Bidirectional mirror display for a dental treatment system

Abstract

A system and method for acquiring dental X-ray images using a bidirectional mirror display for patient self-positioning. The system includes a camera configured to capture images of a patient, a display, a bidirectional mirror positioned between the patient and the display, and an electronic processor. The electronic processor is configured to select an operating mode of the display based on user input; and to display at least one image on the display based on the selected operating mode. The method includes: receiving image data from the camera; identifying at least one facial feature of the patient in the image data; determining, based on the at least one facial feature, whether the patient's face is aligned with at least one anatomical plane; and displaying at least one motion guide on the display based on the determined alignment of the patient's face.

Description

Background Technology

[0001] Many dental procedures involve imaging a patient's teeth using a camera or other image-acquiring device such as an X-ray or optical scanner. Imaging results in the generation of an image. Depending on the type of image-acquiring device used and the procedure being performed, the patient may be standing, sitting, or lying on the operating table during X-ray image acquisition.

[0002] X-ray image acquisition procedures can be challenging. In many cases, precise and static patient positioning is required to capture high-quality, accurate images of the anatomical region of interest. Patient movement may result in images of areas other than the desired anatomical region of interest. Patient movement may also degrade image quality. Shaking, vibration, talking, or other patient movement may produce blurry or other low-quality images. In some cases, patients may feel fear, anxiety, or fatigue. Patients may move back and forth, move away from the desired patient position, or not remain in the desired position for a sufficient period to complete the X-ray image acquisition. In some cases, patients may feel isolated and feel that they are receiving inappropriate feedback from the dentist or dental technician regarding the acquired images or the patient's position. Therefore, dentists or dental technicians must frequently attempt to precisely position the patient during X-ray image acquisition while also addressing their patients' anxiety and interpersonal communication needs. Summary of the Invention

[0003] Therefore, a system is needed to assist in patient positioning for proper X-ray image acquisition. Proper patient positioning and maintaining the correct position throughout the X-ray image acquisition procedure result in images with better image quality and fewer positioning error artifacts. Better images enable faster and more accurate treatment planning, reduce the need for repeated image acquisitions, and increase the efficiency and throughput of X-ray image acquisition in dental facilities.

[0004] The system described herein (in particular) helps to correct inexperienced system operators, such as novice dental technicians, who may not be adequately trained in the operation of dental X-ray image acquisition systems. By providing self-positioning guidance to the patient, the impact of the operator's lack of experience on acquiring high-quality images is mitigated.

[0005] Patient satisfaction has also improved. In some embodiments, the patient plays an active role in self-localization during X-ray image acquisition. Self-localization allows the patient to be more relaxed and engaged during the imaging procedure, which reduces patient-induced errors in the images produced during the procedure. Furthermore, some embodiments provide patient-specific workflows to accommodate specific patient needs. In one instance, larger graphics or more text are provided to assist patients with visual or hearing impairments in self-localization during the image acquisition procedure. In another instance, instructions are provided in their native language to patients who only speak one language to better facilitate communication with them.

[0006] One embodiment provides a dental X-ray image acquisition system. The system includes: at least one camera configured to capture images of a patient; a display configured to display the images; a bidirectional mirror positioned between the patient and the display; and an electronic processor coupled to the camera and the display, the electronic processor being configured to control the display and the camera.

[0007] Another embodiment provides a dental X-ray image acquisition system. The system includes: a camera configured to capture images of a patient; a display; a bidirectional mirror positioned between the patient and the display; and an electronic processor coupled to the camera and the display, the electronic processor being configured to select an operating mode of the display based on user input and to display at least one image on the display based on the selected operating mode.

[0008] Another embodiment provides a method for locating a patient for X-ray image acquisition. The method includes: receiving image data from a camera using an electronic processor; identifying at least one facial feature of the patient in the image data using the electronic processor; determining, based on the at least one facial feature, whether the patient's face is aligned with at least one anatomical plane using the electronic processor; and displaying at least one motion guide on a display using the electronic processor based on the determined alignment of the patient's face. Attached Figure Description

[0009] The accompanying drawings, together with the detailed description below, are incorporated in and form part of the specification, and are used to further illustrate embodiments incorporating the concepts of the claimed invention and to explain the various principles and advantages of those embodiments. In the drawings, the same reference numerals in separate views always refer to the same or functionally similar elements.

