Projection indication device and method thereof

Abstract

A projection pointing device includes an image capturing unit, a detection unit, a processing unit, and a projection unit. The image capturing unit acquires an image of a corresponding field. The detection unit detects the field state corresponding to the field and detects the target distance of a first object within the corresponding field state. The processing unit uses a calculation module based on the image to determine a first position of the first object and a second position of a second object in the image, and calculates a result based on the first position, the second position, and the target distance. The projection unit projects the result as an image onto the field. The length of the image varies according to the target distance.

Description

Technical Field

[0001] This invention relates to a projection indicator device and method, and more particularly to a projection indicator device and method that can combine image and field detection and use projection to assist in ball sports. Background Technology

[0002] In recent years, laser rangefinders have replaced traditional ranging methods as the mainstream ranging system. Laser ranging can be divided into three methods: triangulation, time-of-flight (ToF) measurement, and confocal measurement. Currently, the most common method is time-of-flight (ToF), which measures the round-trip time of the laser. The principle of ToF is to use a sight or rangefinder to emit coded laser light from a pulsed infrared source to the target object. The ToF camera then receives the laser light reflected back from the target object and calculates the distance to the target object using a ranging formula. Due to the unique principle of lasers, measurements can be taken even if the target is inconvenient to approach.

[0003] On the other hand, LiDAR technology is becoming increasingly mature and widespread. LiDAR is a sensing technology that emits low-power, eye-safe laser light to perform pulse measurements and measures the time required for the laser light to travel round-trip between the sensor and the target. The resulting data can be used to generate 3D images, while providing spatial location and depth information for identifying, classifying, and tracking moving objects.

[0004] In some ball sports, such as golf, beginners often find it difficult to judge the direction and force of their swing. Therefore, this invention provides a projection indicator device and method as a guide for beginners in ball sports. Summary of the Invention

[0005] In view of this, the present invention provides a projection pointing device and a method thereof.

[0006] A projection pointing device according to an embodiment of the present invention includes:

[0007] The image capturing unit is used to acquire images of the corresponding field.

[0008] The detection unit is used to detect the field state of the corresponding field and to detect the distance of the first object in the corresponding field state.

[0009] The processing unit is configured to determine, based on the image and the calculation module, the first position of the corresponding first object and the second position of the second object in the image, and to calculate the result based on the first position of the first object, the second position of the second object, and the target distance; and

[0010] The projection unit projects the result as an image onto the field.

[0011] The length of the image changes according to the distance to the target.

[0012] The result includes the orientation and the length of the image, and the length of the image is positively correlated with or proportional to the distance to the target.

[0013] A projection pointing device according to an embodiment of the present invention includes:

[0014] The image capturing unit is used to acquire images of the corresponding field.

[0015] The detection unit is used to detect the field state of the corresponding field and to detect the distance of the first object in the corresponding field state.

[0016] The processing unit is configured to determine, based on the image and using a calculation module, a first position corresponding to a first object and a second position corresponding to a second object in the image, and to calculate a result based on the first position of the first object, the second position of the second object, and the distance; and

[0017] The projection unit projects the result as an image onto the field.

[0018] The length of the image changes according to the distance.

[0019] The projection indicator device meets at least one of the following conditions:

[0020] 1≦LDF / CF≦2;

[0021] 92≦(LDP x LDW) / V≦420;

[0022] 0.7 ≤ PF / CF ≤ 1.5

[0023] Wherein, LDF is any field of view of the detection unit; CF is any field of view of the image capturing unit; LDP is the pixel value of the detection unit; LDW is the weight of the detection unit; V is the volume of the projection indicator device; and PF is any field of view of the projection unit.

[0024] As described in this invention, the projection pointing device includes a projection unit comprising a light source and a light deflector. The light source emits visible light, which, via the light deflector, projects an image onto the field between the first and second positions, satisfying the condition 967.9 ≦ ((CW x PW) / MV) + PF ≦ 1607.9, where CW is the weight of the image capturing unit, PW is the weight of the projection unit, MV is the volume of the deflector, and PF is any field of view of the projection unit.

