CN113050345A - Color correction equipment and color correction system of external flash lamp - Google Patents
Color correction equipment and color correction system of external flash lamp Download PDFInfo
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- CN113050345A CN113050345A CN202110109396.3A CN202110109396A CN113050345A CN 113050345 A CN113050345 A CN 113050345A CN 202110109396 A CN202110109396 A CN 202110109396A CN 113050345 A CN113050345 A CN 113050345A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
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Abstract
The application provides a color correction system of color correction equipment and external flash lamp. The color correction equipment comprises a luminous information acquisition unit, a color correction processing unit and a communication unit. The light-emitting information acquisition unit is used for acquiring light-emitting information of the external flash lamp; the color correction processing unit is electrically connected with the luminous information acquisition unit and is used for performing color correction processing according to the luminous information to generate color correction result information; the communication unit is used for communicating with the external flash lamp; the communication unit is electrically connected with the color correction processing unit to receive the color correction result information and send the color correction result information to the external flash lamp, so that the external flash lamp corrects and emits light according to the color correction result information. The application realizes color correction of the external flash lamp.
Description
Technical Field
The application relates to the technical field of flash lamps for shooting, in particular to a color correction system of color correction equipment and an external flash lamp.
Background
With the development of mobile communication technology, mobile terminals play an increasingly important role in the life and work of people. Especially, some mobile terminal devices with camera function, such as mobile phone, MP4, PDA, notebook computer, etc., the camera function of these mobile terminals brings great fun to people's life. The mobile terminal with the photographing function needs a light source, and needs artificial light to assist photographing except natural light, so that the artificial light source of the mobile terminal with the photographing function cannot meet the actual use requirement, and people often use an external flash lamp to assist photographing.
However, after the LED lamp bead in the external flash lamp is used for a long time, there is a deviation between the chromaticity and the luminous intensity, so that the actual luminous parameters such as the luminance and the chromaticity cannot reach the preset luminous parameters, and the expected light supplement effect cannot be achieved.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
One object of the present application is to provide a color correction device to realize color correction of an external flash lamp.
In order to solve the technical problem, the following technical scheme is adopted in the application:
according to one aspect of the application, the application provides a color correction device for correcting color of an external flash lamp; the color correction apparatus includes:
the light-emitting information acquisition unit is used for acquiring light-emitting information of the external flash lamp;
the color correction processing unit is electrically connected with the luminous information acquisition unit and is used for performing color correction processing according to the luminous information to generate color correction result information;
the communication unit is used for communicating with the external flash lamp; the communication unit is electrically connected with the color correction processing unit to receive the color correction result information and send the color correction result information to the external flash lamp, so that the external flash lamp corrects and emits light according to the color correction result information.
According to an embodiment of the application, the communication unit comprises a wireless communication unit, and the wireless communication unit is electrically connected with the color correction processing unit to receive the color correction result information and transmit the color correction result information to the external flash lamp in a wireless transmission mode.
According to an embodiment of the application, the communication unit comprises a communication interface, the communication interface is electrically connected with the color correction processing unit, and the communication interface is electrically connected with the external flash lamp through a connecting wire so as to transmit the color correction result information to the external flash lamp.
According to an embodiment of the application, the color correction device further comprises a burning unit, and the burning unit is electrically connected with the color correction processing unit and the external flash lamp and is used for burning color correction result information output by the communication interface into a control chip of the external flash lamp.
According to an embodiment of the application, the school colour equipment still has the time sequence control unit, the time sequence control unit with luminous information acquisition unit and external flash light is all connected electrically, the time sequence control unit is used for controlling external flash light is luminous with predetermineeing the chronogenesis, and control luminous information acquisition unit gathers with predetermined chronogenesis luminous information.
According to an embodiment of the application, the light emitting information includes one or more of brightness, chromaticity and saturation of light emitted by the external flash.
According to an embodiment of the present application, the external flash lamp includes a plurality of LED light sources; and/or
The lighting information comprises one or more of the brightness, the chromaticity and the saturation of each LED light source in the plurality of LED light sources.
