WO2022253299A1

WO2022253299A1 - Image generation method, apparatus and device based on lcd apparatus, and storage medium

Info

Publication number: WO2022253299A1
Application number: PCT/CN2022/096769
Authority: WO
Inventors: 简伟明; 皮爱平; 黄飞鹰; 梁华贵; 陈吉宏; 黄伟涛; 郑则润; 陈秋榕
Original assignee: 简伟明
Priority date: 2021-06-04
Filing date: 2022-06-02
Publication date: 2022-12-08
Also published as: CN113364982A

Abstract

Disclosed in the embodiments of the present invention are an image generation method, apparatus and device based on an LCD apparatus, and a storage medium. A focusing lens and an LCD apparatus associated with the focusing lens are comprised, wherein the LCD apparatus is arranged between the focusing lens and an image sensor, or the focusing lens is arranged between the LCD apparatus and the image sensor. The method comprises: determining the current image display mode and the current focusing mode, wherein the image display mode comprises a visible light mode and a near infrared mode, and the focusing mode comprises automatic focusing, semi-automatic focusing, and external control focusing; and according to the image display mode, controlling a power-on voltage or current of an LCD apparatus, such that the light passing through the LCD apparatus and a focusing lens is sensed by an image sensor, so as to generate an image. The image generation method and mode switching provided in the present solution are not affected by the work of a voice coil motor, etc., to generate an error; in addition, no magnetic field is generated to affect the work of means such as the voice coil motor, and ultra-miniaturization can be realized.

Description

Image generation method, device, device and storage medium based on LCD liquid crystal device

technical field

The embodiments of the present application relate to the image field, and in particular to an image generation method, device, device and storage medium based on an LCD liquid crystal device.

Background technique

Autofocus and spectral switching are currently one of the most widely used optical technologies. Usually, autofocus uses technologies such as voice coil motors and liquid lenses. Voice coil motors control the position of the lens through magnetic induction coils, while liquid lenses use magnetic induction coils to Control the curved surface of the lens to achieve the focusing function; the usual spectrum switching technology uses physical principles, using a motor to drive two physical lenses with different spectra, and by changing the position of the physical lenses of different spectra to achieve filtering of different spectra and spectrum switching Function.

Since the autofocus and spectrum switching devices both use magnetic induction technology, if they are forcibly integrated, they will interfere with each other, and the related devices cannot be precisely controlled, and the design purpose cannot be achieved. On the other hand, the larger the lens, the greater the weight, which affects the accuracy and flexibility of the voice coil motor; while the smaller the lens, although the weight is lighter, the accuracy and flexibility of the voice coil motor are satisfied, but what follows is The back focal length is getting smaller and smaller, so that the distance between the lens and the image sensor is getting smaller and smaller, often less than 1 mm, and it is impossible to place two physical lenses and transmission structures with different spectra that are mechanically driven. Ultra-thin devices such as mobile phones and monitors are changing with each passing day. In such a narrow space, it is impossible to mechanically push two physical lenses with different spectra. It is easy to scratch the lens lens or image sensor, and it is impossible to achieve ultra-thin and miniaturized equipment.

Intelligent machine vision technologies such as robots, intelligent driving, face recognition, and intelligent monitoring continue to develop and popularize. These technologies are all based on image imaging technology, so they are particularly dependent on cameras. Various lighting conditions will seriously affect the normal operation of the device, especially in various outdoor lighting environments. The current camera technology has been unable to meet its actual needs.

Contents of the invention

Embodiments of the present invention provide an image generation method, device, device, and storage medium based on an LCD liquid crystal device, wherein the LCD liquid crystal device does not require a magnetic field to work, and therefore, on the one hand, it will not be affected by the operation of a voice coil motor or the like. Errors, on the other hand, will not generate a magnetic field that will affect the work of devices such as voice coil motors, and can be ultra-minimized. In addition, the passing rate of light can be dynamically controlled, which can protect the image sensor and prolong its service life; secondly, it can adapt to different light intensities; thirdly, it can work normally in extremely harsh lighting environments.

In the first aspect, an embodiment of the present invention provides an image generation method based on an LCD liquid crystal device, including a focusing lens and an LCD liquid crystal device associated with the focusing lens, and the LCD liquid crystal device is arranged on the focusing lens and the image sensor between, or the focusing lens is arranged between the LCD liquid crystal device and the image sensor, the image generation method includes:

Determine the current image display mode and focus mode, the image display mode includes visible light mode and near-infrared mode, and the focus mode includes automatic focus, semi-automatic focus and external control focus;

The LCD liquid crystal device is controlled according to the image display mode, so that the light passing through the LCD liquid crystal device and the focusing lens is sensed by the image sensor to generate an image.

