apparatus according to the present embodiment, the coordinates of the optical axis center (point P) of the observation light 18 are obtained using the center detection threshold TH, but may be obtained by other methods. As another method, a method of taking a predetermined number of points from the image obtained in S1, plotting the luminance values, and approximating the distribution of luminance values with a quadratic surface can be mentioned. As a result, the center of the optical axis (point P) can be obtained by analyzing the shape of the derived quadric surface.

  In the imaging apparatus according to the present embodiment, the method of performing processing based on the image of the non-sample state has been described. However, as illustrated in FIG. 6, even when the sample 17 is present, the background is white. It is also possible to apply a method for performing processing based on sample points (for example, T1, T2, T3, Tn, etc. in the figure) extracted from the position of the specimen. In this method, a saturation value is derived from an image obtained by capturing an image of the sample 17 in advance, and a point where saturation = 0 and a point necessary for processing is extracted as a sample point. By obtaining a quadric surface, it is possible to obtain the center of the optical axis (point P) of the observation light 18.

  In the imaging apparatus according to the present embodiment, the adjustment parameter (constant coefficient α) input to the adjustment parameter input unit 28 may be automatically changed according to the magnification input to the magnification input unit 26. Good. In this case, it is possible to automatically change the adjustment parameter according to the input magnification of the objective lens 13.

  In the imaging apparatus according to the present embodiment, operations for the imaging apparatus are received via the GUI displayed on the PC 3 or the monitor 4, but these operations are received via another operation unit such as a control box. You may do it.

The image pickup apparatus according to the second embodiment of the present invention has a configuration in which, after obtaining the distance between the points OP described in the first embodiment, the deviation between the points OP is further automatically corrected.
7 and 8 are diagrams used to describe the imaging apparatus according to the present embodiment. FIG. 7 is a diagram illustrating a partial configuration of a microscope system including the imaging apparatus according to the present embodiment. FIG. 8 illustrates the present embodiment. It is a flowchart which shows the operation | movement which concerns on. In the description of the present embodiment, the description of the same configuration as that of the first embodiment is omitted.

First, the imaging apparatus according to the present embodiment will be described with reference to FIG.
As shown in the figure, in the image pickup unit 2, the image pickup device 1 is installed on the image pickup device adjustment stage 36, and the image pickup device adjustment stage 36 on which the image pickup device 1 is installed has an X-direction drive motor 37. And it is comprised so that it can move to a X direction and a Y direction by the drive of the Y direction drive motor 38. FIG. The drive control of these drive motors 37 and 38 is performed by the PC 3.

Next, the operation according to the present embodiment for correcting the shift between the points OP will be described with reference to the flowchart shown in FIG.
This operation is also performed by the PC 3.

  Further, it is assumed that the pixel size is input to the pixel size input unit 27 of the image sensor even before the start of this operation. Then, when the execution button 29 on the GUI displayed on the monitor 4 is pressed by the observer, this operation is started.

  As shown in FIG. 8, when this operation starts, first, in S11, processing similar to S1 to S7 shown in FIG. 4 is performed. However, in this embodiment, S6 is Yes regardless of whether or not the radio button 25 is checked. That is, in S11, the positions of the point P and the point O are detected and the distance between the points OP (the distance between the x component and the y component) is obtained.

  Subsequently, a deviation correction amount between the points OP is obtained from the distance between the points OP obtained in S11, and drive signals of the x component and the y component corresponding to the deviation correction amount are respectively driven by the X direction drive motor 37 and the Y direction drive. Output to the motor 38 (S12), and the correction of the deviation between the points OP is completed.

By such an operation, the image sensor adjustment stage 36 on which the image sensor 1 is installed moves, and the shift between the points OP is corrected.
As described above, according to the imaging apparatus according to the present embodiment, the center (point O) of the imaging element 1 and the optical axis center (point P) of the observation light 18 incident on the imaging element 1 can be performed without complicated operations by the observer. ) Can be automatically corrected. Therefore, it is not necessary for the observer to perform a fine adjustment operation for adjusting the deviation, and the convenience of the operation can be greatly improved. Further, since the shading bias can be eliminated, the observation image can be optimized.

In the imaging apparatus according to the present embodiment, the following various modifications can be considered.
For example, in the image pickup apparatus according to the present embodiment, the image pickup device adjustment stage 36 on which the image pickup device 1 is installed is moved by motor drive, but may be moved by other means such as piezo device drive. In particular, for an imaging apparatus that already has a pixel shifting function by driving a piezo element or the like, there is an advantage that the correction function can be implemented without requiring significant improvement of the apparatus.

