CN114002868A - Image generation method, device, equipment and storage medium based on LCD liquid crystal panel - Google Patents
Image generation method, device, equipment and storage medium based on LCD liquid crystal panel Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 160
- 238000000034 method Methods 0.000 title claims abstract description 92
- 238000005286 illumination Methods 0.000 claims abstract description 139
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- 238000002329 infrared spectrum Methods 0.000 claims description 5
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- 206010070834 Sensitisation Diseases 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
- G02F1/13318—Circuits comprising a photodetector
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1313—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells specially adapted for a particular application
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
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Abstract
The embodiment of the invention discloses an image generation method, an image generation device, image generation equipment and a storage medium based on an LCD (liquid crystal display) liquid crystal panel, wherein the image generation method comprises a camera and the LCD liquid crystal panel associated with the camera, the LCD liquid crystal panel is arranged between a lens of the camera and an image sensor or the lens of the camera is arranged between the LCD liquid crystal panel and the image sensor, and the method comprises the following steps: obtaining external illumination intensity, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity; determining corresponding adjusting voltage or adjusting current according to the light passing rate; and controlling the voltage or the current of the LCD liquid crystal panel to be the regulated voltage or the regulated current so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image. The scheme optimizes the camera shooting and imaging mechanism, expands the functions of the camera and is convenient to install.
Description
Technical Field
The embodiment of the application relates to the field of images, in particular to an image generation method, device, equipment and storage medium based on an LCD liquid crystal panel.
Background
The image sensor is a main component of the camera, and because the image sensor is a very precise photosensitive component, strong light can accelerate the aging of the image sensor and seriously affect the service life of the camera; when the excessively intense light is higher than the wide dynamic range of the camera, the picture shot by the camera is white or has too light color, and the image shooting quality is high; when the ambient light is too dark and is lower than the wide dynamic range of the camera, the picture shot by the camera is darker or too dark in color, and the image shooting quality is high; the external light is various, and the light filter with single depth cannot meet the actual requirement; in the field of face recognition, a visible light and near infrared binocular camera with stereoscopic vision is an existing technical form, if the near infrared camera can have an IR-CUT function and is switched to visible light, the stereoscopic vision can realize a VR camera function, the existing functions of a mobile phone are greatly expanded, however, the height of the mobile phone is often only 1 cm, and the purpose of miniaturization cannot be realized if a mechanical IR-CUT is used.
Disclosure of Invention
The embodiment of the invention provides an image generation method, an image generation device, image generation equipment and a storage medium based on an LCD (liquid crystal display) liquid crystal plate, which optimize a camera shooting and imaging mechanism, expand the realization function of a camera and are convenient to install.
In a first aspect, an embodiment of the present invention provides an image generation method based on an LCD liquid crystal panel, including:
obtaining external illumination intensity, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity;
determining corresponding adjusting voltage or adjusting current according to the light passing rate;
and controlling the voltage or the current of the LCD liquid crystal panel to be the regulated voltage or the regulated current so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image.
Optionally, the acquiring the external illumination intensity includes:
and obtaining the external illumination intensity through the arranged external photosensitive module.
Optionally, the acquiring the external illumination intensity includes:
the external illumination intensity is determined by image parameters detected by the image sensor, the image parameters including one or more of a white balance parameter, an image exposure value, and a transmittance of an LCD liquid crystal panel.
Optionally, after determining the light transmittance of the LCD panel according to the external illumination intensity, the method further includes:
and sending the light passing rate to an external system so that the external system can execute corresponding transmittance control processing according to the light passing rate.
Optionally, the determining the light transmittance of the LCD panel according to the external illumination intensity includes:
and the control module determines the light passing rate of the LCD liquid crystal panel according to the acquired external illumination intensity and the set light passing strategy.
Optionally, the determining, by the control module, the light passing rate of the LCD panel according to the obtained external illumination intensity and the set light passing policy includes:
and if the detected external illumination intensity is greater than the set threshold value, determining a first light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity so as to reduce the transmittance.
Optionally, the determining, by the control module, the light passing rate of the LCD panel according to the obtained external illumination intensity and the set light passing policy includes:
and if the external illumination intensity is not greater than the set threshold value, determining a second light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity to increase the transmittance.
Optionally, the filter of the camera is designed by a double-pass cut-off filter, the first channel is visible light spectrum, and the second channel is near infrared spectrum.
Optionally, if the second light passing rate is greater than a first set threshold, the image collected by the image sensor is subjected to white balance processing to reduce image redness.
Optionally, determining a corresponding adjustment voltage or adjustment current according to the light passing rate includes:
and determining the adjusting voltage or the adjusting current corresponding to the light passing rate according to the set transmittance voltage or transmittance current contrast curve.
Optionally, the transmittance voltage contrast curve or the transmittance current contrast curve records transmittance of different orders and voltage or current values corresponding to the transmittance of the orders.