[0025] As described in the projection indicator device of the present invention, the field status includes topographic map, wind speed, humidity, light intensity, obstacle distribution, or grass line status.

[0026] As described in the present invention, the detection unit includes a photodiode that emits a vertical resonant cavity surface-emitting laser in a flash manner and receives the reflected laser beams in four zones in turn through a single-photon avalanche diode sensor, and calculates the distance using time-of-flight ranging.

[0027] As described in the present invention, the field includes a corresponding green, table, or ball court, the first object is a flagpole, goal, or hole, and the second object is a ball.

[0028] The projection indicating device as described in this invention further includes a housing, in which the detection unit, the projection unit, and the image capturing unit are disposed. The detection unit is disposed between the projection unit and the image capturing unit, and in a usage state, the projection unit is away from the plane of the field, and the image capturing unit is close to the plane of the field.

[0029] An embodiment of the projection indication method of the present invention includes the following steps:

[0030] The image capturing unit is used to obtain images of the corresponding field.

[0031] The detection unit is used to detect the field state of the corresponding field and the distance of the first object in the corresponding field state.

[0032] Based on the image, a calculation module is used to determine the first position of the first object and the second position of the second object in the image;

[0033] Based on the first position of the first object, the second position of the second object, and the distance, the calculation module calculates a result, which includes the length of the image.

[0034] Adjust the length of the image based on this distance; and

[0035] Based on the result, the image is projected using a projection unit to display it. The projection unit includes a light source that emits visible light, which projects the image onto the field between the first position and the second position, and satisfies at least one of the following conditions:

[0036] 1≦LDF / CF≦2;

[0037] 92≦(LDP x LDW) / V≦420;

[0038] 0.7≦PF / CF≦1.5; 967.9≦((CWxPW) / MV)+PF≦1607.9

[0039] Wherein, LDF is any field of view of the detection unit; CF is any field of view of the image capturing unit; LDP is the pixel value of the detection unit; LDW is the weight of the detection unit; V is the volume of the projection indicator device; PF is any field of view of the projection unit; CW is the weight of the image capturing unit; PW is the weight of the projection unit; and MV is the volume of the steering component.

[0040] As described in this invention, the detection unit emits a visible light pattern of a preset shape and hits the environmental terrain. When the image capturing unit obtains an image of the corresponding field, the image includes the visible light pattern hit on the environmental terrain and the deformation of the visible light pattern under different terrain undulations.

[0041] This calculation module correlates the deformation of graphics in the image with the elevation and undulation information of the environmental terrain in order to identify the undulation characteristics of the environmental terrain.

[0042] As described in this invention, when the change in the deformation ratio of the graphic relative to the preset shape does not exceed a preset range, the calculation module can accurately identify the undulation characteristics of the environmental terrain.

[0043] If the terrain changes too drastically or does not conform to the characteristics trained on the artificial intelligence model, the calculation module will avoid erroneous outputs.

[0044] As described in the present invention, the preset pattern is a checkerboard pattern or a dot matrix pattern.

[0045] The method described above can exist in the form of program code. When the program code is loaded and executed by a machine, the machine becomes an apparatus for implementing the present invention.

[0046] The projection indicator device and method in this case can combine image and light detection and use projection to assist in ball sports, thereby reducing the difficulty for users to use related auxiliary equipment and further increasing their interest in learning related sports. Attached Figure Description

[0047] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings.

[0048] Figure 1 This is a schematic diagram showing a projection indicator device according to an embodiment of the present invention.

[0049] Figure 2 This is a schematic diagram showing a detection unit according to an embodiment of the present invention.

[0050] Figure 3 This is a schematic diagram showing a projection unit according to an embodiment of the present invention.

[0051] Figure 4 This is a schematic diagram showing an example of a projection indicator device according to another embodiment of the present invention.

[0052] Figure 5 This is a flowchart illustrating a projection indication method according to an embodiment of the present invention.

[0053] Figure 6 This is a flowchart illustrating a projection indication method for a golf ball application according to an embodiment of the present invention.

[0054] Figure 7 This is a schematic diagram illustrating an example of projection indication according to an embodiment of the present invention.

[0055] Figure 8 This is a flowchart illustrating another projection indication method according to an embodiment of the present invention.