[0010] Figure 1A A system for imaging a patient is shown according to one embodiment.

[0011] Figure 1B An x-ray imaging system according to one embodiment is shown.

[0012] Figure 1C An x-ray imaging system according to one embodiment is shown.

[0013] Figure 2 A display device according to one embodiment is shown.

[0014] Figure 3A A positioning guide comprising a midsagittal plane guide overlaid on an image of the patient, according to one embodiment, is shown.

[0015] Figure 3B A positioning guide and a movement guide comprising a midsagittal plane guide overlaid on an image of the patient, according to one embodiment, are shown.

[0016] Figure 4A A first example of a positioning guide according to one embodiment is shown.

[0017] Figure 4B A second example of a positioning guide according to one embodiment is shown.

[0018] Figure 4C A third example of a positioning guide according to one embodiment is shown.

[0019] Figure 5 A process indicator and a location guide are shown according to one embodiment.

[0020] Figure 6 This is a flowchart illustrating a method for locating a patient for acquiring X-ray images according to one embodiment.

[0021] The apparatus and method components have been represented by conventional symbols in the drawings where appropriate, showing only those specific details relevant to understanding embodiments of the invention so as not to obscure this disclosure by details that are obvious to one of ordinary skill in the art to which this description pertains. Detailed Implementation

[0022] For ease of description, some or all of the example systems presented herein are illustrated by a single instance of each of their components. Some instances may not describe or illustrate all components of the system. Other example embodiments may include more or fewer of each of the illustrated components, may combine some components, or may include additional or alternative components.

[0023] Figure 1 illustrates a system 100 according to one embodiment for imaging a patient 105 located at a patient position P1. The system 100 includes at least one camera 110, a bidirectional mirror 115, and a display 120. The bidirectional mirror 115 is positioned between the patient position P1 and the display 120. The system 100 also includes an electronic processor 125, a non-transitory computer-readable storage 130, and a human-machine interface 135. As its name suggests, one side of the bidirectional mirror 115 is reflective, and the other side is transparent. As explained in more detail below, unidirectional transmission perception is achieved when one side of the mirror is brightly illuminated while the other side is dark. This allows viewing from the darkened side, rather than from the brightly illuminated side.

[0024] In some embodiments, the system 100 for imaging the patient 105 is coupled to an X-ray imaging system, or otherwise implemented together with an X-ray imaging system. Figure 1B and 1C An example of an X-ray imaging system 140 is shown. The X-ray imaging system 140 includes a column 145 that extends vertically from, for example, a frame or the ground. In some embodiments, the column 145 may be vertically (e.g., telescopically) adjustable.

[0025] The X-ray imaging system 140 further includes an upper support 150 (e.g., an arm or top support member) which can be rotatably coupled to or fixed to a specific point on the column 145, typically at the upper end of the column 145. In the illustrated embodiment, the upper support 150 is oriented in a direction perpendicular (e.g., horizontal) to the column 145. In other embodiments, the X-ray imaging system 140 includes a housing coupled to the column, and the upper support is instead rotatably coupled to the housing.

[0026] Continue reading Figure 1B and 1C The X-ray imaging system 140 further includes a rotating portion 155 (e.g., an arm or gantry arm) connected to an upper support 150. The rotating portion 155 shown is generally C-shaped, but other embodiments include other shapes. The rotating portion 155 includes an X-ray source 160 at one end of the rotating portion 155. Figure 1B (shown schematically in the diagram), and detector unit 165 at the opposite end of the rotating portion 15 .... Figure 1B and Figure 1C (Both are schematically shown) such that the patient 105's head can be positioned therein to generate a panoramic computed tomography or cephalometric image (e.g., providing data for said image). For example, Figure 1B Examples of panoramic or computed tomography imaging are shown, while Figure 1C An example of cephalometric imaging is shown.

[0027] In some embodiments, the X-ray imaging system 140 further includes at least one cephalometric arm 170 coupled (e.g., rotatably coupled) to the column 145. The cephalometric arm 170 has a distal end with a second X-ray source 175 for use in cephalometric imaging. Figure 1C As shown, the rotating portion 155 includes a collimator 180 such that when the second X-ray source 175 is activated, the X-ray beam is transmitted via the collimator 180 to the detector unit 165. In some embodiments, with two X-ray sources (X-ray source 160 and X-ray source 175) present, the upper support 150 may optionally pivot via the rotating portion 155, but the ability of the upper support 150 to pivot is not required; in fact, the upper support 150 may be in a fixed position. In other embodiments, two X-ray sources are not used. In these embodiments, X-ray source 160 is used, for example, for CT, panoramic imaging, and cephalometric imaging. In some embodiments, CT image data collected from X-ray source 160 can be used to synthesize cephalometric images.