According to an embodiment of the present application, the color correction apparatus further includes a receiving unit;
the receiving unit is electrically connected with the light-emitting information acquisition unit and the color correction processing unit, and is used for receiving one or more of color correction instructions, color correction setting parameters and color correction modes.
According to an embodiment of the present application, the color correction apparatus further includes a display unit, and the display unit is electrically connected to the color correction processing unit and configured to display a Graphic User Interface (GUI) Interface.
According to another aspect of the present application, a color correction system for an external flash lamp is provided, which is characterized by comprising the external flash lamp and the color correction device. The light-emitting information acquisition unit of the color correction device is used for acquiring the light-emitting information of the external flash lamp, and the color correction processing unit of the color correction device is used for performing color correction processing according to the light-emitting information to generate color correction result information; and the communication unit of the color correction equipment is communicated with the external flash lamp so as to send the color correction result information to the external flash lamp.
The light-emitting information acquisition unit in the technical scheme can acquire the light-emitting information of the external flash lamp; the color correction processing unit performs color correction processing according to the light-emitting information to generate color correction result information; and the color correction result information is used for being transmitted to the external flash lamp so as to correct the light emission of the external flash lamp, and the light emission of the external flash lamp is corrected.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a block diagram illustrating a circuit configuration of a color correction apparatus according to an example embodiment.
Fig. 2 is a block diagram of a circuit configuration of a color correction system of an external flash according to an exemplary embodiment.
The reference numerals are explained below: 10. an external flash lamp; 20. a color correction device; 21. a light-emitting information acquisition unit; 22. a color correction processing unit; 23. a communication unit.
Detailed Description
While this application is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the application and is not intended to limit the application to that as illustrated herein.
Thus, a feature indicated in this specification is intended to describe one of the features of an embodiment of the application and does not imply that every embodiment of the application must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.
In the embodiments shown in the drawings, directional references (such as up, down, left, right, front, and rear) are used to explain the structure and movement of the various elements of the present application not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
The preferred embodiments of the present application will be further described in detail below with reference to the accompanying drawings of the present specification.
The method comprises the steps that firstly, a color correction device is provided, the color correction device is used for correcting the color of the external flash lamp, and the color correction can be realized by matching the actual light-emitting parameter of the external flash lamp with the set light-emitting parameter; the consistency of the light-emitting parameters of each LED lamp bead in the external flash lamp can be adjusted.
Please refer to fig. 1 and fig. 2. In one embodiment, the color correction apparatus 20 includes a light-emitting information acquisition unit 21, a color correction processing unit 22, and a communication unit 23. The light-emitting information acquisition unit 21 is used for acquiring light-emitting information of the external flash lamp 10; the color correction processing unit 22 is electrically connected with the luminescence information acquisition unit 21 and is used for performing color correction processing according to the luminescence information to generate color correction result information; a communication unit 23 for communicating with the external flash lamp 10; the communication unit 23 is electrically connected to the color correction processing unit 22 to receive the color correction result information and transmit the color correction result information to the external flash 10, so that the external flash 10 can correct and emit light according to the color correction result information.
The lighting information here includes one or more kinds of information of luminance, chromaticity, saturation, and the like. The external flash 10 may be used as a whole to collect the brightness, chromaticity, saturation, and other parameters. In another embodiment, the lighting information is that the flash lamp includes a plurality of LED light sources, and each of the LED light sources has one or more of parameters of brightness, chromaticity, saturation, and the like, and one or more of parameters of chromaticity and saturation. That is, in this embodiment, each LED light source is used as a minimum unit to perform emission correction on each LED in a targeted manner, so as to improve the accuracy of emission correction. When in detection, each LED light source can be made to emit light independently, so that the light emitting information of the LED light source can be acquired.