[0056] Figure 9A , 9B This is a schematic diagram showing that the detection unit according to an embodiment of the present invention uses visible light to project a checkerboard pattern onto the environmental terrain;

[0057] Figure 10 This is a schematic diagram showing that the detection unit according to an embodiment of the present invention uses visible light to project a dot matrix shape onto the environmental terrain. Detailed Implementation

[0058] Figure 1 This invention displays a projection pointing device according to an embodiment of the present invention. The projection pointing device 100 according to an embodiment of the present invention includes at least an image capturing unit 110, a detection unit 120, a projection unit 130, a calculation module 140, and a processing unit 150. The image capturing unit 110 may be a camera with at least one lens, used to capture images of a corresponding field. In some embodiments, the field may be any sporting environment, such as a golf green, a billiards table, a cricket field, a billiards field, an archery range, etc. It should be noted that the aforementioned fields are merely examples in this case and the invention is not limited thereto. Figure 2This illustrates a detection unit according to an embodiment of the present invention. The detection unit 120 in this embodiment includes at least a laser emitter 122 and a light sensor 124. In other embodiments, the detection unit may also include an anemometer, hygrometer, light intensity meter, ultrasonic or triangulation module (not shown). In some embodiments, the laser emitter 122 may be a vertical cavity surface-emitting laser (VCSEL) with a wavelength of 905nm, capable of detecting a range of 8m and a field of view (FOV) of 60° x 45° or 30° x 30°. In some embodiments, the light sensor 124 may be a single-photon avalanche diode (SPAD) sensor. It must be noted that the aforementioned laser emitter 122 and light sensor 124 are merely examples of this invention and are not limited thereto; any light source can be used in this invention. In some embodiments, the detection unit 120 can use a laser emitter 122 to emit a vertical cavity surface-emitting laser in a flash manner, and use a light sensor 124, such as a single-photon avalanche diode (SPAD) sensor, to receive the reflected laser beams in four zones in turn, and calculate the distance using time-of-flight (ToF) ranging. The detection unit 120 can detect the field conditions of the corresponding area, including a topographic map of the terrain undulations and wind speed, humidity, light intensity, obstacle distribution or grass line conditions, and detect the distance to specific objects in the corresponding field.

[0059] Figure 3 This displays a projection unit according to an embodiment of the present invention. The projection unit 130 according to an embodiment of the present invention includes at least a light source 132 and a light deflector 134. In some embodiments, the light source 132 may be a 1.3W, Φ9mm light source using visible light with a wavelength of 650nm-652nm, and its projection angle range (field of view of the projection unit) may be 40° x 24°. In some embodiments, the light deflector 134 may be a 2D MEMS (Micro-Electro-Mechanical Systems) galvanometer. In one embodiment, its galvanometer size may be 1.0mm x 1.2mm, but is not limited thereto, as long as the galvanometer area (ML) is 1-1.3mm². 2 (Inclusive) is acceptable, and the scanning angle can be: + / -10° (Fast); + / -6° (Slow). The overall size (MV) of the 2D MEMS is 10.8 x 5.6 x 2.5 (mm), but it is not limited to this, as long as the 2D MEMS volume (MV) is 150-152 mm. 2(Including) is sufficient. In some embodiments, the light source 132 projects visible light through the light deflector 134. The light deflector 134 allows the laser to be incident on a reflector, and by controlling the reflection angle of the reflector, the laser beam LB is deflected to project an image onto a projection surface, such as the ground. In this embodiment, the image is a straight line. The direction of the straight line can guide the direction of the shot, and the length of the straight line can represent the force of the shot. In some embodiments, the greater the distance, the greater the required force, so the force is quantified and displayed by the calculation module in terms of the length of the image. It is worth noting that in some embodiments, the image can be a curved graphic, an arrow graphic, etc. In some embodiments, the light deflector can be a prism, a plane mirror, or a curved mirror. In some embodiments, a light deflector may not be provided, and the light source is directly projected onto a surface or plane.