In a second aspect, embodiments of the present invention further provide an image generating apparatus based on an LCD liquid crystal panel, the apparatus including:
the illumination intensity processing module is used for acquiring external illumination intensity and determining the light passing rate of the LCD panel according to the external illumination intensity;
the adjusting parameter determining module is used for determining corresponding adjusting voltage or adjusting current according to the light passing rate;
and the adjusting control module is used for controlling the voltage or the current of the LCD liquid crystal panel to be the adjusting voltage or the adjusting current so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image.
In a third aspect, an embodiment of the present invention further provides an image generating apparatus based on an LCD liquid crystal panel, including:
one or more processors;
a storage device for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors implement the method for generating an image based on an LCD liquid crystal panel according to an embodiment of the present invention.
In a fourth aspect, the present invention also provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are used to perform the method for generating an image based on an LCD liquid crystal panel according to the embodiments of the present invention.
In the embodiment of the invention, the external illumination intensity is acquired, the light passing rate of the LCD liquid crystal panel is determined according to the external illumination intensity, the corresponding regulating voltage or regulating current is determined according to the light passing rate, and the voltage or the current of the LCD liquid crystal panel is controlled to be the regulating voltage or the regulating current, so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate the image. The scheme optimizes the camera shooting and imaging mechanism, expands the functions of the camera and is convenient to install.
Drawings
FIG. 1 is a flow chart of an image generation method based on an LCD liquid crystal panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exemplary LCD panel;
FIG. 3 is a diagram illustrating an exemplary liquid crystal molecule flipping effect;
FIG. 4 is a schematic diagram of an exemplary liquid crystal polarization characteristic;
FIG. 5 is a schematic diagram of another exemplary liquid crystal panel;
FIG. 6 is a schematic diagram of another exemplary liquid crystal panel;
FIG. 7 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 8 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 9 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 10 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 11 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 12 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 13 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 14 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention;
FIG. 15 is a graph of an exemplary transmittance voltage versus curve;
FIG. 16 is a graph illustrating exemplary light transmittance curves for different wavelengths in the on and off states;
FIG. 17 is a block diagram of an image generation apparatus based on an LCD liquid crystal panel according to an embodiment of the present invention;
fig. 18 is a schematic structural diagram of an image generating apparatus based on an LCD panel according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad invention. It should be further noted that, for convenience of description, only some structures, not all structures, relating to the embodiments of the present invention are shown in the drawings.
Fig. 1 is a flowchart of an image generating method based on an LCD liquid crystal panel according to an embodiment of the present invention, where the embodiment is applicable to image generation, and the method may be implemented by an image generating device such as a mobile phone, a smart camera, a smart helmet, and the like, and specifically includes the following steps:
step S101, obtaining external illumination intensity, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity.
In one embodiment, the external illumination intensity is an ambient light intensity of an environment where the camera is currently located, such as an indoor environment, an outdoor environment, a daytime environment, a night-time environment, and the like. The LCD liquid crystal board is constructed by placing liquid crystal in two parallel pieces of glass, arranging many vertical and horizontal fine wires between the two pieces of glass, controlling the rod-shaped crystal molecules to change direction by electrifying or not, and refracting light to generate a picture.
The image generation device in the scheme comprises a camera and an LCD liquid crystal panel associated with the camera. The LCD liquid crystal panel is arranged between the lens of the camera and the image sensor or the lens of the camera is arranged between the LCD liquid crystal panel and the image sensor.
The light passing rate is used for representing the degree of light passing, the transparency degree of the LCD liquid crystal panel is represented, in the image generation process, light passes through the camera lens and the LCD liquid crystal panel and then irradiates the image sensor to generate an image signal, and then the image signal is processed through a corresponding image signal processing device/program to generate an image.
In one embodiment, an external illumination intensity is obtained from which the light throughput of the LCD panel is determined. Wherein, different external illumination intensities correspond to different light passing rates of the LCD liquid crystal panel. For example, after the intelligent camera starts to operate, obtaining the external illumination intensity to determine the light passing rate of the corresponding LCD panel; or when the photographing function is detected to be started, acquiring the external illumination intensity to determine the light passing rate of the corresponding LCD liquid crystal panel. In another embodiment, the light passing rate may also be determined according to a setting instruction of a user, if the user inputs the set light passing rate as a basis for adjustment.
And S102, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
The regulating voltage or regulating current is used for regulating and controlling the energizing voltage or energizing current of the LCD liquid crystal panel. Different light passing rates correspond to different regulated voltages and regulated currents. The control of the voltage or the current is adjusted to realize the shielding/non-shielding of the LCD liquid crystal panel.