[0028] Continue reading Figure 1B and 1C In the illustrated embodiment, the X-ray imaging system 140 further includes a lower support 185 coupled to the column 145. In some embodiments, the lower support 185 is fixed to the column 145, while in other embodiments, the lower support is rotatably coupled to the column 145. The lower support 185 provides additional support for the head (e.g., chin) of the patient 105. Other embodiments do not include a lower support, or include a lower support other than that shown.

[0029] Although not shown, in some embodiments, the X-ray imaging system 140 includes one or more additional arms having another patient support structure (e.g., an ear or nose support) for supporting the patient's head during cephalometric imaging, and / or includes a seat so that the patient can be seated (instead of standing) during one or more of panoramic, computed tomography, or cephalometric imaging.

[0030] Continue reading Figure 1B and 1CAt least one of the camera 110, the bidirectional mirror 115, and the display 120 is coupled (e.g., rigidly attached or rotatably coupled) to the post 145, or coupled to another component of the X-ray imaging system 140 (e.g., the upper support 150 or the rotating portion 155). In the illustrated embodiment, the display 120 (which is schematically shown and includes the camera 110) is fixed to the post 145. The bidirectional mirror 115 (also schematically shown) is fixed in a suitable position in front of the display 120, such that the display is positioned between the outside of the post 145 and the bidirectional mirror 115. In some embodiments, fasteners or other structures are used to secure the display 120 and / or the bidirectional mirror 115 in place. In some embodiments, the display 120 and / or the bidirectional mirror 115 is integrated into the post 145 itself. In other embodiments, the display and / or the bidirectional mirror 115 is spaced apart from the post 145. For example, in some embodiments, the display 120 and / or the bidirectional mirror 115 are coupled to their own individual pillars, which are spaced apart from pillar 145 and extend from the frame or the ground, similar to pillar 145.

[0031] During use, and as further described below, the bidirectional mirror 115 is positioned in front of the patient 105’s face to help align the patient 105 for imaging by the X-ray imaging system 140.

[0032] Return to Figure 1A Camera 110 is used to capture image data of patient 105. In some embodiments, camera 110 may be located above bidirectional mirror 115. In other embodiments, camera 110 may be located behind bidirectional mirror 115 and configured to capture images via bidirectional mirror 115. Camera 110 may also be a three-dimensional (“3D”) camera. A 3D camera may be a stereo camera or multi-camera setup based on stereo triangulation, or a camera with stereo lenses. A 3D camera may also be a ranging camera operating according to any ranging imaging technique, such as stereo triangulation, light sheet triangulation, structured light, time-of-flight, interferometry, coded aperture, or any other ranging imaging technique.

[0033] The bidirectional mirror 115 reflects and transmits light through both sides of the bidirectional mirror 115. The brighter side of the bidirectional mirror indicates what the user of the bidirectional mirror 115 sees. For example, if a patient is looking at the patient-side surface 116 of the bidirectional mirror 115 and the light on the patient-side surface 116 is brighter than the light on the display-side surface 117, then the patient 105 sees the bidirectional mirror 115 as a regular mirror reflecting the patient 105. In contrast, if the light on the display-side surface 117 is brighter than the light on the patient-side surface 116, then the patient can see through the bidirectional mirror 115 to observe objects on the display-side surface 117 (e.g., display 120).

[0034] Display 120 may be, for example, a computer monitor, a tablet computer, or other electronic display configured to display (e.g., imaging) a user interface, alignment lines, and other visual objects to patient 105. Assuming that the lighting conditions in the patient environment (e.g., a dental clinic) remain constant, the brightness of display 120 controls what patient 105 sees in or through bidirectional mirror 115.

[0035] Figure 2 An example of display 120 is shown. Display 120 may include camera 110, one or more lamps 205-206, primary display area 210, sensor 215, and optionally at least one laser 220.

