JP6547219B2 - Dental imaging system - Google Patents

Description

  The present invention relates to an apparatus for processing a dental image, and more particularly to a dental image processing apparatus for facilitating diagnosis assistance in dentistry by adjusting at least one of the size, brightness and form of a panoramic x-ray image of the dental. .

  In the field of dental treatment, it is widely practiced to take panoramic x-ray images covering the entire area of the teeth. At that time, panoramic radiographs can support the diagnosis of dentists, but their application is also rapidly developing for computer aided diagnosis (CAD, Computer aided diagnosis / detection), and furthermore, images can be remotely It is also put to practical use to send diagnostic information to medical specialists (interpreters).

  Here, in order to further popularize CAD and remote image diagnosis, it is desirable that dental digital X-ray images conform to a file format called Digital Imaging and Communication in Medicine (DICOM), which is an international standard of medical images. In the case of the DICOM format, information called a tag is attached to image data, and various valid information is given to the image reader along with the image, so diagnosis support can be more appropriately performed. In particular, the size of one pixel and the number of pixels constituting an image can be written in the tag, and the actual dimensions of the diagnosis site can be grasped from the displayed image, so CAD and remote image diagnosis can be performed efficiently. It can be done.

  However, a large number of panoramic X-ray images other than the DICOM format, for example, bmp and jpg, exist, and these images are also required to be compatible with CAD and remote image diagnosis.

  Therefore, for panoramic x-ray images of various types, the image dimensions, lightness (brightness and density), and form are normalized or standardized to measure the absolute value of the dimension of each part of the image, and other images It is desirable to be able to carry out the contrast with the above easily and without error.

  For example, in addition to basic dental diseases such as periodontal disease from dental panoramic X-ray images, measuring the thickness of mandibular cortical bone is also used to help diagnose whether osteoporosis is suspected or not. In that case, the absolute value of the dimension of the thickness of the cortical bone is an important diagnostic support item.

  In addition, with regard to lightness, there are known lesions in which the lightness of the image is high (such as tooth germ) and lesions in which the lightness is low (such as inflammation), and in order to assist them in appropriately diagnosing them. It is extremely effective to normalize or standardize the lightness.

  As a technique corresponding to them, in the panoramic X-ray imaging apparatus of Patent Document 1, a technical idea of an apparatus incorporating density correction means such as raising and lowering a tube voltage at the time of imaging is disclosed.

  However, there is no document disclosing a technical idea for supporting diagnosis by normalizing or standardizing dimensions or forms of various types of images for dental panoramic x-ray images.

JP, 2008-073395, A International Publication No. 2012/128121

  However, in the panoramic X-ray imaging apparatus of Patent Document 1, the means for correcting the image already captured by various different devices is not disclosed.

  Therefore, in order to solve the above problems, the present invention provides a dental panoramic X-ray image processing apparatus capable of normalizing at least one of size, brightness, and shape of dental panoramic X-ray images regardless of the format. Was an issue.

  In order to solve such problems, the present invention is a dental image processing apparatus that processes an image such as a panoramic X-ray image of a dental, and adjusts an image such as a panoramic X-ray image captured by an imaging device that captures a dental area. It is characterized by having an image adjustment unit.

  The dental image processing apparatus according to the above configuration includes, as an image adjustment unit, an image dimension adjustment unit that adjusts the dimensions of the image. Furthermore, the image dimension adjustment unit may be characterized by converting the image outer dimension into a predetermined dimension.

  According to this, it is possible to display an image captured by any imaging device or image format with the same dimensions by converting the image external dimensions, in particular, the lateral dimensions to about 300 mm. Can be very helpful in supporting the diagnosis in dentistry.

  In the present invention, the image adjustment unit may include an image brightness adjustment unit that adjusts the brightness of the image.

  According to this, in order to convert an image into a predetermined brightness, an image captured by any imaging device or image format can be displayed with the same brightness, and it is highly useful for supporting diagnosis in dentistry. Help.