[0060] The calculation module 140 can be trained using an artificial intelligence learning model and can identify the position, distance, and field state of objects in the images captured by the image capturing unit 110, such as topographic maps, calculate / generate the movement path of specific objects, such as the moving trajectory of a golf ball, billiard ball, or pool ball, and calculate the corresponding movement direction and force. The processing unit 150 can execute the projection indication method of this invention, the details of which will be explained later.

[0061] Figure 4 This illustrates an example of a projection indicator device according to another embodiment of the present invention. In this example, the projection indicator device 100 is designed as a cuboid. It is worth noting that the shape of the aforementioned projection indicator device is merely an example of this case, and the present invention is not limited to any shape; any shape, such as a circle, cube, or prism, can be applied to the present invention. In this example, the projection indicator device 100 can be mounted on a stand T, and the detection unit 120 is disposed between the projection unit 130 and the image capturing unit 110, arranged sequentially from top to bottom as the projection unit 130, the detection unit 120, and the image capturing unit 110. For example, when the projection indicator device 100 of the present invention is used on a billiard table, the projection unit 130 is away from the tabletop (plane), and the image capturing unit 110 is close to the tabletop; as another example, if used on a golf ball, the projection unit 130 is away from the green (plane), and the image capturing unit 110 is close to the green. It should be noted that the arrangement of the aforementioned components on the projection indicator device 100 is merely an example of this case, and the present invention is not limited thereto.

[0062] It must be noted that in some embodiments, the projection indicator device meets at least one of the following conditions: 1≦LDF / CF≦2; 92≦(LDP x LDW) / V≦420; 0.7≦PF / CF≦1.5, 1064≦((CWxPW) / MV)+PF≦1448, where LDF is any field of view of the detection unit; CF is any field of view of the image capturing unit; LDP is the pixel value of the detection unit; LDW is the weight of the detection unit; V is the volume of the projection indicator device; PF is any field of view of the projection unit; CW is the weight of the image capturing unit; PW is the weight of the projection unit; and MV is the volume of the steering component.

[0063] The table below reveals the design parameters and conditions for two embodiments of this case: length is in millimeters (mm), and volume is in cubic millimeters (mm³). 3 (The unit of angle is degrees, the unit of weight is grams (g), and the unit of pixel value is pixels.)

[0064]

[0065] It is worth noting that, taking the LDF of Example 1 as an example, its field of view can be 60 degrees x 60 degrees, 60 degrees x 45 degrees, or 45 degrees x 45 degrees, and the same applies to other field of view angles. It must also be noted that the above table is only an embodiment of this case, and the present invention is not limited thereto.

[0066] Figure 5 This displays a projection pointing method according to an embodiment of the present invention. The projection pointing method according to an embodiment of the present invention is applicable to an electronic device, such as... Figure 1 Projection indicator device.