[0036] As described above, camera 110 may be located behind bidirectional mirror 115 and may be a component of display 120. For example, if display 120 is a tablet computer, camera 110 may be an integrated camera of the tablet computer. The one or more lamps 205-206 are configured to provide light to a dental specialist examining patient 105. In some embodiments, the one or more lamps 205-206 are not components of display 120, and display 120 is instead configured to provide light to patient 105 via bidirectional mirror 115, as described below.

[0037] The primary display area 210 is used to display various informational graphics to the patient 105. The sensor 215 can be a variety of different sensors, such as an ambient light sensor, an IR sensor, a LiDAR sensor, or other sensors. The at least one laser 220 is used to assist in detecting and locating the patient 105. In embodiments without a laser, a virtual line can be drawn on the display 120 to assist in patient positioning and alignment. Each of these elements can be located behind the bidirectional mirror 115.

[0038] The display 120 can operate in various modes to control what the patient 105 can see. The first mode is mirror mode. Mirror mode is in operation when the display 120 cuts off or displays a low-intensity dark background image. For example, the dark background image can be pure black, dark blue, dark brown, or another suitable dark color. Because the brightness of the display 120 is much lower on the patient-side surface 116 of the bidirectional mirror 115 than on the display-side surface 117, the bidirectional mirror 115 acts as a regular mirror reflecting the face of the patient 105.

[0039] The second mode of the display 120 is a light mode. In light mode, the display 120 outputs a high-intensity white image, and the bidirectional mirror 115 transmits light from the image to the patient 105, thereby allowing the display 120 to be used by dental professionals as a conventional lighting element.

[0040] The third mode of the display 120 is monitor mode. In monitor mode, the display 120 outputs the captured images and functions as a normal monitor to provide information to the patient 105. For example, when the display is in monitor mode, video feeds from the camera 110, dental information relevant to the patient 105, or other images or graphics are displayed on the display 120.

[0041] The fourth mode of the display is an augmented mode. In augmented mode, some portions of the display 120 output a low-intensity, completely black background, while other portions of the display 120 output high-intensity graphics. A bidirectional mirror 115 reflects the black background portion, acting like a regular mirror (e.g., allowing the patient 105 to see their own face) and also allows the graphics to shine through and be seen by the patient 105. In this way, instructions, statistics, reports, text, and other graphics can be presented to the patient 105 while still reflecting their face. The graphics provide additional information amplified on top of the patient 105's mirrored face.

[0042] In one embodiment, when operated in amplification mode, the display 120 shows a positioning guide for the patient 105 to position themselves for X-ray image acquisition via the camera 110. The positioning guide may be, for example, a midsagittal vertical guide, such as... Figure 3A The guide is positioned on the reflected face of patient 105 and provides a reference point for patient 105 to align itself for X-ray image acquisition via camera 110. In other embodiments, a movement guide is provided along with the positioning guide. For example, Figure 3B The diagram shows both a vertical guide in the midsagittal plane and a movement guide 305, shown in the shape of an arrow in this embodiment. The movement guide 305 provides guidance to the patient 105 to help align the patient 105 for scanning; for example, the movement guide 305 instructs the patient 105 to move in the direction of the arrow to properly align the patient 105 for X-ray image acquisition.

[0043] Positioning and movement guides (such as movement guide 305) can be more complex than compasses and arrows. For example, Figures 4A-4C Different examples of a positioning guide 400 according to one embodiment are shown. Motion guides 401-403 show different alignments of the patient 105's head. For example, motion guide 401 shows the alignment of the patient 105's head in a first anatomical plane, motion guide 402 shows the alignment of the patient 105's head in a second anatomical plane, and motion guide 403 shows the alignment of the patient 105's head in a third anatomical plane. In embodiments, with more cameras, more views of more anatomical planes can be captured.

[0044] To properly acquire images of patient 105, patient 105's head must be aligned in the first, second, and third anatomical planes. Movement guides 401-403 not only indicate the current alignment of patient 105's head but also provide indications of proper or improper alignment. To determine proper or improper alignment, image data from camera 110 is analyzed by electronic processor 125 to determine the patient's position. For example, facial features of patient 105 can be used to detect various relevant axes, such as the Frankfort line, back-front line, feet-head line, etc. Using later frames from the image data, an initial facial model can be registered and the axes updated using said initial facial model, thereby allowing knowledge of the current orientation of patient 105's head or face.

