TW202022282A - Spotlight device and spotlight tracking method for achieving the effect of using the spotlight to automatically track the performer - Google Patents

Abstract

The invention discloses a spotlight device suitable for projecting a ray towards a performer. The spotlight device includes a base module, a spotlight, a driving module, a lens module and a control module. The spotlight is used for projecting the ray towards the performer to generate a light gathering region. The driving module is used for driving the spotlight to rotate. The lens module faces the performer to sense light, and outputs a light sensing signal related to a light sensing image. The control module receives the light sensing signal, detects a facial position of the performer and a position of the light gathering region in the light sensing image, and controls the driving module to drive the spotlight to rotate according to the facial position of the performer and the position of the light gathering region, so as to ensure that a distance from the position of the light gathering region to the facial position of the performer conforms to a preset distance. Therefore, it is able to achieve the effect of using the spotlight to automatically track the performer, and provide the effects of reducing the manpower and the cost, increasing the response speed and improving the performance effect.

Description

Spotlight device and spotlight tracking method

The invention relates to a device and method applied to stage performances, in particular to a spotlight device and a spotlight tracking method.

Spotlights are commonly used on general stage or podiums. They are used to project light on performers or speakers to focus on the key points of the performance and increase the appeal of the performance.

However, when the performer moves, the current technology relies on manpower to adjust the projection position of the spotlight to achieve the effect of the light moving with the performer. However, in small performances, due to the low cost, there may not be additional funds to hire manpower to adjust the spotlight. You can only choose to turn on the entire scene or darken the entire scene. However, when the presentation is conducted, the entire scene will cause projections. The bright and dark details of the presentation cannot be presented, and the dark lights of the entire field will cause the speaker's expressions and gestures to be unclear, resulting in poor speech effects. In large-scale performances, although the manpower for operating the spotlight is usually planned and funded, if the operator is not familiar with the content of the performance, when the performer is moving fast, the spotlight will often appear to be half-beat slowly, resulting in greatly reduced performance. .

Therefore, the first object of the present invention is to provide a spotlight device that can solve the above-mentioned problems.

Therefore, the spotlight device of the present invention is suitable for projecting light toward a performer, and includes a base module, a spotlight, a driving module, a lens module, and a control module.

The spotlight is arranged on the base module and used for projecting light toward the performer to generate a spotlight.

The driving module is arranged on the base module to drive the spotlight to rotate.

The lens module is arranged on the base module, and is sensitized toward the performer, and outputs a photosensitive signal related to a photosensitive image.

The control module signal is connected to the lens module and the drive module, receives the photosensitive signal, and detects the position of the performer’s face and the position of the concentrating area in the photosensitive image, and according to the performer’s face The position and the position of the concentrating area control the driving module to drive the spotlight to rotate, so that the distance between the position of the concentrating area and the position of the performer's face matches a predetermined distance.

Therefore, the second object of the present invention is to provide a spotlight tracking method that can solve the above-mentioned problems.

Therefore, the spotlight tracking method of the present invention is applied to the spotlight device as described above, and includes the following steps:

(A) The control module receives the photosensitive signal related to the photosensitive image, and detects the position of the performer's face and the position of the concentrating area in the photosensitive image.

(B) The control module calculates whether the distance between the position of the performer's face and the position of the spotlight conforms to a predetermined distance.

(C) When the judgment in step (B) is no, the control module judges a moving direction according to the position of the performer's face and the position of the focusing area.

(D) The control module controls the drive module to drive the spotlight to rotate, so that the spotlight area moves along the moving direction.

The effect of the present invention is: by setting the lens module to capture the photosensitive image, and working with the control module to detect and calculate the position of the performer’s face and the position of the concentrating area, and according to the performer’s face The position and the position of the spotlight control the drive module to rotate the spotlight to move the spotlight, which can achieve the effect of the spotlight automatically tracking the performer, reducing manpower, reducing costs, improving response speed, and increasing performance effects .

Referring to Figures 1, 2 and 3, an embodiment of the spotlight device of the present invention is suitable for projecting light toward a performer 9 on a stage 90, and includes a base module 2, a spotlight 3, and a driving module 4 , A lens module 5, a control module 6, and a power module 7 for providing power to the drive module 4, the lens module 5 and the control module 6.

The base module 2 includes a first base 21 and a second base 22.

The spotlight 3 is disposed on the base module 2 and used to project light toward the performer 9 to generate a spotlight area 31. The spotlight 3 refers to a light-emitting element with strong illuminance and narrow illuminating range, which is convenient for illuminating a specific area of a stage 90.

The driving module 4 is disposed on the base module 2 to drive the spotlight 3 to rotate. The driving module 4 includes a first rotating shaft motor 41 arranged on the first base 21 and provided for the second base 22, and a second shaft motor 41 arranged on the second base 22 and provided for the spotlight 3 The shaft motor 42, the first shaft motor 41 is used to drive the second base 22, the second shaft motor 42 and the spotlight 3 to rotate around a first shaft L1, and the second shaft motor 42 is used to drive the The spotlight 3 rotates around a second rotation axis L2 intersecting the first rotation axis L1. Wherein, the first rotation axis L1 and the second rotation axis L2 are preferably perpendicular to each other, so as to increase the rotatable angle of the spotlight 3. Wherein, the second rotating shaft motor 42 is arranged at both ends of the U-shape of the second base 22 and drives the spotlight 3 to rotate around the second rotating shaft L2 by its own rotation.