Specifically, as shown in fig. 2, fig. 2 is a schematic diagram of an exemplary liquid crystal display. The LCD panel takes TN type liquid crystal as an example, the TN type liquid crystal is connected in series along the long axis direction, and the long axes are arranged in parallel with each other. When contacting the cell surface, the liquid crystal molecules are aligned in the cell along the direction of the cell. When liquid crystal is contained between two groove-like surfaces and the directions of the grooves are perpendicular to each other, the arrangement of the liquid crystal molecules is: upper surface molecule: along the a direction; surface molecules: along the direction b; molecules intermediate to the upper and lower surfaces: creating a spinning effect. The liquid crystal molecules are rotated by 90 degrees between the two groove-like surfaces. The deflection effect diagram is shown in fig. 3, and fig. 3 is an exemplary liquid crystal molecule inversion effect diagram. The liquid crystal is uniformly distributed under the action of voltage, namely when voltage is applied between the upper surface and the lower surface, liquid crystal molecules are arranged along the direction of an electric field to form a vertical arrangement phenomenon. At this time, the incident light is not affected by the liquid crystal molecules and is emitted out of the lower surface linearly.
FIG. 4 is a schematic diagram of an exemplary liquid crystal polarization characteristic. The LCD panel has the characteristics of a polarizer, as shown in fig. 4 (top), the non-polarized light (general light) is filtered into polarized light, when the non-polarized light passes through the polarizer in the a direction, the light is filtered into linear polarized light parallel to the a direction, the linear polarized light continues to advance, and when the non-polarized light passes through the second polarizer, the light passes through; as shown in fig. 4 (bottom), the linearly polarized light continues to pass through the second sheet, where it is completely blocked. In the specific control process of light passing performance, when the upper polarizer and the lower polarizer are perpendicular to each other, namely, the angle is 90 degrees, if no voltage is applied, light can pass through, and when the voltage is applied, light can be correspondingly shielded. After voltage is applied to the LCD panel, electric field variation is generated by current passing through the transistor to cause liquid crystal molecules to deflect, so that the polarization of light is changed, and the passing light is shielded/passed through the arranged polaroid to realize different bright and dark states.
Fig. 5 is a schematic diagram of another exemplary liquid crystal panel. Fig. 6 is a schematic diagram of another exemplary liquid crystal panel. The biggest difference from the one shown in fig. 2 is that no polarizing plate is required, and the inner wall of the liquid crystal container is not provided with a groove-like surface. When no current is applied, as shown in fig. 5, the liquid crystal molecules contained in the glass film are in a disordered arrangement state due to no traction of the inner wall groove-shaped surface, and light cannot penetrate through the glass film, so that the glass film is seen in a white non-transparent state. When the power is turned on, as shown in fig. 6, the liquid crystal molecules inside the glass film are orderly arranged, and light can smoothly penetrate through the glass film, so that the glass film is seen to be transparent.
As can be seen from the foregoing description, the application of different adjustment voltages to the LCD panel can control the light transmittance to achieve a change in the brightness state of the image. Similarly, the light passing rate can be controlled by applying different adjusting currents to the LCD liquid crystal panel to realize the change of the brightness state of the image. In one embodiment, after the light passing rate is determined according to the external illumination intensity, the adjusting voltage corresponding to the light passing rate is correspondingly determined.
Step S103, controlling the voltage or current of the LCD panel to be the regulated voltage or regulated current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
After the adjusting voltage or the adjusting current corresponding to the light passing rate is determined, the corresponding adjusting voltage or the corresponding adjusting current is correspondingly applied to the LCD to control the light passing rate, the image sensor is used for sensing to generate a signal, and then the control module or the CPU is used for processing the signal to generate a final image.
In one embodiment, in order to ensure good image imaging effect, when the external illumination intensity is too strong, the LCD liquid crystal panel is used for shielding light; when the external illumination intensity is weakened, the shielding of the LCD liquid crystal panel to light rays is correspondingly reduced, thereby improving the image quality.
According to the scheme, the image generation method in the scheme is based on the LCD liquid crystal panel and comprises the camera and the LCD liquid crystal panel associated with the camera, wherein the LCD liquid crystal panel is arranged between the lens of the camera and the image sensor or between the lens of the camera and the image sensor, the light passing rate of the LCD liquid crystal panel is determined according to the external illumination intensity by acquiring the external illumination intensity, the corresponding adjusting voltage or adjusting current is determined according to the light passing rate, and the voltage or current of the LCD liquid crystal panel is controlled to be the adjusting voltage or adjusting current, so that the LCD liquid crystal panel processes passing light and then induces the passing light through the image sensor to generate the image. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates an image after adjusting the brightness of the corresponding image according to the external illumination intensity, thereby optimizing a camera imaging mechanism and expanding the realization function of the camera. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module.
Fig. 7 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention, in which the specific manner of obtaining the external illumination intensity is further defined. As shown in fig. 7, the specific process is as follows:
step S201, obtaining external illumination intensity through an external photosensitive module, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity.