  In the present invention, the image adjustment unit may include an image form adjustment unit that adjusts the form of an image.

  According to this, when the form of the image is defective, it can be adjusted (corrected), and the form of the image can be made more normal even if it is an image captured by any imaging device or image format. It can be displayed close to you, and it is very useful to support the diagnosis in dentistry.

  In addition, with the defect of the form of the image, for example, the whole image is biased either to the left or right, the dentition is contracted to form a U-shape, the dentition extends to a letter shape, Although the case of etc. is considered, it is not limited to this.

Moreover, in the present invention, it is a dental diagnosis support system that supports dental diagnosis by an image,
-Imaging device for capturing a dental image-Dental image processing device for processing a captured dental image-Display device for displaying a dental image

  In the present invention, an embodiment may be a dental image processing program which causes a computer to execute image adjustment means for adjusting an image photographed by a photographing device for photographing a dental area.

  In this way, the present invention can be realized by a program regardless of the configuration of the apparatus.

  In the dental image processing apparatus according to the present invention, at least one of the size, the brightness and the form is normalized and displayed regardless of the type of the imaging apparatus or the image format. Demonstrate a great deal of support.

It is a block diagram of the dental image processing device concerning one embodiment of the present invention. It is operation | movement explanatory drawing of the dental image processing apparatus which concerns on one Embodiment of this invention. It is explanatory drawing of the image pre-processing of the dental image processing apparatus which concerns on one Embodiment of this invention. It is an example of a panoramic X-ray image of DICOM format used to explain the present invention. It is an example of a panoramic x-ray image of a format other than DICOM used to explain the present invention. It is an example of the image dimension-adjusted by the dental image processing apparatus which concerns on one Embodiment of this invention. It is another example of the image dimension-adjusted by the dental image processing apparatus which concerns on one Embodiment of this invention. It is explanatory drawing of the pre-processing of the image brightness adjustment method of one Embodiment of this invention. It is explanatory drawing of an example of the image brightness adjustment method of one Embodiment of this invention. It is explanatory drawing of another example of the image brightness adjustment method of one Embodiment of this invention. It is explanatory drawing of another example of the image brightness adjustment method of one Embodiment of this invention. It is explanatory drawing of the example of the image form of one Embodiment of this invention. It is explanatory drawing of the adjustment method of the image form of one Embodiment of this invention. It is another explanatory view of the adjustment method of the picture form of one embodiment of the present invention.

  Hereinafter, a dental image processing apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following, the range necessary for the description of achieving the object of the present invention is schematically shown, the range necessary for the description of the corresponding part of the present invention is mainly described, and the description is omitted. It shall be based on a well-known technique.

  FIG. 1 is a block diagram of a dental image processing apparatus 1 according to an embodiment of the present invention. As shown in the figure, the dental image processing apparatus 1 includes at least computer resources such as the first interface 11, the CPU 12, the memory 13, and the second interface 16, and the specific form is a server or the like. The computer resource may be a personal computer or a cloud using the Internet.

  The first interface 11 is used to connect with an imaging device 2 such as a panoramic X-ray imaging device for capturing a dental image of a patient or the like by wire and / or wirelessly. The CPU 12 is used to execute image processing and the like. The memory 13 is used to store programs, data and the like.

  Here, the image adjustment unit 14 is incorporated in the memory 13. The image adjustment unit 14 adjusts an image captured by the imaging device 1 and provided via the first interface 11.

  The image adjustment unit 14 includes at least one of an image dimension adjustment unit 141 that adjusts the dimensions of the image, an image brightness adjustment unit 142 that adjusts the brightness of the image, and an image form adjustment unit 143 that adjusts the form of the image.

  An image storage unit 15 is provided in the memory 13. The image adjusted by the image adjustment unit 14 is stored (stored) in the image storage unit 15 as needed. However, depending on the situation, the image before adjustment from the photographing apparatus 1 may be stored. .