The lens module 5 is disposed on the base module 2 to perform light exposure toward the performer 9 and output a light-sensing signal related to a light-sensing image. The lens module 5 includes a lens element 51 for receiving light, and a photosensitive element 52 corresponding to the lens element 51 and used for sensitizing and outputting the photosensitive signal. Wherein, the photosensitive element 52 can be implemented using technologies such as a charge-coupled device (CCD) or a complementary metal oxide semiconductor active pixel sensor (CMOS Active pixel sensor).

The control module 6 is signally connected to the lens module 5 and the drive module 4, receives the photosensitive signal, and detects the position of the performer 9's face and the position of the concentrating area 31 in the photosensitive image, and according to the The position of the face of the performer 9 and the position of the focusing area 31 control the driving module 4 to drive the spotlight 3 to rotate so that the distance between the position of the focusing area 31 and the position of the performer 9 conforms to a predetermined distance.

Among them, detecting the relative position of objects in the photosensitive image is already a mature algorithm. On the Internet, such as OpenCV (Open Source Computer Vision Library), there are open source (Open Source) programs for reference applications. Therefore, in I won't go into details here.

Wherein, the control module 6 controls the drive module 4 to drive the spotlight 3 to rotate so that the distance between the center position 311 of the focusing area 31 and the center position 91 of the performer 9 is substantially three times that of the performer 9 the length of the face, and the center position 311 of the focusing area 31 is located below the center position 91 of the performer 9’s face.

Referring to Figure 1, Figure 3 and Figure 4, an embodiment of the spotlight tracking method of the present invention is applied to the above spotlight device and includes the following steps:

Steps 81 and 82: The control module 6 receives the photosensitive signal related to the photosensitive image, and detects the position of the face of the performer 9 and the position of the concentrating area 31 in the photosensitive image.

Wherein, the control module 6 preferably calculates the center position 91 of the face of the performer 9 and the center position 311 of the concentrating area, and preferably calculates their positions in the way of drawing coordinates. Wherein, the control module 6 preferably uses face detection technology to calculate the center position 91 of the performer 9's face, and analyzes the midpoint of the widest level of a continuous bright region in the photosensitive image as the At the center position 311 of the light-concentrating area, the continuous bright area refers to an image area whose brightness is greater than the average brightness of the photosensitive image and whose continuous length and width are both greater than the predetermined length and width.

Step 83: The control module 6 calculates whether the distance between the position of the face of the performer 9 and the position of the concentrating area 31 meets the predetermined distance, and when the judgment is no, the control module 6 calculates whether the position of the performer 9 The position of the face and the position of the focusing area 31 determine a moving direction.

Among them, the predetermined distance is preferably three times the length of the face of the performer 9. The control module 6 calculates a predetermined projection position 92 based on the central position 91 of the performer 9 and the length of the performer’s face, and determines the moving direction based on the predetermined projection position 92 and the central position 311 of the focusing area.

Wherein, the predetermined projection position 92 is located below the center position 91 of the face of the performer 9, and the distance between the center position 91 of the face of the performer 9 and the predetermined projection position 92 is preferably three times the face of the performer 9 Section length.

Step 84: The control module 6 controls the driving module 4 to drive the spotlight 3 to rotate, so that the spotlight region 31 moves along the moving direction, and returns to step 81.

Step 85: When the user decides to stop the tracking, stop the program calculation, if not, go back to step 81.

In actual use, the lens module 5 and the spotlight 3 are first set to face a stage 90, and the lens module 5 is exposed to the direction of the stage 90, and captures the photos related to the performer 9 on the stage 90 Image to output the light-sensing signal. After receiving the light-sensing signal, the control module 6 detects the central position 91 of the performer 9's face and the central position 311 of the concentrating area in the light-sensing image, and according to a preset performance The length of the face of the performer or the length of the face of the performer 9 on the stage 90 is calculated, and then the predetermined projection position 92 is calculated according to the obtained face length, and the predetermined projection position 92 and the center position of the concentrating area 311 For example, if the calculated center position 311 of the condensing area is located to the left of the predetermined projection position 92 as shown in FIG. 3, the movement direction is to move to the right, and then the control mode The group 6 controls the driving module 4 to drive the spotlight 3 to rotate, so that the focusing area 31 moves along the moving direction, and repeats the above actions until the center position 311 of the focusing area reaches the predetermined projection position 92.

If the performer 9 moves, because the center position 91 of the performer 9's face changes at this time, the calculated predetermined projection position 92 will change accordingly. Therefore, the control module 6 repeats the aforementioned tracking action until the The central position 311 of the focusing area reaches the predetermined projection position 92 again.