The light emission information collecting unit 21 may include a color pickup unit, a data conversion unit, a filtering unit, and the like. The color pickup unit may include various types of photosensors according to an object to be corrected; such as a luminance sensor, a chrominance sensor, a color temperature sensor, etc. The light emission information collecting unit 21 generally has a collecting window exposed on the surface of the color correction device 20. The collection window is disposed facing the light emitting surface of the external flash 10, so that the color pickup unit can receive the light emitted from the external flash 10. Here, the light emitted from the external flash 10 may be picked up a plurality of times. Illustratively, the external flash 10 is operated in a plurality of lighting modes to sample lighting information. The light emission mode here includes a flash mode, a model lamp mode, a normally on mode, and the like. In each mode, the lighting information is picked up at least once. The data conversion unit is used for converting the analog quantity of the sampled luminescence information into corresponding digital quantity. The filtering unit is used for filtering the input or the output of the data conversion unit so as to reduce noise interference.
The color correction processing unit 22 may include a data arrangement unit and a data processing unit. The data arrangement unit performs data arrangement on the collected luminescence information data. The specific data arrangement mode may be determined according to a color correction algorithm, or may be arranged in a one-to-one correspondence according to the position arrangement of the LEDs in the external flash 10.
The data processing unit can be stored with a color correction processing algorithm, and the color correction processing algorithm carries out logic calculation on the arranged luminous data so as to produce color correction result information. The color correction result information may be an adjustment program or a specific light emission correction value.
Illustratively, in one example, the data processing unit includes a correction chip having therein a correction coefficient matrix, and the calculation processing is performed on the arranged sample data based on the correction coefficient matrix.
Or, the preset parameter value is compared with the sampled emission information arrangement data to correct the driving current of the external flash 10, and the corrected driving current drives the external flash 10 to enable the actual emission parameter of the flash to exactly match the set parameter.
Here, the color correction processing unit 22 and the light-emitting information collecting unit 21 may both be circuits, and both may be arranged on the same circuit board. Or the two circuit boards can be respectively arranged on the two circuit boards, and data interaction is carried out through the flat cables.
The light-emitting information acquisition unit 21 in the technical scheme of the application can acquire light-emitting information of the external flash lamp 10; the color correction processing unit 22 performs color correction processing according to the light emitting information to generate color correction result information; the communication unit 23 is electrically connected to the color correction processing unit 22 to receive the color correction result information and transmit the color correction result information to the external flash lamp 10 in a wireless transmission manner, so that the external flash lamp 10 corrects the light emission according to the color correction result information. Therefore, the scheme of the application realizes the correction of the light emission of the external flash lamp 10.
In one embodiment, the communication unit 23 includes a wireless communication unit 23, and the wireless communication unit 23 is electrically connected to the color calibration processing unit 22 to receive the color calibration result information and transmit the color calibration result information to the external flash 10 through wireless transmission.
The wireless communication unit 23 may be built in the color calibration device 20, or may be externally disposed outside the color calibration device 20, such as an external USB wireless transceiver. The wireless communication unit 23 may be a bluetooth module, a WIFI module, a zigbee module, a broadcasting module, or the like. It should be understood that a wireless communication module communicatively connected to the wireless communication unit 23 is disposed in the external flashlight 10.
The embodiment improves the convenience of communication between the color correction device 20 and the external flash lamp 10, and can avoid setting interfaces on the color correction device 20 and the external flash lamp 10 through the wireless communication unit 23. More importantly, the wireless communication unit 23 can allow the distance between the color calibration device 20 and the external flash lamp 10 to be flexibly adjusted, so that different light-emitting information can be collected based on different distances, and the calibration accuracy and the target calibration flexibility are improved. Here, the correction target may be set to the correction of the light emission parameters of the external flash 10 at different light emission strokes.
In another embodiment, the color calibration apparatus 20 further has a communication interface, the communication interface is electrically connected to the color calibration processing unit 22, and the communication interface is electrically connected to the external flash 10 through a connection line to transmit the color calibration result information to the external flash 10. Here, the communication interface may be one of a USB interface, a TYPE C interface, an RS232 interface, an RS485 interface, and the like. Here, there may be one or more communication interfaces.
The external flash 10 includes a control chip, a driving circuit, and a light source unit. The control chip sends a control signal to the driving circuit, and the driving circuit drives the light source unit to emit light. In one embodiment, the color correction processing unit 22 sends the color correction result information to the control chip or the driving circuit of the external flash 10 through the communication unit 23 to directly correct the light emission of the light source unit. This embodiment may be used for a corrective debugging process.