[0045] For example, Figure 4A A first example of a positioning guide 400 indicating misalignment of patient 105 is shown. In addition to the outline of the patient 105's head in the positioning guide 400, which provides real-time alignment information to patient 105, movement guides 401-403 also indicate that the patient 105's head is misaligned for each of the first, second, and third anatomical planes. When the patient 105's head is misaligned with the first and third anatomical planes, respectively, this indication can be achieved by displaying movement guides 401 and 403 in a first color (e.g., red). In cases where the patient 105's head is misaligned, this indication can also be achieved by displaying another visual indication, such as an "X" image, on the respective movement guides 401-403. In other embodiments, audio guidance may be provided to patient 105 based on the patient 105's alignment. In yet another embodiment, visual and audio guidance may be used in combination to position patient 105.

[0046] Figure 4B A second example of the positioning guide 400 is shown. Based on the contours provided by the positioning guide 400, which shows the current alignment of the patient 105's head, the patient 105 can reposition its head to move into alignment. As the patient 105's head aligns in each of the first, second, and third anatomical planes, the movement guides 401-403 dynamically change to indicate to the patient 105 that the head is aligned in each plane. For example, in Figure 4B In this process, the moving guides 401 and 403 change color, stop displaying alignment lines, and display check marks to indicate to the patient 105 that the head is aligned in the first and third anatomical planes. When the patient 105's head is aligned in a specific anatomical plane, portions of the positioning guide 400 may also display different colors or add or remove specific graphic elements.

[0047] Figure 4CThe third example of the positioning guide 400 is shown. Figure 4C In this configuration, the movement guides 401-403 now all indicate proper alignment of the head with each of the anatomical planes. Other parts of the positioning guide 400 may also be modified; for example, the outline of the positioning guide may be changed in color.

[0048] Once the patient 105 is properly positioned, the X-ray image acquisition procedure can begin. To help maintain proper patient positioning, in some embodiments, the display 120 shows a progress indicator (in one instance, a progress bar) in addition to the positioning guide 400. For example, Figure 5 The positioning guide 400 is shown together with the progress indicator 500. The progress indicator 500 indicates to the patient 105 how far along the X-ray image acquisition procedure so that the patient 105 knows to maintain the proper position until the procedure is complete. By remaining still during the procedure, motion artifacts are reduced. Although the progress indicator 500 is in... Figure 5 The progress indicator is shown as a progress bar, but it can be any suitable graphic to indicate the progress to the patient, such as a wheel, a text box showing the percentage of completion, or other methods of displaying progress.

[0049] In some embodiments, the display 120 is not coupled to the column of the X-ray imaging system 140. In some examples, it is connected to or coupled to other components of the X-ray imaging system 140. In other embodiments, the display 120 is located near the X-ray imaging system 140, for example, in the same room, and is communicatively coupled to the X-ray imaging system 140. In these embodiments, instead of using the display 120 to provide guidance to the patient 105 via the bidirectional mirror 115, the camera 110 captures images of the patient 105 and the faces of a second user, such as a nurse, dentist, dental hygienist, or other operator, reviews the captured images from the camera 110 on the display 120, and provides instructions to the patient 105 to properly position themselves for the X-ray imaging procedure. Very similar to the motion guides 401-403 described above, the second user of the display 120 can see the displayed motion guides on the display 120 and provide instructions to the patient 105 to position themselves based on the displayed motion guides.

[0050] Return to Figure 1AThe electronic processor 125 is electronically connected to the display 120 and the camera 110, and controls the operation of the display 120 and the camera 110 (as well as performing other functions). The electronic processor 125 may be a programmable electronic microprocessor, a microcontroller, an application-specific integrated circuit (“ASIC”), or a similar device. The electronic processor 125 may be implemented in several independent processors (e.g., programmable electronic control units) each configured to perform specific functions or sub-functions. Furthermore, the electronic processor may contain sub-modules configured to handle input / output functions, signal processing, and applications of the methods described herein.

[0051] The electronic processor 125 is also communicatively connected to the non-transitory computer-readable medium 130 and the human-machine interface 135. The electronic processor 125 is configured to retrieve data from the non-transitory computer-readable medium 130 and to execute software, in particular, related to the processes and methods described herein.