  The second interface 16 is used for wired and / or wireless connection with the display device 3 that displays an image photographed by the photographing device 1 or adjusted by the image adjustment unit 14.

Here, the operation and operation of the dental image processing apparatus 1 having such a configuration will be described.
FIG. 2 is an operation explanatory view of a dental image processing apparatus according to an embodiment of the present invention.

<Image shooting>
First, an image of a dental region is captured by a panoramic X-ray imaging device, which is an example of the imaging device 1. (Step S01)

<Image capture>
Next, the captured dental panoramic x-ray image is taken into the dental image processing apparatus 1 through the first interface 11. (Step S02)
Further, it is provided to the image size adjustment unit 141 of the image adjustment unit 14 inside the memory 13. Depending on the situation, an image which has been photographed in advance and stored in the image storage unit 15 may be extracted.

<Image pre-processing>
FIG. 3 is an explanatory view of the image preprocessing of the dental image processing apparatus according to the embodiment of the present invention. Perform pre-processing to cut the margins (portions without information) present at the top and bottom of the image. (Step S03)
First, it is determined from the pixel values in the top row (horizontal direction) of the image whether the row is an image or a margin. (FIG. 3a) If it is determined that it is a margin, the determination of whether it is a margin is repeated sequentially for the lower row, and if it is determined that it is an image first (FIG. 3b), the upper row is cut . (FIG. 3c) Since the margin may occur at the lower end, the same process is performed from the lower end. Furthermore, the margin is not limited to white but may be black.

Specifically, an example of the condition for determining that each line is a margin is as follows.
When the threshold value of the pixel value is t, the ratio is α, and the maximum pixel value of the entire image is max (for example, t = 30, α = 80, max = 4095).
(1) In the target row, when the pixel value of a pixel of α% or more is less than t, the row is determined to be a margin (black).
(2) In the target row, when the pixel value of a pixel of α% or more is larger than (max−t), the row is determined to be a margin (white).

Furthermore, assuming that the horizontal width of the image after deleting the margin is w and the vertical width is h in the processes of (1) and (2), if the condition of h ≧ 0.75 w is satisfied, the following (3) and The condition of (4) may be added.
(3) In the vicinity of the center of each line (a range of 1⁄4 from the center of the image), when the value of a pixel of α% or more is less than t, the line is determined to be a margin (black).
(4) In the vicinity of the center of each row (a range of 1⁄4 from the center of the image), when the value of a pixel of α% or more is larger than (max−t), the row is determined to be a margin (white).

  The methods (3) and (4) are useful in the case of an image in which a minute density is attached to the left and right edges of the image and the margin can not be determined correctly. By these methods (1) to (4), an image from which unnecessary margin portions are deleted can be obtained.

  In addition, said numerical value is an illustration and is not limited to this, It shall be changed according to the implementation condition.

<Image size adjustment>
Next, dimension adjustment of the image is performed. (Step S04)
In the case of the DICOM format that is commonly used in dentistry, the image captured by the panoramic X-ray imaging apparatus typically has 3000 pixels in the horizontal direction and 1500 pixels in the vertical direction for the panoramic image. Since the size of one pixel is about 0.1 mm, the displayed dimension is about 300 mm in the horizontal direction and about 150 mm in the vertical direction.

  For example, in the example of the panoramic X-ray image of the DICOM format shown in FIG. 4, according to the tag information attached to the image, the horizontal pixel count K is 3444 pixels, the pixel interval is 0.0875 mm, The visual field) is calculated to be 3444 × 0.0875 = 301.35 mm, which is approximately 300 mm.

  However, images are often stored in commonly used formats such as bmp and jpg. For example, in the example of a panoramic X-ray image of a format other than DICOM shown in FIG. 4, as shown in the figure, the number of horizontal pixels such as 1244, 2120, 2144, 2790, 2836, 2852, 2860 is used. ing. When these images are displayed, the images are adjusted to be about 300 mm in the horizontal direction.