Based on the above description, the advantages of this embodiment can be summarized as follows:

1. By setting the lens module 5 to capture the photosensitive image, and working with the control module 6 to detect and calculate the position of the performer 9's face and the position of the concentrating area 31, and according to the face of the performer 9 The driving module 4 is controlled by the position of the spotlight and the position of the focusing area 31 so that the distance between the position of the focusing area 31 and the face position of the performer 9 meets the predetermined distance, which can achieve the effect of the spotlight 3 automatically tracking, and because The speed of electronic calculation is much faster than the reaction time of human beings. Therefore, even if the performer 9 suddenly moves, the concentrating area 31 can quickly track and keep up with the performer 9. Compared with the conventional technology, this embodiment does not require additional human operation. Spotlight 3 does not need to spend time educating the operator to be familiar with the performance content, that is, it can achieve quick response and good projection effect, and has the effects of reducing manpower, reducing costs, improving response speed, and increasing performance effects.

2. By arranging the first rotating shaft motor 41 and the second rotating shaft motor 42 whose rotating shafts intersect, the rotating angle of the spotlight 3 can be increased to achieve a wider irradiation range.

3. By designing the predetermined projection position 92 to be three times the length of the face of the performer 9 below the central position 91 of the face of the performer 9, the central position 311 of the concentrating area can be located in the body area of the performer 9 In this way, the whole body of the performer 9 can be located in the bright light area of the concentrating area 31. Therefore, the performer 9 can be clearly displayed from facial expressions to body movements, so it can achieve the best The performance effect.

In summary, it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this. Any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as Within the scope of the invention patent.

2: Base module 21: First base 22: Second base 3: Spotlight 31: Concentrating area 311: Central position of the concentrating area 4: Drive module 41: First shaft motor 42: Second shaft motor 5: lens module 51: lens element 52: photosensitive element 6: control module 7: power supply module 81~85: step 90: stage 9: performer 91: face center position 92: predetermined projection position L1: first Rotation shaft L2: second shaft

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a three-dimensional schematic diagram of an embodiment of the spotlight device of the present invention; FIG. 2 is a circuit block of the embodiment Schematic diagram; FIG. 3 is an explanatory diagram of this embodiment; and FIG. 4 is a flowchart of an embodiment of the spotlight tracking method of the present invention.

81~85: steps

Claims (9)

A spotlight device, which is suitable for projecting light toward a performer, includes: a base module; a spotlight, arranged on the base module, and used to project light toward the performer to generate a focused area; a driving module Set on the base module to drive the spotlight to rotate; a lens module set on the base module for light-sensing in the direction of the performer and outputting a light-sensitive signal related to a light-sensitive image; And a control module for signal connection with the lens module and the drive module, receive the photosensitive signal, and detect the position of the performer’s face and the position of the concentrating area in the photosensitive image, and according to the performer’s The position of the face and the position of the spotlight control the driving module to drive the spotlight to rotate so that the distance between the position of the spotlight and the position of the performer's face accords with a predetermined distance. The spotlight device according to claim 1, wherein the base module includes a first base and a second base, and the drive module includes a first base and a second base. A first rotating shaft motor provided on the second base and a second rotating shaft motor provided for the spotlight. The first rotating shaft motor is used to drive the second base, the second rotating shaft motor and the spotlight to A first rotating shaft is used as a center to rotate, and the second rotating shaft motor is used to drive the spotlight to rotate with a second rotating shaft intersecting the first rotating shaft as a center. The spotlight device according to claim 1, wherein the control module controls the drive module to drive the spotlight to rotate so that the distance between the center position of the focusing area and the center position of the performer is substantially three times The length of the performer’s face. The spotlight device according to claim 1, wherein the control module controls the driving module to drive the spotlight to rotate so that the center position of the focusing area is located below the center position of the performer's face. The spotlight device according to claim 1, wherein the lens module includes a lens element for receiving light, and a photosensitive element provided corresponding to the lens element and used for sensitizing and outputting the photosensitive signal. A spotlight tracking method, applied to the spotlight device according to claim 1, and comprising the following steps: (A) The control module receives the photosensitive signal related to the photosensitive image, and detects the performance of the performer in the photosensitive image The position of the face and the position of the concentrating area; (B) The control module calculates whether the distance between the position of the performer’s face and the position of the concentrating area meets the predetermined distance; (C) It is judged as no in step (B) When, the control module determines a movement direction according to the position of the performer’s face and the position of the spotlight; and (D) the control module controls the drive module to drive the spotlight to rotate so that the spotlight is along the Move in the direction of movement. The spotlight tracking method according to claim 6, wherein in step (A), the control module calculates the center position of the performer's face and the center position of the spotlight area. The spotlight tracking method according to claim 7, wherein, in step (C), the control module calculates a predetermined projection position according to the center position of the performer’s face and the length of the performer’s face, and according to the predetermined projection The position and the center position of the focusing area determine the moving direction. The spotlight tracking method according to claim 8, wherein, in step (C), the predetermined projection position is located below the center position of the performer’s face, and the center position of the performer’s face and the predetermined projection position The distance is essentially three times the length of the performer’s face.

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