[0052] Human-machine interface 135 includes input devices, output devices, or combinations thereof. For example, human-machine interface 135 may include a display device separate from display 120, a touchscreen, a keyboard, keypad, buttons, cursor control devices, a printer, a speaker, a virtual reality headset, a microphone, etc. In some embodiments, system 100 includes multiple human-machine interfaces. For example, system 100 may include a touchscreen and a keypad. In some embodiments, human-machine interface 135 is contained within the same housing as electronic processor 125. However, in other embodiments, human-machine interface 135 may be external to electronic processor 125 but communicate with electronic processor 125 via a wired or wireless connection. As described herein, one or more human-machine interfaces 135 receive input from a user, which electronic processor 125 uses to control system 100.

[0053] Figure 6 A flowchart of a method 600 for locating a patient 105 for X-ray image acquisition according to one embodiment is shown. Method 600 includes receiving image data from a camera 110 (at block 605) using an electronic processor 125. The image data may be still images or video data. The image data includes an image of the patient 105's face.

[0054] Based on the received image data, the electronic processor 125 identifies at least one facial feature of the patient 105 (at box 610). For example, as described above, relevant axes such as the Frankfurt line, back-to-front line, or foot-to-head line can be used for facial feature recognition in the coordinate system of camera 110. An initial model is then registered using additional image data. Based on the difference between the initial frame and the current frame of the image data, the relevant axes can be updated, and the current orientation of the patient 105's head can be determined. In another instance, instead of using the difference between the initial and current frames of the image data, continuous marker detection (e.g., tracking the eyes, nose, mouth, or other facial features) can be used to obtain the current orientation of the patient 105's head.

[0055] Using the current orientation of the patient 105's head, the electronic processor 125 can determine whether the patient's face is aligned with at least one anatomical plane (at box 615). For example, as described above, the current orientation of the head can be compared with the median sagittal plane, the coronal plane, etc. Depending on the type of X-ray image acquisition being performed, the patient 105 must be aligned with multiple combinations of anatomical planes. The current orientation of the head is compared with the desired combination of anatomical planes to perform alignment.

[0056] If the current orientation of the head is aligned with all the desired anatomical planes, the electronic processor 125 is configured to display instructions to the patient 105 (at box 620) using a moving guide with alignment indicators showing the alignment to the patient 105. For example, Figure 4C This condition is shown. If the current orientation of the head is misaligned with one or more anatomical planes, the electronic processor 125 instead displays a movement guide showing the current orientation of the head relative to the respective anatomical planes, thereby allowing the patient 105 to see where their head is misaligned and to correct said misalignment. This condition is... Figure 4A As shown in the image.

[0057] If the patient is aligned with the various anatomical planes, the electronic processor 125 is configured to begin X-ray image acquisition and may also display a progress indicator to the patient 105. The progress indicator indicates the degree of completion of X-ray image acquisition, providing the patient 105 with a visual reference indicating how long they must maintain the current alignment. Once the progress indicator is complete, the patient 105 may move again. The progress indicator may also be displayed on a portion of the display 120, making it usable as a focal point for the patient 105 to maintain proper alignment. This portion of the display 120 may be determined by the electronic processor 125 before or after alignment is determined.

[0058] The following examples illustrate the exemplary systems and methods described herein. Example 1: A dental X-ray image acquisition system comprising: at least one camera configured to capture images of a patient; a display configured to display the images; a bidirectional mirror positioned between the patient and the display; and an electronic processor coupled to the camera and the display, the electronic processor being configured to control the display and the camera.

[0059] Example 2: The dental X-ray image acquisition system according to Example 1, wherein the bidirectional mirror is also positioned between the camera and the patient.

[0060] Example 3: A dental X-ray image acquisition system according to any one of Examples 1-2, wherein the camera is a component of the display.

[0061] Example 4: A dental X-ray image acquisition system based on Example 1, wherein the camera is a 3D camera.

[0062] Example 5: A dental X-ray image acquisition system, the system comprising: at least one camera configured to capture images of a patient; a display; a bidirectional mirror positioned between the patient and the display; and an electronic processor coupled to the camera and the display, the electronic processor being configured to select an operating mode of the display based on user input and to display at least one image on the display based on the selected operating mode.

[0063] Example 6: According to the system of Example 5, the operating mode is an operating mode selected from a group of operating modes consisting of mirror mode, amplification mode, light mode and monitor mode.

[0064] Example 7: In the system of Example 6, the mirror mode consists of a display showing a low-intensity dark background image.