In one embodiment, the external illumination intensity is collected by an external photosensitive module provided. For example, the photosensitive module may be a photosensitive sensor, which is a sensor for converting the intensity of illumination into an electrical signal, and the output value is measured in Lux. The external illumination intensity under the current environment is determined by light induction through the arranged illumination sensor.
Step S202, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
Step S203, controlling the voltage or current of the LCD panel to be the regulated voltage or regulated current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
According to the scheme, the image generation method in the scheme is based on the LCD liquid crystal panel and comprises a camera and the LCD liquid crystal panel associated with the camera, wherein the LCD liquid crystal panel is arranged between a lens of the camera and an image sensor or between the LCD liquid crystal panel and the image sensor, the external illumination intensity is obtained through an external photosensitive module, the light passing rate of the LCD liquid crystal panel is determined according to the external illumination intensity, the corresponding adjusting voltage or adjusting current is determined according to the light passing rate, and the voltage or current of the LCD liquid crystal panel is controlled to be the adjusting voltage or adjusting current, so that the LCD liquid crystal panel processes passing light and then induces the passing light through the image sensor to generate an image. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates an image after adjusting the brightness of the corresponding image according to the external illumination intensity, thereby optimizing a camera imaging mechanism and expanding the realization function of the camera. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module. Outside illumination intensity is gathered through the outside sensitization module of integrated setting, and is more high-efficient convenient.
Fig. 8 is a flow chart of another method for generating an image based on an LCD panel according to an embodiment of the present invention, in which the specific manner of obtaining the external illumination intensity is further defined. As shown in fig. 8, the specific process is as follows:
step S301, determining external illumination intensity through the image parameters detected by the image sensor, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity.
In one embodiment, the external illumination intensity is determined from image parameters detected by an image sensor. Specifically, the external illumination intensity is determined according to the brightness mean value of the currently generated image picture. For example, the average brightness of the image frame may be determined by averaging photometry, center point photometry, multi-point photometry, center point photometry, local photometry or partition photometry, and then the corresponding external illumination intensity may be determined according to the average brightness of the image frame. Specifically, a comparison table of the external illumination intensity and the brightness mean value of the image picture can be recorded, and the external illumination intensity corresponding to the obtained brightness mean value of the image picture is determined according to the comparison table.
Step S302, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
Step S303, controlling the voltage or current of the LCD panel to be the regulated voltage or regulated current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
According to the scheme, the image generation method in the scheme is based on the LCD liquid crystal panel and comprises a camera and the LCD liquid crystal panel associated with the camera, wherein the LCD liquid crystal panel is arranged between a lens of the camera and an image sensor or between the LCD liquid crystal panel and the image sensor, the external illumination intensity is determined according to image parameters detected by the image sensor, the light passing rate of the LCD liquid crystal panel is determined according to the external illumination intensity, the corresponding adjusting voltage or adjusting current is determined according to the light passing rate, and the voltage or current of the LCD liquid crystal panel is controlled to be the adjusting voltage or adjusting current so that the LCD liquid crystal panel can sense the passing light through the image sensor to generate the image after processing the passing light. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates an image after adjusting the brightness of the corresponding image according to the external illumination intensity, thereby optimizing a camera imaging mechanism and expanding the realization function of the camera. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module. In the scheme, the external illumination intensity is determined through the generated image, extra hardware expenditure is not needed, and the cost is reduced.
Fig. 9 is a flowchart of another LCD panel-based image generation method according to an embodiment of the present invention, which further utilizes the determined light passing rate after determining the light passing rate of the LCD panel according to the external illumination intensity. As shown in fig. 9, the specific process is as follows:
step S401, obtaining the external illumination intensity, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity.
Step S402, sending the light passing rate to an external system, so that the external system executes corresponding transmittance control processing according to the light passing rate.
In one embodiment, after determining the light passage rate, the light passage rate is sent to an external system for the external system to perform a corresponding transmittance control process according to the light passage rate. For example, in the case where the image generating apparatus is integrated in a vehicle, LCD liquid crystal panels are mounted on a front windshield and a side glass of the vehicle, and the light passing rate can be controlled. After the light passing rate is determined, LCD liquid crystal panels are installed on the other corresponding windshield and the side glass to execute the same light processing strategy, so that vehicle personnel can observe the conditions outside the vehicle with proper light brightness.
And S403, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
Step S404, controlling the voltage or current of the LCD panel to be the regulated voltage or regulated current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
According to the scheme, the light passing rate is sent to the external system so that the external system can execute corresponding transmittance control processing according to the light passing rate, various different function linkage is achieved, and the overall processing efficiency of the system is improved. Meanwhile, by acquiring external illumination intensity, determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity, determining corresponding adjusting voltage or adjusting current according to the light passing rate, and controlling the voltage or current of the LCD liquid crystal panel to be the adjusting voltage or adjusting current, so that the LCD liquid crystal panel processes passing light and then induces the passing light through the image sensor to generate an image. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates an image after adjusting the brightness of the corresponding image according to the external illumination intensity, thereby optimizing a camera imaging mechanism and expanding the realization function of the camera. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module.