  In the imaging apparatus according to the present embodiment, the correctable distance may be limited when automatically correcting the deviation between the points OP. That is, when the center of the optical axis of the observation light 18 incident on the image pickup device 1 is more than a certain distance from the center of the image pickup device 1, the fact is displayed on the monitor 4 to notify the observer. Automatic correction is not performed, and if it is within a certain distance, automatic correction is performed. In this case, when automatic correction is not performed, the observer can be further prompted to perform correction by manual operation. If such a method is used, the above-described automatic correction can be applied even to an imaging apparatus in which the movable range of the imaging element 1 is narrow.

  Further, in the imaging apparatus according to the present embodiment, the position of the optical axis center of the observation light 18 incident on the imaging device 1 can be stored for each magnification of the objective lens 13. In this case, when the objective lens 13 is changed, the position of the optical axis center corresponding to the changed objective lens 13 is read out, and the image pickup device 1 is automatically corrected based on this position so as to automatically correct the deviation between the points OP. Since it can be moved, the convenience can be improved.

  In the imaging apparatus according to the present embodiment, the method of automatically correcting by moving the imaging element adjustment stage 36 on which the imaging element 1 is installed has been described. However, in the system including the imaging apparatus according to the present embodiment, the microscope body 1 The condenser lens 15 may be moved by electric drive so that the optical axis center of the observation light 18 incident on the image sensor 1 is aligned with the center of the image sensor 1 for automatic correction.

  Next, a third embodiment of the present invention will be described. FIG. 9 is a flowchart used to describe the present embodiment, FIG. 10 is a GUI diagram used to describe the present embodiment, and FIG. 11 is a table diagram used in the present embodiment.

In the present embodiment, it is assumed that the PC 3 stores in advance peripheral light amount decrease correction information (hereinafter referred to as shading correction information) that is generated when an image is acquired by the image sensor 1. As shown in the table of FIG. 11, the held shading correction information is the shading correction information Sh _{OB, TV} (x, y) at each position generated when the objective lens 13 and the TV adapter 6 are used in combination. In addition, it is assumed that typical shading correction information Sh _-,- (x, y) cited when the optical combination information is unknown is held.

  In the GUI of FIG. 10, 101 is a live image display unit similar to 21, 102 is a radio button for selecting whether to perform shading correction, and 103 is the same magnification input unit as 26. Reference numeral 104 denotes an image pickup button, which is pressed to acquire an image and save it in the PC 3.

Next, the image processing method according to this embodiment will be described with reference to the flowchart shown in FIG.
This operation starts when the observer presses the calculate button 29 on the GUI shown in FIG. Steps up to S5 shown in FIG. 4 are the same as in the first embodiment. At this time, the optical axis center position is held in the PC 3 (S22).

  Thereafter, the observer places the specimen 17 on the stage 14 (S23), presses 104 on the GUI of FIG. 10, and performs a normal image acquisition operation (S24). At this time, after obtaining the sample image (S24), the radio button 102 is checked (S25). If ON, image correction is performed by the PC 3 (S26).

The image correction process at this time will be described.
First, the input value set in the magnification input unit 103 is referred to, and shading correction information Sh _{OB, TV} (x, y) corresponding to the combination is acquired from the PC 3. Next, in order to use the position of the point P as a reference, the reference value is shifted by the distance between the point P and the point O with respect to the shading correction formula. Thereby, shading correction can be applied by shifting the center coordinates.

このシェーディング補正式をＳ２４で取得した画像に適用し、画像を補正する（Ｓ２６）。その後、画像をＰＣ３に保存する（Ｓ２７）。

This shading correction formula is applied to the image acquired in S24 to correct the image (S26). Thereafter, the image is stored in the PC 3 (S27).

If the radio button 25 is OFF in S25, the image acquired in S24 is stored in the PC 3 as it is (S27).
By the above method, the peripheral light amount unevenness of the image can be corrected.

  As described above, according to the imaging apparatus according to the present embodiment, even if the center of the imaging device 1 and the optical axis center of the observation light incident on the imaging device 1 remain deviated, the peripheral light amount unevenness (shading) of the sample image is appropriately adjusted. Can be corrected. If the reference for correcting the unevenness in the peripheral light amount is the center of the image (the center of the image sensor 1), the maximum light amount is obtained when the optical axis center of the observation light incident on the image sensor 1 deviates from the center of the image sensor 1. However, according to the method according to the present embodiment, since the center of the optical axis of the observation light incident on the image sensor 1 can be determined as a reference, optimal image correction is performed. Can do.

  The present invention has been described in detail above. However, the present invention is not limited to the above-described embodiments, and various modifications and changes may be made without departing from the scope of the present invention.