[0065] Example 8: According to the system of Example 6, the augmented mode consists of a display showing a low-intensity dark background image in a first part of the display and at least one other image in a second part of the display.

[0066] Example 9: According to the system of Example 8, the at least one other image displayed on the display is a positioning guide for the patient.

[0067] Example 10: According to the system of Example 9, the positioning guide shows at least one moving guide for the patient.

[0068] Example 11: In the system of Example 10, the movement guide indicates the direction of movement to the patient.

[0069] Example 12: A system according to any one of Examples 10-11, wherein the moving guide indicates the alignment of the patient’s head with respect to at least one anatomical plane.

[0070] Example 13: The system according to Example 12, wherein the moving guide shows the alignment of the patient’s head relative to two or more anatomical planes.

[0071] Example 14: A system according to any one of Examples 12-13, wherein the graphic elements of the moving guide change when the patient’s head is aligned with the at least one anatomical plane.

[0072] Example 15: A method for locating a patient for X-ray image acquisition, the method comprising: receiving image data from at least one camera using an electronic processor; identifying at least one facial feature of the patient in the image data using the electronic processor; determining, based on the at least one facial feature, whether the patient's face is aligned with at least one anatomical plane using the electronic processor; and displaying at least one motion guide on a display using the electronic processor based on the determined alignment of the patient's face.

[0073] Example 16: According to the method of Example 15, the movement guide includes an indicator aligning the patient's face with the at least one anatomical plane.

[0074] Example 17: The method of Example 16 further includes using an electronic processor to display a progress indicator indicating the duration of continuous image acquisition while the patient maintains the current position.

[0075] Example 18: According to the method of Example 15, the movement guide includes an indicator that the patient's face is not aligned with the at least one anatomical plane.

[0076] Example 19: The method of any one of Examples 15-18, wherein at least one axis is detected using the at least one facial feature.

[0077] Example 20: According to the method of Example 19, the current orientation of the patient's face is determined using the at least one axis.

[0078] Specific embodiments have been described in the foregoing specification. However, those skilled in the art will understand that various modifications and changes can be made without departing from the scope of the invention as set forth in the appended claims. Therefore, the specification and drawings should be viewed in an illustrative rather than restrictive sense, and all such modifications are intended to be included within the scope of the teachings of this invention.

[0079] Benefits, advantages, solutions to problems, and any elements that could make any benefit, advantage, or solution occur or become more significant should not be construed as essential, necessary, or necessary features or elements of any or all claims. The invention is defined solely by the appended claims, which include any amendments made during the pending period of this application and all equivalents of those claims.

[0080] Furthermore, in this document, relational terms, such as first and second, top and bottom, etc., may be used only to distinguish one entity or action from another, and do not necessarily require or imply any actual such relationship or order between these entities or actions. The terms “comprise / comprising,” “has / having,” “include / including,” “contain / containing,” or any other variations thereof inherently cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes, has, contains, or contains a list of elements does not merely contain those elements, but may contain other elements not expressly listed or inherent to such process, method, article, or apparatus. Elements predicated with “comprise…,” “has…,” “include…,” or “contain…” (without further constraints) do not exclude the presence of additional identical elements in a process, method, article, or apparatus that includes, has, contains, or contains said elements. The term “a” is defined as one or more unless otherwise expressly indicated herein. The terms “generally,” “substantially,” “approximately,” “about,” or any other form thereof are defined as close to, as understood by one person of ordinary skill in the art, and in one non-limiting embodiment, the term is limited to within 10%, in another within 5%, in yet another within 1%, and in still another within 0.5%. The term “connection” as used herein is defined as a link, but not necessarily directly or mechanically. A device or structure “configured” in a certain way is configured in at least that way, but may also be configured in ways not listed.

[0081] It should be understood that some embodiments may consist of one or more general-purpose or special-purpose electronic processors (or "processing devices") such as microprocessors, digital signal processors, custom processors, and field-programmable gate arrays (FPGAs), along with unique stored-program instructions (including both software and firmware) that control the one or more electronic processors to implement some, most, or all of the functions of the methods and / or devices described herein in conjunction with certain non-processor circuitry. Alternatively, some or all of the functions may be implemented by a state machine without stored-program instructions, or in one or more application-specific integrated circuits (ASICs), wherein each function or some combinations of certain functions is implemented as custom logic. Of course, a combination of both approaches may be used.