  One of the specific methods is a method using affine transformation. Assuming that coordinates before conversion are (x, y) and coordinates after conversion are (x ', y'), the affine transformation can be expressed as follows.

Here, a, b, c, d, e, and f are parameters of affine transformation, and in order to perform scaling while fixing the aspect ratio, the parameters may be set as follows.
a = S, b = 0, c = 0, d = 0, e = S, f = 0
Here, S = 3000 / r (r is the number of pixels in the horizontal direction before conversion).
As a result, the number of pixels in the horizontal direction of the panoramic X-ray image after conversion is normalized (standardized) to 3000 pixels, and the pixel interval is about 0.1 mm. An example of the image which carried out the size adjustment in FIG. 6 is shown. The left side of the figure is before adjustment, and the right side is after adjustment, but as a result of adjustment, the horizontal dimension W of all panoramic X-ray images is displayed with the same size of 300 mm.

  Here, pixel values are generated for the new pixels by the method of linear interpolation. Specifically, for example, pixel values after conversion are obtained by weighted averaging according to distance from pixel values at four places in the vicinity before conversion, and a smooth image that is not mosaic-like can be obtained. The number of peripheral points for which the weighted average is calculated is not limited to four, and may be selected as needed, such as two or sixteen.

  The same effect can be obtained by using the nearest neighbor method, sinc interpolation, cubic interpolation or the like besides linear interpolation. In particular, where the pixel value changes rapidly, the nearest neighbor method can more faithfully express the change and may be useful.

Another specific method is to adjust the pixel spacing. That is, assuming that the number of pixels in the horizontal direction of the panoramic X-ray image is 3000 and the FOV is 300 mm as a standard image, the pixel interval is adjusted according to the ratio of the number of pixels in the horizontal direction of the standard image and the real image, Assuming that the number of horizontal pixels before conversion is r, the pixel interval p can be estimated as follows.
p = 3000 / r × 0.10
FIG. 7 shows an image of a method of dimension adjustment for adjusting the pixel interval. If this number of pixels and the pixel interval are used, the horizontal direction will be displayed at about 300 mm. For example, in the case of an image with 1244 pixels in the horizontal direction, the pixel interval is 0.24 mm, and if it is used for display, 300 mm in the horizontal direction can be displayed.

  As a method of adjusting the dimensions of the image, any one of these methods is preferable, but other methods may be used.

<Image brightness adjustment>
Next, the photographed panoramic X-ray image is also provided to the image brightness adjustment unit 142 of the image adjustment unit 14. The panoramic X-ray images taken have different brightness, and there is a possibility that accurate information can not be provided for remote diagnosis support.

  With regard to the adjustment of lightness, adjustments such as overall brightness, contrast, level correction, etc. are performed as necessary. (Step S05)

  The amount of correction is determined and adjusted by comparing the brightness of the entire image or a predetermined part of the image with the brightness of the reference image. Note that the adjustment may be performed not by comparison with the reference image but by absolute brightness.

  FIG. 8 is an explanatory diagram of the pre-processing of the image brightness adjustment method according to the embodiment of the present invention. Here, the left and right margins are excluded as out of the lightness adjustment range. The specific method is the same as the image correction method described above. In this case, not only the white area but also the black area or the portion of the highest luminance value that is possibly metal may be excluded.

  FIG. 9 is an explanatory diagram of an example of the image brightness adjustment method according to the embodiment of the present invention. This is called histogram matching. Here, the histogram represents the pixel value of each pixel of the dental panoramic image on the horizontal axis, and the appearance frequency on the vertical axis. The histogram of the pre-adjustment image G1 is indicated by H1. On the other hand, the average histogram (average of the histogram) of panoramic images of appropriate brightness accumulated so far is shown by the model histogram H2. Here, when the pixel value of each pixel is changed so that the histogram H1 of the unadjusted image G1 approximates the model histogram H2, the adjusted image G2 is obtained. In this case, the before-adjustment image G1 is shifted to a slightly dark direction, and the sharpness of the after-adjustment image G2 is improved in the region around the teeth which is unclear.