Fig. 10 is a flowchart of another LCD panel-based image generation method according to an embodiment of the present invention, which shows a specific manner of determining the light transmittance of the LCD panel according to the external illumination intensity. As shown in fig. 10, the specific process is as follows:
step S501, obtaining the external illumination intensity, and determining the light passing rate of the LCD according to the obtained external illumination intensity and the set light passing strategy by the control module.
In one embodiment, after obtaining the external illumination intensity, the light passing rate of the corresponding LCD liquid crystal panel is determined according to the set light passing strategy. Specifically, the light passing rate may be determined by a set correspondence rule, or may be determined according to a set comparison table. In another embodiment, the method also comprises the adaptive adjustment of the comparison table, and the filtering adjustment of the LCD liquid crystal panel can be carried out according to different environmental scenes.
And step S502, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
Step S503, controlling the voltage or current of the LCD panel to be the regulated voltage or regulated current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
According to the above, by obtaining the external illumination intensity, the control module determines the light passing rate of the LCD liquid crystal panel according to the obtained external illumination intensity and the set light passing strategy, determines the corresponding adjusting voltage or adjusting current according to the light passing rate, and controls the voltage or current of the LCD liquid crystal panel to be the adjusting voltage or adjusting current, so that the LCD liquid crystal panel processes the passing light and then senses the passing light through the image sensor to generate an image. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates an image after adjusting the brightness of the corresponding image according to the external illumination intensity, thereby optimizing a camera imaging mechanism and expanding the realization function of the camera. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module.
Fig. 11 is a flowchart of another LCD panel-based image generation method according to an embodiment of the present invention, which shows a specific manner in which the control module determines the light passing rate of the LCD panel according to the obtained external illumination intensity and the set light passing policy. As shown in fig. 11, the specific process is as follows:
step S601, obtaining external illumination intensity, and if the external illumination intensity is detected to be larger than a set threshold value, determining a first light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity so as to reduce transmittance.
In one embodiment, if the external illumination intensity is detected to be greater than a set threshold value, a first light passing rate corresponding to the LCD liquid crystal panel is determined according to the external illumination intensity. Wherein the set threshold may be 8000Lux, the first light passing rate may be 50% and the corresponding external illumination intensity is 20000 Lux. I.e. when a relatively high external light intensity is detected, a correspondingly low light throughput is determined.
Step S602, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
Step S603, controlling the voltage or current of the LCD panel to be the regulated voltage or regulated current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
According to the above, if it is detected that the external illumination intensity is greater than the set threshold, the first light passing rate corresponding to the LCD liquid crystal panel is determined according to the external illumination intensity to reduce the transmittance, the corresponding adjustment voltage or adjustment current is determined according to the light passing rate, and the voltage or current of the LCD liquid crystal panel is controlled to be the adjustment voltage or adjustment current, so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates an image after adjusting the brightness of the corresponding image according to the external illumination intensity, thereby optimizing a camera imaging mechanism and expanding the realization function of the camera. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module.
Fig. 12 is a flowchart of another LCD panel-based image generation method according to an embodiment of the present invention, which shows another specific manner for determining the light passing rate of the LCD panel according to the obtained external illumination intensity and the set light passing policy by the control module. As shown in fig. 12, the specific process is as follows:
and step S701, obtaining the external illumination intensity, and if the external illumination intensity is not larger than the set threshold value, determining a second light passing rate corresponding to the LCD according to the external illumination intensity to increase the transmittance.
In one embodiment, if the external illumination intensity is not greater than the set threshold, determining a second light passing rate corresponding to the LCD panel according to the external illumination intensity. Wherein, the set threshold may be 8000Lux, the second light passing rate may be 100% and the corresponding external illumination intensity may be 2000 Lux. I.e. when a relatively low external light intensity is detected, to correspondingly increase the light throughput.
Step S702, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
Step S703 of controlling the voltage or current of the LCD panel to be the adjusted voltage or adjusted current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
According to the above, by obtaining the external illumination intensity, if it is detected that the external illumination intensity is not greater than the set threshold, determining a second light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity to increase the transmittance, determining a corresponding adjustment voltage or adjustment current according to the light passing rate, and controlling the voltage or current of the LCD liquid crystal panel to be the adjustment voltage or adjustment current, so that the LCD liquid crystal panel processes the passing light and then senses the passing light through the image sensor to generate an image. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates images after adjusting the brightness of the corresponding images according to the external illumination intensity, thereby optimizing a camera imaging mechanism, expanding the realization function of the camera and realizing dynamic image brightness adjustment. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module.