[0067] First, as in step S510, an image of the corresponding field is acquired using the image capturing unit. It is worth noting that in some embodiments, the field can be any environment in which the sport is played, such as a golf green, a billiards table, a cricket field, an archery range, etc. It should be noted that the aforementioned fields are merely examples in this case, and the invention is not limited thereto. Next, as in step S520, the field state corresponding to the field is detected using a laser, and the distance to the first object in the corresponding field state (hereinafter referred to as the target distance) is detected. As mentioned earlier, in some embodiments, the laser can emit a vertical cavity surface-emitting laser in a flash manner, and receive the reflected laser beams in four zones in turn using a single-photon avalanche diode sensor, and calculate the distance using time-of-flight ranging. In some embodiments, the field state can be a topographic map including terrain undulations. Then, as in step S530, based on the image acquired by the image capturing unit, a calculation module determines the first position of the first object and the second position of the second object in the image. It should be noted that in some embodiments, the aforementioned field can be the green environment of a corresponding golf course, and the first object is a flagstick or hole, and the second object is a golf ball. In some embodiments, the aforementioned field can be a billiard table, and the first object is a hole, and the second object is a billiard ball. It must be noted that the aforementioned field, first object, and second object are merely examples of this case, and the present invention is not limited thereto. Next, as in step S540, the direction and force are calculated using a calculation module based on the first position of the first object, the second position of the second object, the target distance from the first object, and the field state. It is worth noting that in some embodiments, the projection indicator device may include an inertial sensor to detect the attitude data corresponding to the projection indicator device. In some embodiments, the calculation module may further calculate the direction and force based on the attitude data. It should be noted that in some embodiments, the calculation module may correct the aforementioned target distance based on the first position of the first object and the second position of the second object. Afterwards, as in step S550, the calculated direction and force are projected using a projection unit to display a quantized guide line. As mentioned above, the projection unit may project visible light through a light deflector. A light deflector directs the laser beam onto a reflector, and by controlling the reflector's angle, the laser beam is deflected to project a guide line onto a projection surface, such as the ground. Notably, in some embodiments, the guide line can be a straight line, a curve, or an arrow. It is also noteworthy that in some embodiments, greater distance indicates a greater required force; therefore, the calculation module quantifies the force as the length of the image. In other embodiments, headwinds, surface roughness, or grass line conditions also influence the force; therefore, in this further embodiment, the calculation unit adjusts the image length based on the distance, wind speed, humidity, light intensity, obstacle distribution, or grass line condition.In some embodiments, the flagpole, goal, or hole and the ball are not on the same plane, so an angle (not shown) will also affect the magnitude of the force; Figure 7 For example, if flagpole OB1 is at the top of a hill and golf ball OB2 is at the bottom, the angle is an elevation angle; or if flagpole OB1 is at the bottom and golf ball OB2 is at the top, the angle is a depression angle. The calculation unit calculates this angle and adjusts the image length accordingly. When the angle is an elevation angle, the larger the elevation angle, the longer the image; when the angle is a depression angle, the larger the depression angle, the shorter the image. In summary, the image length is positively correlated or proportional to the target distance. It is worth noting that an image with a far target distance but a small elevation angle may have the same length as an image with a small target distance but a large elevation angle. Additionally, in some embodiments, the projection unit can display this guide line at a second position of the corresponding second object.

[0068] As previously mentioned, in some embodiments, the field may be the green environment of a corresponding golf course, and the first object is a flagpole or hole, and the second object is a golf ball. Figure 6 This invention demonstrates a method for calculating the direction and force of a golf ball application according to an embodiment of the present invention. In this embodiment, the field state can be a topographic map of the green environment, and the field state includes the grass line state of the green environment, i.e., the growth direction of the grass on the green. First, as in step S610, the calculation module calculates the trajectory of the golf ball based on the position of the flagstick or the hole, the position of the golf ball, the topographic map, and the grass line state, and as in step S620, obtains the direction and force based on the trajectory. Similarly, the projection unit can project the calculated direction and force to display a quantified guide line. Similarly, the guide line can be a straight line or a curve, and the quantified guide line will be longer when the force is greater. In addition, in some embodiments, the projection unit can display this guide line at the position of the golf ball.

[0069] Figure 7This illustrates an example of projection guidance according to an embodiment of the present invention. In this example, there is a flagstick OB1 and a golf ball OB2 on the green 700, and the projection guidance device PD can be placed approximately 1 meter behind the golf ball OB2. The projection guidance device PD can acquire an image of the green 700 including the flagstick OB1 and the golf ball OB2 through an image capturing unit, and the radar of the projection guidance device PD can detect the field conditions of the entire green environment, i.e., the topographic map, the flagstick OB1, the golf ball OB2, and the state of the grass lines. Based on the position of the flagstick, the position of the golf ball, the topographic map, and the state of the grass lines, the calculation module of the projection guidance device PD can calculate the trajectory TR that the golf ball OB2 should travel, as well as the corresponding direction and force. The projection unit of the projection guidance device PD can perform laser projection PLB based on the calculated direction and force to display a quantified guide line IL on the grass. Therefore, the user can control the direction and force of the shot based on the direction and length of the guide line IL.

[0070] Figure 8 This is a flowchart illustrating another projection indication method according to an embodiment of the present invention. In this other projection indication method according to an embodiment of the present invention:

[0071] First, in step S810, the projection indicator device is positioned in the corresponding field, and the device is activated once positioned. This field can be any sports environment, such as a golf green. The aforementioned field is merely an example in this case, and the invention is not limited thereto. Taking a golf green as an example, the projection indicator device can be placed facing the flagstick, one meter behind the ball.