  As a model histogram, an average histogram may be calculated for each specific facility (hospital) or apparatus, or a Gaussian (normal) distribution may be used as a model instead of the average histogram.

FIG. 10 is an explanatory diagram of another example of the image brightness adjustment method according to the embodiment of the present invention. This is a further refinement of the method described above, in which an area that is an index of lightness in a dental panoramic image is specified to obtain a pixel value, and the histogram is adjusted so that the pixel value matches the model histogram. How to The method is as follows.
(1) The mandible contour 102 is detected on the dental panoramic image. This utilizes the method of Patent Document 2.
(2) The hard palate position 101 is detected on the dental panoramic image. This utilizes various existing methods. Patent Document 2 discloses a technique for detecting the position of the maxillary sinus from the atlas of the mandible and the atlas of the maxillary sinus, and a method of detecting the position of the hard palate by generating the atlas of the hard palate instead of the maxillary sinus. It can be mentioned.
(3) Based on the above detection results, set ROIs (regions of interest) 103a and 103b for assisting diagnosis of a lesion or the like. Usually, there are often two places on the left and right.
(4) The representative pixel value is obtained from each ROI. As the representative pixel value, for example, an average value, a median value, a mode value or the like is used. Adjust the histogram so that these pixel values match the model's histogram. This method also has existing ones, and it should be used. In this way, an image of appropriate lightness (grayscale value) can be obtained in the ROI.
As illustrated, the portion 105 of the neck posterior to the mandible corresponds to the dark portion of the histogram. Also, if the tooth area 104 is specified, metal detection is performed, and it is excluded from the histogram, the influence of the metal of the tooth on the lightness can be eliminated.

  In addition, the area | region used as the parameter | index of lightness is not limited to the site | part of FIG. 10, You may select suitably the site | part which has a characteristic in lightness. FIG. 11 is an explanatory view of still another example of the image brightness adjustment method according to one embodiment of the present invention, and includes temporal region, metal, mandibular corner bone, mental foramen bone, molar dental crown , Lower jaw, pharyngeal airway may be included. Also, the ROIs of the individual regions may be designated directly on the screen by the user using an input device (mouse, pen tablet, etc.). Here, for example, the brightness adjustment is performed by displaying these measured pixel values in% with the pixel value 255 as a reference (100%) or in% with a metal part as a reference (100%). You may

  As for level correction, gamma correction for correcting the middle range of brightness and darkness, or a method for correcting highlights and shadows is widely put to practical use, and these may be selected and adopted.

<Image form adjustment>
Furthermore, the photographed panoramic X-ray image is also provided to the image form adjusting unit 143 of the image adjusting unit 14. Here, adjustment (correction) of the form of the image is performed. (Step S06)
Some of the panoramic X-ray images that have been taken may be malformed, and there may be a possibility that accurate information can not be provided in remote diagnosis support.

  FIG. 12 is an explanatory diagram of an example of an image form according to an embodiment of the present invention. Defective image form means that the whole image is biased to the left or right (2) in contrast to the normal image (1), the dentition is contracted and U-shaped (3), teeth There may be a case where the row extends into a letter (4), but this is not limitative.

FIG. 13 is an explanatory diagram of an image form adjustment method according to an embodiment of the present invention. The specific adjustment method of the image form is
a. Adjust the position of the center (center) 201. (The center of the dentition is set to 1/2 of the image width W.)
b. Align the position of the occlusal surface 202. (Hmin 6 cm or more, Hmax 8 cm or less from the lower edge.)
c. Align the length L of the dentition. (13-14 cm in length between left and right second molars)
d. The form of the occlusal surface 202 is gently curved downward (conical).
Note that these numerical values are merely examples, and may be changed depending on the type of photographing, photographing mode, storage format, etc., and an optimum numerical value may be adopted according to the situation. In addition to this method, an appropriate adjustment method may be used according to the condition of the form defect.