  For example, the configuration or operation of the imaging apparatus according to each of the above embodiments may be combined with the configuration or operation of the imaging apparatus according to another embodiment.

1 is a diagram illustrating an overall configuration of a microscope system including an imaging apparatus according to Embodiment 1. FIG. It is explanatory drawing of an optical axis offset. 3 is a diagram illustrating an example of a GUI according to Embodiment 1. FIG. 3 is a flowchart illustrating an operation according to the first embodiment. It is explanatory drawing at the time of deriving | leading-out the optical axis center position. It is explanatory drawing at the time of extracting a white sample point from a sample image. 6 is a diagram illustrating a partial configuration of a microscope system including an imaging apparatus according to Embodiment 2. FIG. 10 is a flowchart illustrating an operation according to the second embodiment. 10 is a flowchart illustrating an operation according to the third embodiment. FIG. 10 is a diagram of a GUI used for describing the third embodiment. It is a table figure used for Example 3. FIG.

Explanation of symbols

1 Imaging device 2 Imaging unit 3 PC
4 monitor 5 fitting part 6 TV adapter 7 fitting part 8 eyepiece lens 9 lens barrel 10 fitting part 11 microscope body 12 revolver 13 objective lens 14 stage 15 condenser lens 16 lamp house 17 specimen 18 observation light 21 live image display part 22 Mark indicating the center of the image sensor 23 Mark indicating the optical axis center of the observation light 24 Distance between centers 25 Radio button 26 Magnification input unit 27 Pixel size input unit 28 Adjustment parameter input unit 29 Execution button 31 Image 32 Circular area 33 xy coordinates System 36 Image sensor adjustment stage 37 X direction drive motor 38 Y direction drive motor 101 Live image display unit 102 Radio button 103 Magnification input unit 104 Imaging button

Claims (8)

An image sensor for imaging incident light from an optical device;
Position detection means for detecting the position of the center of the image sensor and the position of the center of the optical axis of the incident light incident on the image sensor from the image of the incident light imaged by the image sensor;
Position display means for displaying the position of the center of the image sensor detected by the position detection means and the position of the optical axis center of the incident light;
An imaging apparatus comprising: Distance calculating means for calculating a distance between the position of the center of the image sensor detected by the position detecting means and the position of the optical axis center of the incident light;
Distance display means for displaying the distance calculated by the distance calculation means;
The imaging apparatus according to claim 1, further comprising: A moving means for moving the image sensor;
Moving the imaging element by the moving means so that the position of the center of the imaging element detected by the position detection means and the position of the optical axis center of the incident light coincide with each other;
The imaging apparatus according to claim 1 or 2, wherein An image sensor for imaging incident light from an optical device;
Storage means for preliminarily storing dimming degree information from the optical axis center, which is generated when the incident light is imaged by the imaging device;
Position detecting means for detecting the position of the center of the optical axis of the incident light;
An image processing unit that uniformly corrects the peripheral light amount unevenness of the captured image using the dimming degree information stored in the storage unit on the basis of the optical axis center position detected by the position detection unit;
An imaging apparatus comprising: A display method for an imaging apparatus including an imaging element,
From the image obtained by imaging the incident light from the optical device with the image sensor, the center position of the image sensor and the position of the optical axis center of the incident light incident on the image sensor are detected,
Displaying the detected position of the center of the image sensor and the position of the optical axis center of the incident light;
A display method for an image pickup apparatus. An image processing method of an imaging apparatus including an imaging element,
From the image obtained by imaging the first incident light from the optical device with the imaging device, the position of the optical axis center of the first incident light incident on the imaging device is detected,
Using the detected pixel value at the center of the optical axis of the first incident light as a reference value, the peripheral light amount unevenness of the image obtained by imaging the second incident light from the optical device with the image sensor is made uniform. to correct,
A display method for an image pickup apparatus. In the computer of the imaging device provided with the imaging element,
A position detection function for detecting the position of the center of the imaging element and the position of the center of the optical axis of the incident light incident on the imaging element from an image obtained by imaging incident light from an optical device by the imaging element; ,
A display function for displaying the position of the center of the image sensor detected by the position detection function and the position of the optical axis center of the incident light;
A program to realize In the computer of the imaging device provided with the imaging element,
A position detection function for detecting the position of the center of the optical axis of the first incident light incident on the image sensor from an image obtained by imaging the first incident light from the optical device with the image sensor;
An image obtained by imaging the second incident light from the optical device with the image sensor using the pixel value at the center of the optical axis of the first incident light detected by the position detection function as a reference value. An image processing function that uniformly corrects unevenness in the amount of ambient light,
A program to realize

Images