[0072] Next, in step S820, the image capturing unit 110 captures the image in front of it, and the calculation module 140 uses artificial intelligence to identify the positions of the first and second objects in the image captured by the image capturing unit 110. For example, after the image capturing unit 110 captures the image of the ball and the flagstick on a golf course, the calculation module 140 uses artificial intelligence to determine the positions of the ball and the flagstick. At the same time, the LiDAR is activated to detect the distance between the first and second objects and to detect the field conditions of the corresponding area. For example, the LiDAR is used to detect the distance between the ball and the flagstick and to detect the green terrain.

[0073] In step S830, the data obtained in step S820 and the data from the inertial measurement unit are all provided to the artificial intelligence learning model of the calculation module 140, and the calculation module 140 outputs the hitting direction and force accordingly. The calculation module 140 can be trained by the artificial intelligence learning model and can identify the position, distance, and field state of objects in the images captured by the image capturing unit 110, such as topographic maps, calculate / generate the motion path of specific objects, such as the moving trajectory of golf balls, billiard balls, etc., and calculate the corresponding movement direction and force.

[0074] In step S840, the processing unit 150 receives the data calculation results output by the calculation module 140, and the projection unit 130 can project the hitting direction and force according to the calculated results to display the quantified guide line.

[0075] In step S850, when the projection indicator device is retracted, it is automatically powered off.

[0076] In one embodiment of the present invention, the detection unit 120 may include a visible light emitting element (not shown), thereby enabling the detection unit 120 to emit a visible light pattern of a preset shape and project it onto the environmental terrain. The preset visible light pattern is preferably a regular shape, such as a checkerboard pattern or a dot matrix pattern. A regular shape means that when projected by the detection unit 120, the shape of the visible light pattern is regular. If projected onto a plane perpendicular to the projection path, a regular pattern is formed.

[0077] When visible light patterns are shone onto the terrain, the resulting patterns will also undergo corresponding deformations as the terrain undulates. For example, the curvature and direction of the lines in the pattern; changes in the proportion of the pattern; and relative changes in the distribution of light and shadow and the projection position.

[0078] like Figure 9A , 9B The checkerboard pattern shown, when projected onto the surrounding terrain, exhibits distortions in the dimensions and shape of its individual cells as the terrain changes. For example... Figure 10 The dot matrix pattern shown has its unit dot pattern spacing and shape deformed as the terrain changes.

[0079] When the image capturing unit 110 captures an image of the corresponding field, the image contains a visible light pattern of the detection unit 120 hitting the environmental terrain, as well as the deformation of the visible light pattern under different terrain undulations.

[0080] Next, the images captured by the image capturing unit 110 are input into the artificial intelligence learning model of the computing module 140.

[0081] The artificial intelligence model in computer module 140 learns the deformation features of graphics in images, such as Figure 9A , 9B The features are extracted by considering the curvature and direction of the lines in the checkerboard pattern, the changes in the scale of the checkerboard pattern with the terrain, and the relative changes in the distribution of light and shadow and the projection position.

[0082] After being trained on a large number of terrains with varying slopes and undulations, the artificial intelligence model of computer module 140 is able to correlate the deformation of graphics in images with the elevation and undulation information of the surrounding terrain. For example, when Figure 9A , 9B As the terrain changes, the lines expand outwards or the spacing increases, indicating that the area is a protrusion or slope; when the lines converge or the spacing decreases, it indicates that the area is a depression or slope. In a specific implementation, when the change in the shape relative to the preset shape does not exceed a preset range, the artificial intelligence model can accurately identify the undulating characteristics of the environmental terrain. If the terrain changes too drastically or does not conform to the characteristics trained on the artificial intelligence model, the computer module 140 will avoid erroneous output.