In another embodiment, the color calibration apparatus 20 further includes a burning unit electrically connected to the color calibration processing unit 22 and the external flash 10, for burning the color calibration result information output by the communication interface into the control chip of the external flash 10. In this embodiment, the burning unit can perform handshake communication with the control chip and satisfy the related communication protocol to smoothly perform program burning, thereby fundamentally correcting the problem of deviation of the light emitting effect of the external flash lamp 10.
The burning unit and the color calibration processing unit 22 can be directly electrically connected or indirectly electrically connected, that is, the burning unit is electrically connected 22 with the color calibration processing unit through the communication unit 23. The burning unit may be built in the housing of the color correction device 20; or be externally arranged outside the shell of the color correction device to form a solid module.
In an embodiment, the color correction device 20 further has a timing control unit, the timing control unit is electrically connected to the light-emitting information collecting unit 21 and the external flash 10, and the timing control unit is configured to control the external flash 10 to emit light at a preset timing and control the light-emitting information collecting unit 21 to collect light-emitting information at a preset timing.
Here, the timing control unit is configured to issue a timing control command, and the timing control command may include a light-emitting mode execution sequence, a light-emitting frequency, a brightness change timing, a color change timing, and the like of the external flash 10. The time sequence control unit also controls the light-emitting information acquisition unit 21 to acquire the light emitted by the external flash lamp 10 according to a preset time sequence, so that the acquisition time sequence and the light-emitting time sequence have synchronism, the time sequence information corresponding to the acquired light-emitting information can be determined, and the correction accuracy is improved. Moreover, the embodiment allows the light-emitting information acquisition unit 21 not to perform data acquisition when the external flash lamp 10 does not emit light, thereby being beneficial to reducing noise interference suffered by the light-emitting information acquisition unit 21 and improving the accuracy of data arrangement; and is beneficial to saving energy.
In an embodiment, the color correction device 20 further comprises a receiving unit; the receiving unit is electrically connected with the light-emitting information acquisition unit 21 and the color correction processing unit 22, and is used for receiving one or more of color correction instructions, color correction setting parameters and color correction modes.
In an example, the receiving unit may be a touch screen component, a key component, a voice input component, and the like, for a user to input a color correction related instruction. When the user sends a color correction instruction, the light emission information acquisition unit 21 starts to acquire light emission information, and the color correction processing unit 22 further starts to perform data processing. The received color correction setting parameters comprise color correction precision parameters, color correction target parameters and the like. The color correction mode can include a brightness correction mode, a chroma correction mode, a saturation correction mode and a comprehensive correction mode (simultaneously correcting brightness, chroma, saturation and the like)
In one embodiment, the color correction apparatus 20 further includes a display unit electrically connected to the color correction processing unit 22 to display a color correction control GUI interface under the control of the color correction processing unit 22. The display unit can be a display screen and also can be a screen projection assembly. Here, the color correction application software may be stored in the color correction device 20 (specifically, in the color correction processing unit 22) in advance, and when the color correction application software is executed, the color correction control GUI interface may be displayed on the display screen. The color correction control GUI interface is provided with a plurality of controls for users to send out color correction control instructions, set color correction parameters, select a color correction mode and the like. The color correction control GUI interface may also have a display window to display the color correction process. The embodiment improves the intellectualization of the color correction device 20, improves the man-machine interaction capability, and is convenient for a user to correct different parameters of the external flash lamp 10 according to the requirement of the user and to correct the parameters to target parameters meeting the requirement of the user.
The "units" mentioned in the above embodiments, such as the light-emitting information acquisition unit 21, the color correction processing unit 22, the communication unit 23, the burning unit, the timing control unit, the receiving unit, the display unit, and the like, can be constructed by using physical circuits.
The light emission information and the color correction result information only indicate the substantial meaning of the signal. In fact, during the signal transmission process, the signal may have a form change, such as conversion of analog quantity and digital quantity, transmission in the form of a single signal or transmission in the form of a packet, and the like, and is not limited in particular.