Fig. 13 is a flowchart of another image generation method based on an LCD liquid crystal panel according to an embodiment of the present invention, which further controls the camera imaging. As shown in fig. 13, the specific process is as follows:
step S801, obtaining the external illumination intensity, and the control module determines the light passing rate of the LCD panel according to the obtained external illumination intensity and the set light passing policy.
Step S802, determining corresponding adjusting voltage or adjusting current according to the light passing rate.
Step S803, controlling the voltage or current of the LCD panel to be the regulated voltage or regulated current, so that the LCD panel processes the passing light.
Step S804, determining whether the light passing rate is greater than a first set threshold, if so, performing step S805.
In one embodiment, the camera is integrated with a filter, wherein the filter is designed as a double-pass cut-off filter, the first channel is visible light spectrum, the corresponding passing wavelength is 400nm to 700nm, the second channel is near infrared spectrum, and the corresponding passing wavelength is 820 nm, 850 nm, 890 nm, 920 nm and/or 940 nm. When the external illumination intensity is not greater than the set threshold, after determining the corresponding light passing rate, further determining whether to perform auxiliary image processing according to the light passing rate. Specifically, whether the light passing rate is greater than a first set threshold, which is 100% as an example, that is, when the light passing rate has reached 100% in a dark environment, because the near infrared rays of 400nm to 700nm pass through the optical filter (supplementary lighting), the problem of image blushing may be caused, and when the condition is satisfied, the process jumps to step S805 to perform white balance processing on the image acquired by the image sensor to reduce the image blushing.
And step S805, carrying out white balance processing on the image collected by the image sensor to reduce the image redness.
The white balance processing refers to that under the environment with different color temperatures, image adjustment is carried out through an ISP algorithm to offset color cast caused by the color temperatures, so that the photographed imaging effect is close to the visual habit of human eyes. The algorithm specifically used includes: maximum brightness, gray world, color gamut boundary, frame region segmentation, light source prediction, perfect reflection, dynamic threshold, or fuzzy logic.
According to the scheme, the optical filter of the camera adopts a double-pass cut-off optical filter design, the first channel is a visible light spectrum, the corresponding passing wavelength is 400-700 nanometers, the second channel is a near infrared spectrum, the corresponding passing wavelength is 820, 850, 890, 920 and/or 940 nanometers, and if the determined second light passing rate is greater than a first set threshold value, white balance processing is performed on the image acquired by the image sensor to reduce image blushing, the camera shooting imaging mechanism is optimized, and the function of achieving the camera is expanded. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module.
Fig. 14 is a flowchart of another method for generating an image based on an LCD panel according to an embodiment of the present invention, which shows a specific manner for determining the corresponding adjustment voltage or adjustment current according to the light passing rate. As shown in fig. 14, the specific flow is as follows:
step S901, determining an external illumination intensity according to the image parameter detected by the image sensor, and determining a light transmittance of the LCD panel according to the external illumination intensity.
Step S902, determining the adjusting voltage or the adjusting current corresponding to the light passing rate according to the set transmittance voltage or transmittance current contrast curve, wherein the transmittance voltage contrast curve or the transmittance current contrast curve records the transmittance of different orders and the voltage value or the current value corresponding to the transmittance of the orders.
In one embodiment, the adjustment voltage or the adjustment current corresponding to the light transmittance is determined according to a set transmittance voltage or transmittance current comparison curve, as shown in fig. 15, and fig. 15 is an exemplary transmittance voltage comparison curve. The abscissa is the voltage value and the ordinate is the corresponding light passing rate. The required regulating voltage corresponding to the light passing rate can be obtained by inquiring the curve.
In one embodiment, when the set transmittance is 0, only near infrared light can pass through, so that the IR-CUT spectrum switching function is realized. As shown in fig. 16, fig. 16 is a graph illustrating an exemplary light transmittance curve for different wavelengths in the on-state and the off-state. The abscissa is the wavelength of different light, and the ordinate is the corresponding light passing rate in the on-state and the off-state. The curve can be obtained by inquiring, the light passing rate of more than 400nm in the on state is good, namely visible light (400nm-700nm) and near infrared light (more than 700nm) can pass through; in an off state, the passing rate of visible light is almost 0, and near infrared light larger than 800nm can normally pass through to realize the near infrared imaging function, so that the near infrared channel of the double-pass CUT-off filter is matched to realize the spectrum switching function of the IR-CUT as a static controllable device.
And step S903, controlling the voltage or the current of the LCD liquid crystal panel to be the regulated voltage or the regulated current so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image.