[0082] Furthermore, embodiments may be implemented as computer-readable storage media having computer-readable code stored thereon for programming a computer (e.g., including an electronic processor) to perform the methods described and claimed herein. Examples of such computer-readable storage media include (but are not limited to) hard disks, CD-ROMs, optical storage devices, magnetic storage devices, ROMs (read-only memories), PROMs (programmable read-only memories), EPROMs (erasable programmable read-only memories), EEPROMs (electrically erasable programmable read-only memories), and flash memory. Moreover, when guided by the concepts and principles disclosed herein, those skilled in the art (although considerable effort may be required and numerous design choices exist, motivated by factors such as available time, current technology, and economic considerations) will be readily able to generate these software instructions and programs, as well as ICs, with minimal experimentation.

[0083] Furthermore, as can be seen from the foregoing detailed description, various features have been grouped together in various embodiments for the purpose of simplification. The method of this disclosure should not be construed as reflecting an intention that the claimed embodiments require more features than are expressly recited in each claim. In fact, as reflected in the appended claims, the subject matter of the invention lies in less than all the features of a single disclosed embodiment. Therefore, the appended claims are hereby incorporated into the detailed description, wherein each claim is the subject matter of a separate claim.

Claims

1. A dental X-ray image acquisition system (100), comprising: At least one camera (110) is configured to capture an image of the patient (105); A display (120) configured to display an image; A bidirectional mirror, positioned between the patient's position and the display; as well as An electronic processor (125) is connected to the camera and the display, and the electronic processor is configured to control the display and the camera; The bidirectional mirror is also positioned between the camera and the patient; and The electronic processor is further configured to Based on user input, the user selects the operating mode of the display; and Based on the selected operating mode, at least one image is displayed on the display, wherein the operating mode is an operating mode selected from a group of operating modes consisting of mirror mode, magnification mode, light mode and monitor mode.

2. The dental X-ray image acquisition system of claim 1, wherein the camera is a component of the display.

3. The dental X-ray image acquisition system according to claim 1, wherein the camera is a three-dimensional camera.

4. The dental X-ray image acquisition system according to claim 1, wherein the mirror mode consists of a low-intensity dark background image displayed on the monitor.

5. The dental X-ray image acquisition system of claim 1, wherein the amplification mode comprises the display showing a low-intensity dark background image in a first portion of the display and at least one other image in a second portion of the display.

6. The dental X-ray image acquisition system of claim 5, wherein the at least one other image displayed on the display is a positioning guide (400) for the patient.

7. The dental X-ray image acquisition system of claim 6, wherein the positioning guide shows at least one moving guide (305, 401, 402, 403) for the patient.

8. The dental X-ray image acquisition system according to claim 7, wherein the moving guide (305) indicates the direction of movement for the patient.

9. The dental X-ray image acquisition system of claim 7, wherein the movable guide (401, 402, 403) indicates the alignment of the patient's head with respect to at least one anatomical plane.

10. The dental X-ray image acquisition system of claim 9, wherein the moving guide indicates the alignment of the patient's head with respect to two or more anatomical planes.

11. The dental X-ray image acquisition system of claim 9, wherein the graphic elements of the moving guide change when the patient's head is aligned with the at least one anatomical plane.

12. A method for locating a patient for acquiring X-ray images using the dental X-ray image acquisition system according to any one of claims 1 to 11, the method comprising: Utilizes an electronic processor to receive image data from at least one camera; The electronic processor is used to identify at least one facial feature of the patient in the image data; The electronic processor uses the at least one facial feature to determine whether the patient's face is aligned with at least one anatomical plane; as well as The electronic processor displays at least one moving guide on a monitor based on the determined alignment of the patient's face.

13. The method of claim 12, wherein the moving guide includes an indicator aligning the patient's face with the at least one anatomical plane.

14. The method of claim 13, further comprising: The electronic processor displays a progress indicator that indicates the duration of continuous image acquisition while the patient remains in the current position.

15. The method of claim 12, wherein the moving guide includes an indicator that the patient's face is not aligned with the at least one anatomical plane.

16. The method of claim 12, wherein at least one axis is detected using the at least one facial feature.

17. The method of claim 16, wherein the at least one axis is used to determine the current orientation of the patient's face.

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