In another aspect of the present application, a color correction system of the external flash 10 is also provided. The color correction system comprises an external flash 10 and the color correction device 20 in the above embodiments. The color correction device 20 and the external flash 10 can transmit data and instructions in a wired or wireless manner. The color correction system realizes light emission correction for the external flash 10.
While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.
Claims (10)
1. The color correction equipment is used for correcting the color of an external flash lamp; characterized in that the color correction apparatus comprises:
the light-emitting information acquisition unit is used for acquiring light-emitting information of the external flash lamp;
the color correction processing unit is electrically connected with the luminous information acquisition unit and is used for performing color correction processing according to the luminous information to generate color correction result information;
the communication unit is used for communicating with the external flash lamp; the communication unit is electrically connected with the color correction processing unit to receive the color correction result information and send the color correction result information to the external flash lamp, so that the external flash lamp corrects and emits light according to the color correction result information.
2. The color correction device according to claim 1, wherein the communication unit comprises a wireless communication unit, and the wireless communication unit is electrically connected with the color correction processing unit to receive the color correction result information and transmit the color correction result information to the external flash lamp in a wireless transmission mode.
3. The color correction device according to claim 1, wherein the communication unit comprises a communication interface, the communication interface is electrically connected with the color correction processing unit, and the communication interface is electrically connected with the external flash lamp through a connecting wire so as to transmit the color correction result information to the external flash lamp.
4. The color correction device according to claim 3, further comprising a burning unit electrically connected to the color correction processing unit and the external flash, for burning the color correction result information output by the communication interface into a control chip of the external flash.
5. The color correction device according to claim 1, further comprising a timing control unit electrically connected to the light-emitting information acquisition unit and the external flash, wherein the timing control unit is configured to control the external flash to emit light in a preset timing sequence and control the light-emitting information acquisition unit to acquire the light-emitting information in a preset timing sequence.
6. The color correction device according to claim 1, wherein the light-emitting information comprises one or more of brightness, chromaticity and saturation of the light emitted by the external flash.
7. The color correction device according to claim 1, wherein the external flash comprises a plurality of LED light sources; and/or
The lighting information comprises one or more of the brightness, the chromaticity and the saturation of each LED light source in the plurality of LED light sources.
8. The color correction apparatus according to claim 1, further comprising a receiving unit;
the receiving unit is electrically connected with the light-emitting information acquisition unit and the color correction processing unit, and is used for receiving one or more of color correction instructions, color correction setting parameters and color correction modes.
9. The apparatus according to claim 1, further comprising a display unit electrically connected to the color correction processing unit for displaying a color correction control GUI (graphical user interface) interface.
10. A color correction system of an external flash lamp, which is characterized by comprising the external flash lamp and the color correction device of any one of claims 1 to 9; the light-emitting information acquisition unit of the color correction device is used for acquiring the light-emitting information of the external flash lamp, and the color correction processing unit of the color correction device is used for performing color correction processing according to the light-emitting information to generate color correction result information; and the communication unit of the color correction equipment is communicated with the external flash lamp so as to send the color correction result information to the external flash lamp.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109396.3A CN113050345A (en) | 2021-01-22 | 2021-01-22 | Color correction equipment and color correction system of external flash lamp |
| US18/259,338 US20240053659A1 (en) | 2021-01-22 | 2021-06-22 | Color correction device and color correction system for external flash lamp |
| PCT/CN2021/101594 WO2022156146A1 (en) | 2021-01-22 | 2021-06-22 | Color correction device and color correction system for external flash lamp |
| EP21920527.5A EP4283396A1 (en) | 2021-01-22 | 2021-06-22 | Color correction device and color correction system for external flash lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110109396.3A CN113050345A (en) | 2021-01-22 | 2021-01-22 | Color correction equipment and color correction system of external flash lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113050345A true CN113050345A (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110109396.3A Pending CN113050345A (en) | 2021-01-22 | 2021-01-22 | Color correction equipment and color correction system of external flash lamp |
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| Country | Link |
|---|---|
| CN (1) | CN113050345A (en) |
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2021
- 2021-01-22 CN CN202110109396.3A patent/CN113050345A/en active Pending
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