In the second aspect, the embodiment of the present invention also provides an image generating device based on an LCD liquid crystal device, including a focusing lens and an LCD liquid crystal device associated with the focusing lens, specifically including:

A mode determination module, configured to determine the current image display mode and focus mode, the image display mode includes visible light mode and near-infrared mode, and the focus mode includes automatic focus, semi-automatic focus and external control focus;

A control module, configured to control the focal length of the focus lens according to the focusing mode, and to control the energizing voltage or current of the LCD liquid crystal device according to the image display mode, so that the liquid crystal through the LCD The light from the device and the focusing lens is sensed by the image sensor to generate an image.

In a third aspect, the embodiment of the present invention also provides an image generating device based on an LCD liquid crystal device, the device comprising:

one or more processors;

storage means 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 image generation method based on the LCD liquid crystal device described in the embodiment of the present invention.

In the fourth aspect, the embodiment of the present invention also provides a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute the LCD liquid crystal device-based method according to the embodiment of the present invention when executed by a computer processor. image generation method.

In the embodiment of the present invention, by determining the current image display mode and focus mode, the image display mode includes visible light mode and near-infrared mode, and the focus mode includes auto focus, semi-auto focus and external control focus; according to the image display Mode controls the energizing voltage or current of the LCD liquid crystal device, so that the light passing through the LCD liquid crystal device and the focusing lens is sensed by the image sensor to generate an image. The image generation method and mode switching provided by this solution will not generate errors due to the influence of voice coil motors, etc. On the other hand, it will not generate magnetic fields that will adversely affect the work of devices such as voice coil motors, and can achieve ultra-minimization; and It can control the different light transmission rates of the specified wafers, and can realize the functions of controlling the overall light brightness and partial occlusion for various lighting modes such as direct sunlight, high beam, and backlight, so that the image generation device can adapt to various lighting environments.

Description of drawings

1 is a flow chart of an image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

Figure 1a is a schematic schematic diagram of an exemplary liquid crystal screen;

Fig. 1b is an exemplary effect diagram of flipping liquid crystal molecules;

Fig. 1c is a schematic diagram of an exemplary liquid crystal polarization characteristic;

Figure 1d is a schematic diagram of the positional relationship between an LCD liquid crystal device, a focusing lens, and an image sensor provided by an embodiment of this solution;

Figure 1e is a schematic diagram of the positional relationship between another LCD liquid crystal device, focusing lens and image sensor provided by the embodiment of this solution;

FIG. 1f is a schematic diagram of another exemplary LCD screen principle;

FIG. 1g is a schematic diagram of another exemplary liquid crystal screen principle;

2 is a flow chart of an image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

3 is a flowchart of an image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

4 is a flow chart of an image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

Figure 4a is a schematic diagram of an exemplary transmittance voltage control curve;

5 is a flow chart of an image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

Fig. 5 a is the schematic diagram of a kind of LCD multi-crystal panel provided by the present invention;

FIG. 6 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

FIG. 7 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

FIG. 8 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of ambient light in a scene provided by an embodiment of the present invention;

FIG. 10 is a schematic diagram of controlling the light transmission rate of the scene shown in FIG. 9 to 50% according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of the distribution of each crystal element of the LCD multi-crystalline element device provided by the embodiment of the present invention and the control of the light transmission rate of each crystal element in FIG. 9;

FIG. 12 is a schematic diagram of the effect of the captured image in FIG. 11 provided by the embodiment of the present invention;

FIG. 13 is a schematic diagram of the light transmission rate of each crystal element in the sun-shielding area of FIG. 11 provided by the embodiment of the present invention;

FIG. 14 is a structural block diagram of an image generating device based on an LCD liquid crystal device provided by an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of an image generating device based on an LCD liquid crystal device provided by an embodiment of the present invention.

Detailed ways

The embodiments of the present invention will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the embodiments of the present invention.

Figure 1 is a flow chart of an image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention. This embodiment is applicable to generating visible light images and near-infrared images. This method can be used by image generation devices such as mobile phones, smart cameras, etc. To implement, specifically include the following steps:

Step S101. Determine the current image display mode and focus mode. The image display mode includes visible light mode and near-infrared mode. The focus mode includes auto focus, semi-auto focus and external control focus.