Such adjustment method may be performed automatically by a program, or may be performed semi-automatically by intervention of a doctor or the like. FIG. 14 is another illustration of the adjustment method of the image form of one embodiment of the present invention, and in the case of semi-automatic operation,
x. Correct the height of the occlusal surface, and the length of the occlusal plane by manually entering on the screen the "median point 301", "right second molar distal point 302" and "left second molar distal point 303" of the occlusal surface And bending degree (curve) correction can be easily performed,
y. By manually inputting “lower right maxillary point 304” and “lower left maxillary point 305” of the temporomandibular joint, it is possible to easily execute correction of the inclination of the center of the image (face) and correction of the right and left balance,
There is also an advantage of.

  Here, although the image size adjustment, the lightness adjustment, and the form adjustment are performed, any one or two may be used as needed, and the order may be reversed.

<Save image>
The image adjusted at least one of the size, the brightness and the form is stored in the image storage unit 15 in the memory 13. (Step S07)
The stored images can be recalled and used as needed. The image storage unit 15 may not be built in the memory 13 of the dental image processing apparatus 1, and may be an independent storage unit in the dental image processing apparatus 1 or outside the dental image processing apparatus 1. Depending on the system configuration, it may be omitted.

<Display image>
Furthermore, the adjusted image is sent to the display 3 via the second interface 16. (Step S08)
In the display device 3, the adjusted image is displayed on the display. (Step S09)
At that time, since the size, brightness and / or form of the image are adjusted, even if there is a difference depending on the model of the photographing device 2 or even if there is a difference in the image format, the image is normal in terms of size, brightness and form Because the information is standardized (standardized) and displayed, comparison with the image to be compared can be easily performed, which greatly assists in the diagnosis using the image.

  Further, in the display device 3, besides the adjusted image, various incidental information transmitted from the imaging device 2 or via the dental image processing device 1 can be displayed together. Contribute further to support diagnosis.

  As another aspect of the present invention, as shown in FIG. 1, it is a dental diagnostic support system 100 for supporting dental diagnosis by an image, which is an imaging device 2 for capturing a dental image, and a captured dental image The system may be a system including a dental image processing apparatus 1 for processing and a display device 3 for displaying a dental image.

  Such a system can function as a series of systems from image capture to display. In this case, the imaging device 2, the dental image processing device 1, and the display device 3 may be installed at a remote place and connected via a line such as the Internet, even if they are not installed at the same place. .

  In addition, although the dental image processing apparatus 1, the imaging apparatus 2, and the display apparatus 3 have been described as being independent of one another, all or part of these may be integrated, or Even if the division of functions is different, it is not limited to the configuration as long as the function is realized as a whole.

  As still another aspect of the present invention, an image adjusting means for adjusting an image photographed by a photographing device for photographing a dental area, for example, a means including all or part of steps S02 to S09 in FIG. It may be a dental image processing program to be executed by a computer.

  According to this, it is possible to increase the predetermined effect by executing the program regardless of the configuration of the device.

  In the above description, a panoramic X-ray imaging apparatus has been described as an example of a dental imaging apparatus. However, the present invention is not limited to this, and an ordinary X-ray imaging apparatus, an imaging apparatus using MRI, CT, etc. It may be an imaging device using sound waves, or a combination thereof. Each may provide useful information to support the diagnosis.