[0083] For example, if the spacing or aspect ratio of the checkerboard pattern changes by approximately ±30% to ±40% relative to a preset planar graphic (i.e., in its undeformed state), the AI ​​model can still accurately identify it. If the change exceeds this preset range, the computer module 140 will determine that it exceeds the feature distribution trained on by the AI ​​model and mark it as an uncertain area, prompting a re-shoot. As another example, if the curvature of the checkerboard lines corresponds to a radius of curvature of approximately 3 meters or more (i.e., a relatively gentle terrain), the AI ​​model can identify gentle slopes and moderately curved surfaces commonly found on greens. However, if the radius of curvature is too small (less than approximately 3 meters, indicating severe unevenness or unnatural deformation), the AI ​​model will be unable to interpret the deformation due to it exceeding its training experience, and the output will also be marked as an uncertain area.

[0084] For example, if the area, side length, or spacing of the dot matrix pattern changes by approximately ±30% to ±40% relative to the pattern generated on the plane, the artificial intelligence model can still accurately identify the undulation features that are different from those on the plane.

[0085] This invention is not limited to this. In addition to learning the geometric changes of the checkerboard lines, the artificial intelligence model will also learn the features under different lighting conditions. For example, the artificial intelligence model can be trained using multiple sets of image data with different lighting distributions but the same projection position, so that it learns which changes are caused by ambient light and which changes are caused by the deformation of the terrain itself, thereby identifying the features of the terrain based on the lighting distribution in the images.

[0086] For example, images of the same terrain under different brightness, shadow direction, or reflection conditions can be input into an artificial intelligence model. When the same terrain still corresponds to the same terrain height under different brightness, shadow direction, or reflection conditions, the AI ​​model will learn to ignore the brightness changes caused by lighting and only retain the geometric features of lines related to terrain undulations, such as line curvature and proportional changes. This enables the AI ​​model to maintain stable judgments about terrain under natural light or shadow conditions.

[0087] In addition, the training data input into the artificial intelligence model may also include samples of slight changes in the projection position of visible light patterns, such as slight camera angle deviation or slight shift of the projection grid. By combining these images that have slight differences but are still labeled as the same terrain result, the artificial intelligence model will further learn that projection geometric translation is not equivalent to terrain change, thereby reducing the impact of slight positional changes of the image detection unit 120 or the capturing unit 110 on the interpretation results.

[0088] Therefore, in practical applications, even with different external lighting conditions, it can output consistent and reliable terrain assessment results.

[0089] Finally, the computer module 140 can generate a terrain height distribution map or a slope vector map to produce corresponding suggestions for the hitting angle and force. Parts similar to those in other embodiments described above will not be repeated.

[0090] In another embodiment of this application, the detection unit 120 and the projection unit 130 are combined into one, and the projection unit 130 can project a visible light pattern of a preset shape onto the environmental terrain. Further details will not be provided here.

[0091] Therefore, the projection indicator device and method of this case can combine image and light detection and use projection to assist in ball sports, thereby reducing the difficulty for users to use related auxiliary equipment and further increasing their interest in learning related sports.

[0092] The method, or a specific form or part thereof, of the present invention may exist in the form of program code. The program code may be contained in physical media, such as floppy disks, optical discs, hard disks, or any other machine-readable (e.g., computer-readable) storage media, or may be a computer program product, not limited to an external form, wherein when the program code is loaded and executed by a machine, such as a computer, that machine becomes an apparatus for participating in the present invention. The program code may also be transmitted via some transmission medium, such as wires or cables, optical fibers, or any transmission method, wherein when the program code is received, loaded, and executed by a machine, such as a computer, that machine becomes an apparatus for participating in the present invention. When implemented in a general-purpose processing unit, the program code, in conjunction with the processing unit, provides a unique apparatus that operates similarly to application-specific logic circuits.

Claims

1. A projection indicating device, characterized in that include: The image capturing unit is used to acquire images of the corresponding field. The detection unit is used to detect the field state of the corresponding field and to detect the distance of the first object in the corresponding field state. The processing unit is used to determine the first position of the first object and the second position of the second object in the image based on the calculation module used by the image, and to calculate the result based on the first position of the first object, the second position of the second object, and the target distance; as well as The projection unit projects the result as an image onto the field. The length of the image varies depending on the distance to the target. The result includes the orientation and the length of the image, and the length of the image is positively correlated with or proportional to the distance to the target.