Wherein, the image display mode includes a visible light mode and a near-infrared mode. In the traditional IR-CUT function, it includes optical filters and corresponding transmission devices (mechanical structural components). There are two filters, one is a visible light cut filter for daytime, and the other is a near infrared cut filter for night. The two filters are controlled by the IR-CUT motor, the visible light cut filter is used during the day, the image is not color cast, and the near infrared cut filter is used at night to increase the sensitivity. The visible light mode can be understood as an image mode taken by filtering out infrared light and ultraviolet light and retaining visible light; the near-infrared mode can be understood as an image mode taken by filtering out all light and retaining a specific band of near-infrared light.

Wherein, the determination of the current image display mode may be determined according to the detected mode selection instruction, or determined according to the current scene where the camera is located, for example, the visible light mode is adopted during the day, and the near-infrared mode is adopted at night. Another example is that the current image display mode can be determined according to different camera functions. For example, in the process of video recording, the camera gun switches between using the visible light mode during the day and the near-infrared mode at night to obtain corresponding video images to ensure The image is clear and checkable.

Exemplarily, the control module can control the output of 1024-level current, and the voice coil motor is affected by the magnitude of the current to make the lens reach a corresponding position, thereby realizing the focusing function. Wherein, for the determination of the focusing mode and the corresponding control description, refer to the embodiments shown in FIGS. 6-8 .

Step S103 , controlling the LCD liquid crystal device according to the image display mode, so that the light passing through the LCD liquid crystal device and the focusing lens is sensed by the image sensor to generate an image.

In this solution, the switching between the visible light mode and the near-infrared mode is respectively realized by controlling the LCD liquid crystal device. Specifically, for the LCD liquid crystal device, different adjustment voltages can be used to control the liquid crystal to change the light transmission rate, so as to realize different display modes. Among them, the camera of this solution adopts a double-pass cut-off filter to allow visible light (such as 400nm-700nm) and near-infrared light of a specific wavelength (such as 800nm, 820nm, 850nm, 920nm and/or 940nm) to pass through. The light sheet can be set separately in the focusing lens or integrated in the liquid crystal device.

Since the control of the focusing lens and the LCD liquid crystal device are relatively independent, the control of the focusing lens and the control module of the LCD liquid crystal device can be two independent discrete modules, or can be integrated into the same independent module.

Now briefly introduce the principle of adjusting the LCD liquid crystal device through voltage in this scheme:

As shown in FIG. 1a, FIG. 1a is a schematic schematic diagram of an exemplary liquid crystal screen. The LCD liquid crystal screen takes TN-type liquid crystal as an example. The TN-type liquid crystal is connected in series along the direction of the long axis, and the long axes are arranged parallel to each other. When contacting the surface of the groove, the liquid crystal molecules will be arranged in the groove along the direction of the groove. When the liquid crystal is contained in the middle of two groove-shaped surfaces, and the direction of the grooves is perpendicular to each other, the arrangement of the liquid crystal molecules is: the upper surface molecules: along the a direction; the lower surface molecules: along the b direction; between the upper and lower surfaces Molecule: produces the effect of rotation. Therefore, the liquid crystal molecules rotate 90 degrees between the two groove-shaped surfaces. The deflection effect diagram is shown in FIG. 1 b , which is an exemplary flipping effect diagram of liquid crystal molecules. Among them, the liquid crystal is evenly distributed under the action of voltage, that is, when a voltage is applied between the upper and lower surfaces, the liquid crystal molecules will be arranged along the direction of the electric field, forming a phenomenon of vertical arrangement. At this time, the incident light is not affected by the liquid crystal molecules, and straightly shoots out of the lower surface.

Fig. 1c is a schematic diagram of an exemplary polarization characteristic of liquid crystal. LCD liquid crystal panels have the characteristics of polarizers. As shown in Figure 1c (above), non-polarized light (ordinary light) is filtered into polarized light. When non-polarized light passes through the polarizer in a direction, the light is filtered into a Parallel linearly polarized light, the linearly polarized light continues to advance, and when it passes through the second polarizer, the light passes through; as shown in Figure 1c (below), the linearly polarized light continues to advance, and when it passes through the second sheet, the light is completely blocked. In the specific control process of light transmission, when the upper and lower polarizers are perpendicular to each other, that is, the angle is 90 degrees, if no voltage is applied, the light can pass through, and when the voltage is applied, the light will be blocked accordingly. After a voltage is applied to the LCD liquid crystal panel, the current passes through the transistor to generate an electric field change, causing the liquid crystal molecules to deflect, thereby changing the polarity of the light, and then blocking/passing the passing light through the set polarizer to achieve different light and dark state.