According to the above, by obtaining the external illumination intensity, determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity, determining the corresponding adjusting voltage or adjusting current according to the light passing rate, and controlling the voltage or current of the LCD liquid crystal panel to be the adjusting voltage or adjusting current, the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image. The scheme ingeniously combines the LCD liquid crystal panel with the camera, and generates an image after adjusting the brightness of the corresponding image according to the external illumination intensity, thereby optimizing a camera imaging mechanism and expanding the realization function of the camera. Simultaneously, this kind of control mode is convenient for install, has reduced the whole volume size of camera module.
Fig. 17 is a block diagram of an image generating apparatus based on an LCD panel according to an embodiment of the present invention, which is used for executing the image generating method based on an LCD panel according to the above embodiment, and has corresponding functional modules and beneficial effects. As shown in fig. 17, the apparatus specifically includes: an illumination intensity processing module 101, an adjustment parameter determining module 102 and an adjustment control module 103, wherein,
the illumination intensity processing module 101 is used for acquiring external illumination intensity and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity;
the adjusting parameter determining module 102 is configured to determine a corresponding adjusting voltage or adjusting current according to the light passing rate;
and the adjustment control module 103 is configured to control the voltage or the current of the LCD panel to be the adjustment voltage or the adjustment current, so that the LCD panel processes the passing light and then senses the light through the image sensor to generate an image.
According to the scheme, the external illumination intensity is obtained, the light passing rate of the LCD liquid crystal panel is determined according to the external illumination intensity, the corresponding adjusting voltage or adjusting current is determined according to the light passing rate, and the voltage or current of the LCD liquid crystal panel is controlled to be the adjusting voltage or adjusting current, so that the LCD liquid crystal panel processes passing light and then induces the passing light through the image sensor to generate an image.
In a possible embodiment, the illumination intensity processing module 101 is specifically configured to:
and obtaining the external illumination intensity through the arranged external photosensitive module.
In a possible embodiment, the illumination intensity processing module 101 is specifically configured to:
the external illumination intensity is determined by image parameters detected by the image sensor, the image parameters including one or more of a white balance parameter, an image exposure value, and a transmittance of an LCD liquid crystal panel.
In one possible embodiment, the apparatus further comprises a light passing rate sending module, configured to send the light passing rate to an external system after determining the light passing rate of the LCD panel according to the external illumination intensity, so that the external system performs a corresponding transmittance control process according to the light passing rate.
In a possible embodiment, the illumination intensity processing module 102 is specifically configured to:
and the control module determines the light passing rate of the LCD liquid crystal panel according to the acquired external illumination intensity and the set light passing strategy.
In a possible embodiment, the illumination intensity processing module 102 is specifically configured to:
and if the detected external illumination intensity is greater than the set threshold value, determining a first light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity so as to reduce the transmittance.
In a possible embodiment, the illumination intensity processing module 102 is specifically configured to:
and if the external illumination intensity is not greater than the set threshold value, determining a second light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity to increase the transmittance.
In one possible embodiment, the filter of the camera is designed as a double-pass cut-off filter, the first channel is visible light spectrum, and the corresponding passing wavelength is 400nm to 700nm, and the second channel is near infrared spectrum, and the corresponding passing wavelength is 820 nm, 850 nm, 890 nm, 920 nm and/or 940 nm.
In a possible embodiment, the adjustment control module 103 is specifically configured to:
and if the second light passing rate is greater than a first set threshold value, carrying out white balance processing on the image collected by the image sensor so as to reduce image redness.
In a possible embodiment, the adjustment parameter determining module 102 is specifically configured to:
and determining the adjusting voltage or the adjusting current corresponding to the light passing rate according to the set transmittance voltage or transmittance current contrast curve.
In one possible embodiment, the transmittance voltage control curve or the transmittance current control curve records transmittance of different orders and voltage values or current values corresponding to the transmittance of different orders.
Fig. 18 is a schematic structural diagram of an image generating apparatus based on an LCD liquid crystal panel according to an embodiment of the present invention, as shown in fig. 18, the apparatus includes a processor 201, a memory 202, an input device 203 and an output device 204; the number of the processors 201 in the device may be one or more, and one processor 201 is taken as an example in fig. 18; the processor 201, the memory 202, the input device 203 and the output device 204 in the apparatus may be connected by a bus or other means, and the connection by the bus is exemplified in fig. 18. The memory 202, which is a computer-readable storage medium, may be used to store software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the image generation method based on the LCD liquid crystal panel in the embodiment of the present invention. The processor 201 executes various functional applications of the device and data processing, i.e., implements the above-described LCD liquid crystal panel-based image generation method, by running software programs, instructions, and modules stored in the memory 202. The input device 203 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function controls of the apparatus. The output device 204 may include a display device such as a display screen.
Embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method of image generation based on an LCD liquid crystal panel, the method comprising:
obtaining external illumination intensity, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity;
determining corresponding adjusting voltage or adjusting current according to the light passing rate;
and controlling the voltage or the current of the LCD liquid crystal panel to be the regulated voltage or the regulated current so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image.