1 dental image processing apparatus 11 first interface 12 CPU
13 Memory 14 Image Adjustment Unit 141 Image Dimension Adjustment Unit 142 Image Brightness Adjustment Unit 143 Image Form Adjustment Unit 15 Image Storage Unit 16 Second Interface 2 Imaging Device 3 Display Device 100 Dental Diagnosis Support System

Claims (8)

A dental image processing apparatus for processing dental images, as an image adjustment unit for adjusting an image captured by an imaging device for capturing a dental area, an image dimension adjustment unit for adjusting image dimensions and brightness of the image possess the image brightness adjusting unit for the image brightness adjusting section, the pixel value of the average pixel so as to approximate the model histogram is a histogram of the image of proper brightness accumulated histogram of the image so far The mandibular contour and the hard palate position are detected on the image, and the region of interest is determined based on the detection result, and the representative pixel value of the region of interest is determined so that the representative pixel value matches the model histogram. Adjusting the histogram to at least one of adjusting the brightness of the image.   The dental image processing apparatus according to claim 1, wherein the image size adjustment unit converts the image outer size into a predetermined size. A dental image processing apparatus for processing dental images, as an image adjustment unit for adjusting an image captured by an imaging device for capturing a dental area, an image dimension adjustment unit for adjusting image dimensions and an image configuration It possesses an image configuration adjustment unit for the image configuration adjustment unit established a position of midline, align the position of the occlusal surface, aligning the length of the teeth, convex curve of the lower gently the form of the occlusal surface A dental image processing apparatus characterized by adjusting the form of the image by   The dental image processing apparatus according to claim 3, wherein the image size adjustment unit converts the image outer size into a predetermined size. A dental diagnosis support system for supporting dental diagnosis by image, comprising:
-Imaging apparatus for capturing a dental image-Dental image processing apparatus for processing a captured dental image, the dental image processing apparatus having an image adjustment unit for adjusting an image captured by the imaging apparatus for capturing a dental region- have a display device for displaying the dental images, the image adjustment unit, and an image brightness adjusting portion that adjusts the brightness of the image size adjustment unit and an image for adjusting the size of the image, the image brightness adjusting section, Change the pixel values of each pixel to approximate the model histogram, which is the average histogram of the images of proper brightness accumulated so far, or the mandible contour and hard palate position on the image A region of interest is determined based on the detection result and the representative pixel value of the region of interest is determined based on the detection result, so that the representative pixel value matches the model histogram. Adjusting, adjusts the brightness of the image by at least one of the dental diagnosis support system. A dental diagnosis support system for supporting dental diagnosis by image, comprising:
-Imaging apparatus for capturing a dental image-Dental image processing apparatus for processing a captured dental image, the dental image processing apparatus having an image adjustment unit for adjusting an image captured by the imaging apparatus for capturing a dental region- have a display device for displaying the dental images, the image adjustment unit may have a image form adjuster for adjusting the form of the image size adjustment unit and an image for adjusting the size of the image, the image configuration adjustment unit, established a position of midline, align the position of the occlusal surface, aligning the length of the teeth, to adjust the form of the image by the curve gently in downward convex form of the occlusal surfaces, dental diagnosis support system. A dental image processing program that causes a computer to execute image adjustment means for adjusting an image taken by a photographing device for photographing a dental area, the dental image processing program comprising
The image adjustment unit includes an image size adjustment unit that adjusts the dimensions of the image and an image brightness adjustment unit that adjusts the brightness of the image, and the image brightness adjustment unit stores the histogram of the image so far. Change the pixel value of each pixel to approximate a model histogram that is an average histogram of an image of appropriate brightness, or detect the mandible contour and hard palate position on the image, and based on the detection result, the region of interest Operating the computer to adjust the lightness of the image by at least one of determining and determining a representative pixel value of the region of interest and adjusting the histogram such that the representative pixel value matches the model histogram. Dental imaging program, characterized by A dental image processing program that causes a computer to execute image adjustment means for adjusting an image taken by a photographing device for photographing a dental area, the dental image processing program comprising
The image adjustment unit includes an image dimension adjustment unit that adjusts the dimensions of the image and an image form adjustment unit that adjusts the form of the image, and the image form adjustment unit arranges the middle position and positions the occlusal surface Dental image processing program characterized by causing a computer to function so as to adjust the form of the image by aligning the length of the row of teeth and making the form of the occlusal surface gently a downward convex curve .

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