The relationship between the focusing lens, LCD liquid crystal device and image sensor in this solution is shown in Figure 1d and Figure 1e, and Figure 1d is a schematic diagram of the positional relationship between an LCD liquid crystal device, a focusing lens and an image sensor provided by an embodiment of this solution; 1e is a schematic diagram of the positional relationship between another LCD liquid crystal device, a focusing lens and an image sensor provided by the embodiment of this solution. It does not use traditional mechanical control methods for switching between visible light and near-infrared modes. LCD liquid crystal devices do not require magnetic fields to work. Therefore, on the one hand, there will be no errors caused by the influence of voice coil motors, and on the other hand, no magnetic fields will be generated. In turn, it affects the work of devices such as voice coil motors, and can achieve ultra-miniaturization.

Fig. 1f is a schematic diagram of another exemplary liquid crystal screen. Fig. 1g is a schematic diagram of another exemplary liquid crystal display. Wherein, the biggest difference from that shown in Fig. 1a is that no polarizer is required, and the inner wall of the liquid crystal container is not provided with a groove-shaped surface. When there is no electricity, as shown in Figure 1f, because there is no traction on the groove-shaped surface of the inner wall, the liquid crystal molecules contained in it are in a state of disordered arrangement, and the light cannot pass through the glass film, and the state seen at this time is white and non-transparent state. Under the condition of electrification, as shown in Figure 1g, the internal liquid crystal molecules are arranged in an orderly manner, and the light can pass through the glass film smoothly, and the state seen at this time is the transparent state.

FIG. 2 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention, which shows a processing method in which the image generation mode is near-infrared mode. As shown in Figure 2, the specific process is as follows:

Step S201, controlling the focal length of the focusing lens according to the focusing mode through the control module.

Exemplarily, the control module can control the output of 1024-level current, and the voice coil motor is affected by the magnitude of the current to make the lens reach a corresponding position, thereby realizing the focusing function.

Step S202. Determine the current image display mode, where the image display mode includes a visible light mode and a near-infrared mode.

Step S203, when the current image display mode is the near-infrared mode, based on the angle of the polarizer of the LCD liquid crystal device, control the LCD liquid crystal device through the control module, so that the light transmission rate of the LCD liquid crystal device satisfies near Infrared mode parameters.

In one embodiment, when the image display mode is the near-infrared mode, the near-infrared light is allowed to pass through. At this time, based on the angle of the polarizer of the LCD liquid crystal device, the control module controls the LCD liquid crystal device so that the light transmission rate of the LCD liquid crystal device satisfies the near-infrared mode parameters. Specifically, the initial angles of the front and rear polarizers of the LCD liquid crystal device are different in different initial states. Take the initial angle of 90° as an example, which allows all visible light to pass through. At this time, changing the liquid crystal of the LCD liquid crystal device by controlling the voltage reduces the light passing rate, even if visible light cannot pass through, only near-infrared light is used to achieve near-infrared mode. If the initial angle is 0°, visible light is not allowed to pass through, and the corresponding near-infrared mode can be directly determined without voltage adjustment.

It can be seen from the above solution that by determining the current image display mode, the image display mode includes visible light mode and near-infrared mode, and the power-on voltage of the LCD liquid crystal device is controlled according to the image display mode, so that the liquid crystal through the LCD The light from the device and the focusing lens is sensed by the image sensor to generate an image. The image generation method and mode switching provided by this solution will not produce errors due to the influence of voice coil motors, etc. On the other hand, it will not generate magnetic fields that will adversely affect the operation of voice coil motors and other devices, and can achieve ultra-minimization. In addition, the initial mode setting can be flexibly set by selecting the corresponding voltage through the angle of the polarizer of the specific LCD liquid crystal device, that is, after the initial angle of the polarizer can be set freely, the corresponding voltage can be determined in the near-infrared mode. Voltage can realize mode switching.

FIG. 3 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention, showing a processing method in which the image generation mode is near-infrared mode. As shown in Figure 3, the specific process is as follows:

Step S301, controlling the focal length of the focusing lens through the control module according to the focusing mode.

Step S302. Determine the current image display mode, where the image display mode includes a visible light mode and a near-infrared mode.