From the above description of the embodiments, it is obvious for those skilled in the art that the embodiments of the present invention can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better implementation in many cases. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions to make a computer device (which may be a personal computer, a service, or a network device) perform the methods described in the embodiments of the present invention.
It should be noted that, in the embodiment of the image generating apparatus based on the LCD panel, the units and modules included in the image generating apparatus are only divided according to the functional logic, but are not limited to the above division as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the embodiment of the invention.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will appreciate that the embodiments of the present invention are not limited to the specific embodiments described herein, and that various obvious changes, adaptations, and substitutions are possible, without departing from the scope of the embodiments of the present invention. Therefore, although the embodiments of the present invention have been described in more detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and many other equivalent embodiments may be included without departing from the concept of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.
Claims (15)
1. An image generation method based on an LCD liquid crystal panel, comprising a camera and the LCD liquid crystal panel associated with the camera, characterized in that the LCD liquid crystal panel is arranged between a lens of the camera and an image sensor or the lens of the camera is arranged between the LCD liquid crystal panel and the image sensor, the image display method comprises:
obtaining external illumination intensity, and determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity;
determining corresponding adjusting voltage or adjusting current according to the light passing rate;
and controlling the voltage or the current of the LCD liquid crystal panel to be the regulated voltage or the regulated current so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image.
2. The method of claim 1, wherein the obtaining the external illumination intensity comprises:
and obtaining the external illumination intensity through the arranged external photosensitive module.
3. The method of claim 1, wherein the obtaining the external illumination intensity comprises:
the external illumination intensity is determined by image parameters detected by the image sensor, the image parameters including one or more of a white balance parameter, an image exposure value, and a transmittance of an LCD liquid crystal panel.
4. The image generation method based on the LCD liquid crystal panel according to claim 1, further comprising, after determining the light passing rate of the LCD liquid crystal panel according to the external illumination intensity:
and sending the light passing rate to an external system so that the external system can execute corresponding transmittance control processing according to the light passing rate.
5. The method of any of claims 1-4, wherein determining the light transmittance of the LCD panel based on the external illumination intensity comprises:
and the control module determines the light passing rate of the LCD liquid crystal panel according to the acquired external illumination intensity and the set light passing strategy.
6. The method of claim 5, wherein the control module determines the light passing rate of the LCD panel according to the obtained external illumination intensity and the set light passing strategy, comprising:
and if the detected external illumination intensity is greater than the set threshold value, determining a first light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity so as to reduce the transmittance.
7. The method of claim 6, wherein the control module determines the light passing rate of the LCD panel according to the obtained external illumination intensity and the set light passing strategy, comprising:
and if the external illumination intensity is not greater than the set threshold value, determining a second light passing rate corresponding to the LCD liquid crystal panel according to the external illumination intensity to increase the transmittance.
8. The method as claimed in claim 7, wherein the filter of the camera is designed as a double pass cut-off filter, the first channel is visible spectrum, and the second channel is near infrared spectrum.
9. The method of claim 8, wherein if the second light passing rate is greater than a first threshold, performing white balance processing on the image captured by the image sensor to reduce image redness.
10. The method of claim 1, wherein the determining the light throughput rate further comprises:
and determining the corresponding light passing rate according to the received setting instruction set by the user.
11. The method of claim 1, wherein determining the corresponding conditioning voltage or current based on the light throughput rate comprises:
and determining the adjusting voltage or the adjusting current corresponding to the light passing rate according to the set transmittance voltage or transmittance current contrast curve.
12. The image generation method based on the LCD-LCD panel as claimed in claim 11, wherein the transmittance voltage contrast curve or transmittance current contrast curve records transmittance of different orders and voltage or current values corresponding to the transmittance of the order.
13. An image generating apparatus based on an LCD liquid crystal panel, comprising a camera and an LCD liquid crystal panel associated with the camera, comprising:
the illumination intensity processing module is used for acquiring external illumination intensity and determining the light passing rate of the LCD panel according to the external illumination intensity;
the adjusting parameter determining module is used for determining corresponding adjusting voltage or adjusting current according to the light passing rate;
and the adjusting control module is used for controlling the voltage or the current of the LCD liquid crystal panel to be the adjusting voltage or the adjusting current so that the LCD liquid crystal panel processes the passing light and then induces the passing light through the image sensor to generate an image.
14. An image generation apparatus based on an LCD liquid crystal panel, the apparatus comprising: one or more processors; storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the method of generating an image based on an LCD liquid crystal panel as claimed in any one of claims 1 to 12.
15. A storage medium containing computer executable instructions for performing the method of image generation based on LCD liquid crystal panels as claimed in any one of claims 1 to 12 when executed by a computer processor.
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| PCT/CN2022/096756 WO2022253296A1 (en) | 2021-06-04 | 2022-06-02 | Image generation method, apparatus and device based on lcd panel, and storage medium |
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