2. A projection indicating device, characterized in that include: The image capturing unit is used to acquire images of the corresponding field. The detection unit is used to detect the field state of the corresponding field and to detect the distance of the first object in the corresponding field state. The processing unit is used to determine, based on the image, the first position of the corresponding first object and the second position of the second object in the image using a calculation module, and to calculate a result based on the first position of the first object, the second position of the second object, and the distance; as well as The projection unit projects the result as an image onto the field. The length of the image changes according to the distance. The projection indicator device meets at least one of the following conditions: 1≦LDF / CF≦2; 92≦(LDP x LDW) / V≦420; 0.7 ≤ PF / CF ≤ 1.5 Wherein, LDF is any field of view of the detection unit; CF is any field of view of the image capturing unit; LDP is the pixel value of the detection unit; LDW is the weight of the detection unit; V is the volume of the projection indicator device; and PF is any field of view of the projection unit.

3. The projection pointing device as described in any one of claims 1 to 2, characterized in that, The projection unit includes a light source and a light deflector. The light source emits visible light, which, via the light deflector, projects an image onto the field between the first and second positions, satisfying the condition 967.9 ≦ ((CW x PW) / MV) + PF ≦ 1607.9, where CW is the weight of the image capturing unit, PW is the weight of the projection unit, MV is the volume of the deflector, and PF is any field of view of the projection unit.

4. The projection indicating device of claim 3, wherein, The site conditions include topographic map, wind speed, humidity, light intensity, obstacle distribution, or grass line conditions.

5. The projection indicating device of claim 3, wherein, The detection unit includes a laser, which emits a vertical resonant cavity surface-emitting laser in a flash manner and receives the reflected laser beams in four zones in turn through a single-photon avalanche diode sensor, and calculates the distance using time-of-flight ranging.

6. The projection indicating device of claim 3, wherein, The area includes a green, table, or course, the first object being a flagpole, goal, or hole, and the second object being a ball.

7. The projection indicating device of claim 3, wherein, It also includes a housing, in which the detection unit, the projection unit and the image capturing unit are disposed. The detection unit is disposed between the projection unit and the image capturing unit, and in a usage state, the projection unit is away from the plane of the field, and the image capturing unit is close to the plane of the field.

8. A method of projecting an indication, characterized by, Includes the following steps: The image capturing unit is used to obtain images of the corresponding field. The detection unit is used to detect the field state of the corresponding field and the distance of the first object in the corresponding field state. Based on the image, a calculation module is used to determine the first position of the first object and the second position of the second object in the image; Based on the first position of the first object, the second position of the second object, and the distance, the calculation module calculates a result, which includes the length of the image. Adjust the length of the image based on this distance; as well as Based on the result, the image is projected using a projection unit to display it. The projection unit includes a light source that emits visible light, which projects the image onto the field between the first position and the second position, and satisfies at least one of the following conditions: 1≦LDF / CF≦2; 92≦(LDP x LDW) / V≦420; 0.7≦PF / CF≦1.5; 967.9≦((CWxPW) / MV)+PF≦1607.9 Wherein, LDF is any field of view of the detection unit; CF is any field of view of the image capturing unit; LDP is the pixel value of the detection unit; LDW is the weight of the detection unit; V is the volume of the projection indicator device; PF is any field of view of the projection unit; CW is the weight of the image capturing unit; PW is the weight of the projection unit; and MV is the volume of the steering component.

9. The method of claim 8, wherein, The detection unit emits a visible light pattern of a preset shape and projects it onto the environmental terrain. When the image capturing unit acquires an image of the corresponding field, the image includes the visible light pattern projected onto the environmental terrain, as well as the deformation of the visible light pattern under different terrain undulations. This calculation module correlates the deformation of graphics in the image with the elevation and undulation information of the environmental terrain in order to identify the undulation characteristics of the environmental terrain.

10. The method of claim 9, wherein, When the deformation ratio of the graphic relative to the preset shape does not exceed the preset range, the calculation module can accurately identify the undulation characteristics of the environmental terrain. If the terrain changes too drastically or does not conform to the characteristics trained on the artificial intelligence model, the calculation module will avoid erroneous outputs.

11. The method of claim 10, wherein, The preset graphic is a checkerboard pattern or a dot matrix pattern.

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