Step S303 , when the current image display mode is the visible light mode, determine a corresponding light passing strategy in the visible light mode, and control the LCD liquid crystal device according to the light passing strategy.

In one embodiment, different ray passing strategies correspond to different scenes. Specifically, the corresponding light passing strategy is determined according to the scene under the current image display. The scene may be a specific scene determined by identifying or previewing a currently captured image. Exemplarily, if it is recognized that there is a strong light area in the preview image, the corresponding image generation scene is a strong light scene, and the corresponding illumination adjustment strategy is a strong light occlusion strategy; if it is recognized that there is a backlight in the preview image, then the corresponding The image generation scene is a backlight scene, and the corresponding illumination adjustment strategy is the backlight photography strategy. The determination of the scene may also be based on the detected external ambient light intensity, for example, when the ambient light intensity is greater than a set light intensity threshold, it is determined that the corresponding scene is a strong light scene.

In one embodiment, the light pass strategy includes full pass visible light. Correspondingly, the controlling the energizing voltage of the LCD liquid crystal device according to the light passing strategy includes: if the light passing strategy is all visible light, controlling the energizing voltage of the LCD liquid crystal device through a control module, The light transmission rate of the LCD liquid crystal device satisfies the visible light all-pass parameter. Among them, visible light all-through means that the light transmission rate of visible light is not controlled, so that all of it passes through the LCD liquid crystal device and is sensed by the image sensor. At this time, the LCD liquid crystal device does not need to be powered on, that is, the power-on voltage is controlled to be 0.

It can be seen from the above solution that by determining the current image display mode, the image display mode includes visible light mode and near-infrared mode, and the power-on voltage of the LCD liquid crystal device is controlled according to the image display mode, so that the liquid crystal through the LCD The light from the device and the focusing lens is sensed by the image sensor to generate an image. The image generation method and mode switching provided by this solution will not produce errors due to the influence of voice coil motors, etc. On the other hand, it will not generate magnetic fields that will adversely affect the operation of voice coil motors and other devices, and can achieve ultra-minimization. In addition, for the processing of conventional visible light, the image mode of visible light can be realized without voltage regulation.

Fig. 4 is a flowchart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention. For the case where the LCD liquid crystal device is an LCD liquid crystal panel, an image generation method in which the light passing strategy is a visible light adjustment strategy is given . As shown in Figure 4, the specific process is as follows:

Step S401, controlling the focal length of the focusing lens through the control module according to the focusing mode.

Step S402. Determine the current image display mode, where the image display mode includes a visible light mode and a near-infrared mode.

Step S403, when the current image display mode is the visible light mode, determine a corresponding light passing strategy in the visible light mode.

Step S404, if the light passing strategy is the visible light adjustment strategy, acquire the external light intensity through the set external photosensitive module, or determine the external light intensity through the image parameters detected by the image sensor.

Wherein, the external light intensity is the ambient light intensity of the environment where the camera is currently located, such as indoor environment, outdoor environment, daytime environment, nighttime environment, live face recognition environment, and the like. The LCD liquid crystal device in this solution is an LCD liquid crystal panel. Specifically, in one embodiment, it may be: collect the external light intensity through an external photosensitive module provided. Exemplarily, the photosensitive module may be an illuminance sensor, which is a sensor that converts illuminance into an electrical signal, and the unit of output value is Lux. The external light intensity in the current environment is determined by light sensing through the set light sensor. In another embodiment, the external light intensity is determined according to the image parameters detected by the image sensor. Specifically, for example, the external light intensity is determined according to the average brightness value of the currently generated image frame. Exemplarily, the average brightness value of the image frame can be determined by means of average photometry, central point photometry, multi-point photometry, center-weighted photometry, partial photometry, or partitioned photometry, and then according to the brightness of the image frame The mean value determines the corresponding external light intensity. Specifically, a comparison table of the external light intensity and the average brightness value of the image frame may be recorded, and the obtained external light intensity corresponding to the average brightness value of the image frame may be determined according to the comparison table.

Step S405. Determine the light transmission rate corresponding to the LCD liquid crystal panel according to the intensity of the external light.

Among them, the light transmission rate is used to represent the degree of light passing through, and for LCD liquid crystal panels, it represents the degree of transparency. In the process of image generation, light passes through the camera lens and LCD liquid crystal panel and then irradiates the image sensor to generate image signals. Signal processing is then performed by a corresponding image signal processing device/program to generate an image.

In one embodiment, the intensity of external light is acquired, and the light transmission rate of the LCD liquid crystal panel is determined according to the intensity of external light. Wherein, different external light intensities correspond to different light transmission rates of the LCD liquid crystal panel. Exemplarily, after the focusing camera starts to operate, acquire the intensity of external light to determine the light passing rate of the corresponding LCD liquid crystal panel; it may also be to acquire the intensity of external light when it is detected that the camera function is turned on, To determine the light passing rate of the corresponding LCD liquid crystal panel.

Step S406 , determining a corresponding adjustment voltage according to the determined light transmission rate, and controlling the power-on voltage of the LCD liquid crystal device to be the adjustment voltage.

Wherein, the regulating voltage is used to regulate and control the energizing voltage of the LCD liquid crystal panel. Different light transmission rates correspond to different regulation voltages. By adjusting the voltage control, the LCD liquid crystal panel can block the light to different degrees. Different adjustment voltages are applied to the LCD liquid crystal panel to control the passing rate of light to realize the change of the light and dark state of the image. In one embodiment, after the light passing rate is determined according to the intensity of external light, the adjustment voltage corresponding to the light passing rate is correspondingly determined. It includes: determining the adjustment voltage corresponding to the light transmission rate adjusted by the visible light according to the curve relationship between the pre-calculated light transmission rate and the corresponding adjustment voltage. It is also possible to generate a transmittance voltage comparison table of preset orders according to the curve relationship between the pre-calculated light transmission rate and the corresponding adjustment voltage, and determine the light transmission rate of the visible light adjustment according to the light transmittance voltage comparison table. Corresponding adjustment voltage.

In one embodiment, the adjustment voltage corresponding to the light transmission rate is determined according to the set transmittance voltage comparison curve, as shown in FIG. 4 a , which is a schematic diagram of an exemplary transmittance voltage comparison curve. The abscissa is the voltage value, and the ordinate is the corresponding light transmission rate. By querying the curve, the required adjustment voltage corresponding to the light passing rate can be obtained.

Among them, after the adjustment voltage corresponding to the light transmission rate is determined, the corresponding adjustment voltage is applied to the LCD liquid crystal panel to control the light transmission rate, and the signal is generated through the image sensor, and then the signal is processed by the control module or the CPU. Generate the final image. In one embodiment, in order to ensure a good image imaging effect, when the external light intensity is too strong, partial light shielding is performed by the LCD liquid crystal panel; when the external light intensity is weakened, the LCD liquid crystal panel is used to reduce the light shielding accordingly to improve image quality.

It can be seen from the above solution that by determining the current image display mode, the image display mode includes visible light mode and near-infrared mode, and the power-on voltage of the LCD liquid crystal device is controlled according to the image display mode, so that the liquid crystal through the LCD The light from the device and the focusing lens is sensed by the image sensor to generate an image. The image generation method and mode switching provided by this solution will not produce errors due to the influence of voice coil motors, etc. On the other hand, it will not generate magnetic fields that will adversely affect the operation of voice coil motors and other devices, and can achieve ultra-minimization. In addition, when the display mode is visible light mode, the brightness of visible light can be dynamically adjusted by controlling the voltage of the LCD liquid crystal panel, which optimizes the imaging mechanism of the camera and expands the functions of the camera.

Fig. 5 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention. For the case where the LCD liquid crystal device is an LCD multi-crystal panel, an image in which the light passing strategy is a visible light adjustment strategy is given generate method. As shown in Figure 5, the specific process is as follows:

Step S501, controlling the focal length of the focusing lens through the control module according to the focusing mode.

Step S502. Determine the current image display mode, where the image display mode includes a visible light mode and a near-infrared mode.

Step S503, when the current image display mode is the visible light mode, determine the corresponding light passing strategy in the visible light mode.

Step S504, if the light passing strategy is the visible light adjustment strategy, determine the visible light adjusted light passing rate of the corresponding area of the LCD multi-chip panel.

In one embodiment, the LCD liquid crystal device is an LCD multi-cell panel. Among them, the LCD multi-crystal cell board includes a plurality of pixel control units, as shown in Figure 5a, which is a schematic diagram of an LCD multi-crystal cell board provided by the present invention, wherein each grid can be independently controlled by a control signal. Light and dark light transmission control, that is, reduce the brightness of the high brightness squares in the vicinity of the shooting target.

In one embodiment, the method of adjusting visible light through the LCD multi-element panel includes: determining the strong light area in the current shooting picture, and reducing the light passing rate of the strong light area through the LCD multi-element panel, so that the adjustment The final light is sensed by the image sensor to generate an image. Specifically, for the strong light area in the shooting picture, the light passing rate thereof is adjusted through the LCD multi-crystal element board. In one embodiment, taking a photo taken by a mobile phone as an example, the method of determining the strong light area includes: displaying a preview screen of a pair of captured images on the device interface, and determining it as a strong light area according to the detected click position of the user; Through the integrated image algorithm, the current captured image is recognized to calculate the corresponding strong light area. Specifically, the average brightness of the image frame in each area may be determined by means of partial photometry or partitioned photometry, and when the average brightness of a certain area is significantly greater than that of other areas, this area is determined as a strong light area. Correspondingly, by controlling the strong light area corresponding to the LCD multi-chip panel, the light passing rate in this area is reduced, and finally an image with uniform brightness that does not include the strong light area is formed.

In another embodiment, the method of adjusting visible light through the LCD multi-chip panel includes: determining the shooting target in the current shooting picture, determining the strong light area corresponding to the shooting target, and reducing the visible light through the LCD multi-chip panel. The light passing rate of the above-mentioned strong light area makes the adjusted light pass through the sensing of the image sensor to generate an image. Specifically, taking backlight photographing adjustment as an example, the photographing target in the current photographing frame is determined. Wherein, the photographing target may be a human body, a human face or other targets. Specifically, the method of first determining the shooting target may be: the image signal processing unit determines the image area of interest in the current shooting frame according to the detected control instruction; and determines the shooting target in the image area of interest. It is also possible to recognize the image to directly determine the shooting target. After determining the shooting target, determine the strong light area associated with the shooting target. Exemplarily, the outline of the shooting target can be used as the identification basis to determine whether there is a strong light area in the outline area, or the light intensity can be determined based on the location area where the shooting target is located to determine the strong light area in the shooting target . Correspondingly, after the strong light area is determined, the LCD multi-chip panel reduces the light passing rate of the strong light area, so that the adjusted light is sensed by the image sensor to generate a clear image without backlight.

Step S505 , determine the adjustment voltage corresponding to the wafer according to the light transmission rate, and control the voltage of the wafer to be the corresponding adjustment voltage.

It can be seen from the above solution that by determining the current image display mode, the image display mode includes visible light mode and near-infrared mode, and the power-on voltage of the LCD liquid crystal device is controlled according to the image display mode, so that the liquid crystal through the LCD The light from the device and the focusing lens is sensed by the image sensor to generate an image. The image generation method and mode switching provided by this solution will not produce errors due to the influence of voice coil motors, etc. On the other hand, it will not generate magnetic fields that will adversely affect the operation of voice coil motors and other devices, and can achieve ultra-minimization. In addition, when the display mode is the visible light mode, by controlling the different light transmission rates of the specified wafers, it is possible to control the overall light brightness and partial shading for various lighting modes such as direct sunlight, high beam, and backlight. The problem of strong light and backlight in the area is well solved, the image generation device can adapt to various lighting environments, the imaging mechanism of the camera is optimized, and the functions of the camera are expanded.

FIG. 6 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention. For the case where the focus mode is an automatic mode, an image generation method controlled by a focus motor is given. As shown in Figure 6, the specific process is as follows:

Step S601, determine the current focus mode, the focus mode includes automatic mode, semi-automatic mode and external setting mode.

Step S602, if the current focusing mode is the automatic mode, determine the focus area, and determine the target focal length through the current image sensor image.

The control module detects the control information sent by the external system, determines that the current focus mode is the auto focus mode, the control module determines the target focal length according to the current graphic information, and controls the focus lens to move to the target focal length; returns the current focal length message to external system.

Exemplarily, the control module can control the output of 1024-level current, and the voice coil motor is affected by the magnitude of the current to make the lens reach a corresponding position, thereby realizing the focusing function. When the focusing mode is the automatic mode, the control module reads the image currently obtained by the sensor, and determines the current focal length according to the image definition.

Step S603, returning the current focal length to the external system.

Step S604, the control module controls the focal length of the focusing lens according to the target focal length.

It can be seen from the above solution that by determining the current focus mode, the current focal length is determined according to the image, and returned to the external system, and controlled by the power-on voltage of the LCD liquid crystal device, so that through the LCD liquid crystal device and the The light from the focusing lens is sensed by the image sensor to generate an image. Let the camera better adapt to the distance of the scene, so that the captured pictures are clearer. In addition, the external system can estimate the actual size of the object distance according to the returned current focal length, so that the external system can respond accordingly.

FIG. 7 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention. For the case where the focus mode is a semi-automatic mode, an image generation method controlled by a focus motor is given. As shown in Figure 7, the specific process is as follows:

Step S701, determine the current focus mode, the focus mode includes automatic mode, semi-automatic mode and external setting mode.

Step S702, if the current focusing mode is a semi-automatic mode, determine the target focal length, maximum focal length and minimum focal length, and control the focusing lens to move to the target focal length.

The control module detects the control information sent by the external system, determines that the current focus mode is a semi-automatic focus mode, and determines the target focal length, maximum focal length and minimum focal length; wherein, the target focal length is the current target focal length, and the target focal length will be determined according to the actual depth of field change; determine the target focal length according to the current graphic information, and control the focusing lens to move to the target focal length; the maximum focal length and the minimum focal length limit the variable range of the focal length.

Exemplarily, the control module can control the output of 1024-level current, and the voice coil motor is affected by the magnitude of the current to make the lens reach a corresponding position, thereby realizing the focusing function. When the focusing mode is the automatic mode, the control module reads the image currently obtained by the sensor, and determines the current focal length according to the image definition. When it is determined that the shooting target is a QR code, since the shooting distance of the QR code is usually relatively short, the most moderate distance from the camera is 10 cm, the closest is 5 meters, and the farthest is 20 cm. The control module sends control information, so that the control module controls the lens at a distance of 10 cm from the subject, and dynamically adjusts the current focal length through the current image, but the shortest shooting distance is not less than 5 cm, and the farthest shooting distance is not greater than 20 cm .

Step S703. Determine the target focal length according to the current graphics information, and return the current focal length message to the external system.

Step S704, the control module controls the focal length of the focusing lens according to the target focal length.

It can be seen from the above solution that by determining the current focus mode, the current focal length is determined according to the image, and returned to the external system, and controlled by the power-on voltage of the LCD liquid crystal device, so that through the LCD liquid crystal device and the The light from the focusing lens is sensed by the image sensor to generate an image. Let the camera quickly reach the target focal length, reduce the time loss of the whole search, and optimize the determination of the object distance by limiting the maximum stroke and the minimum stroke. In addition, the external system can estimate the actual size of the object distance according to the returned current focal length, so that the external system can respond accordingly.

FIG. 8 is a flow chart of another image generation method based on an LCD liquid crystal device provided by an embodiment of the present invention. For the case where the focus mode is an external setting mode, an image generation method controlled by a focus motor is given. As shown in Figure 8, the specific process is as follows:

Step S801, determine the current focus mode, the focus mode includes automatic mode, semi-automatic mode and external setting mode.

Step S802, if the current focus mode is external setting, determine the target focal length, and control the focus lens to move to the target focal length.

The control module detects the control information sent by the external system, determines that the current focus mode is the external setting focus mode, and determines the target focal length; controls the focus lens to move to the target focal length.

Exemplarily, the control module can control the output of 1024-level current, and the voice coil motor is affected by the magnitude of the current to make the lens reach the corresponding position, thereby realizing the focusing function.

Step S803. Determine the target focal length according to the current graphic information, and return the current focal length message to the external system.

Step S804, the control module controls the focal length of the focusing lens according to the target focal length.

It can be seen from the above solution that by determining the current focus mode, the current focal length is determined according to the image, and returned to the external system, and controlled by the power-on voltage of the LCD liquid crystal device, so that through the LCD liquid crystal device and the The light from the focusing lens is sensed by the image sensor to generate an image. Let the camera control the target focal length according to the needs of the external system, so that the camera can better cooperate with the operation of the external system.

Figure 9 is a schematic diagram of the ambient light of a scene provided by an embodiment of the present invention, which is an image effect diagram taken by a normal camera under the ambient light of the scene; it can be seen from the figure that the overall light is relatively bright, and the lens in the figure is facing the sun, relatively Glare, and direct sunlight will affect the entire image generation and affect the picture quality.

Fig. 10 is a schematic diagram of controlling the light transmission rate of the scene in Fig. 9 to 50% provided by the embodiment of the present invention. From the image effect, it can be felt that the sunlight is not so glaring, and the whole picture is relatively soft and comfortable, but it does not reduce the impact of sunlight on the scene. The entire picture is imaged in the image.

Fig. 11 is a schematic diagram of the distribution of each crystal element of the LCD multi-crystal element device provided by the embodiment of the present invention and the control of the light transmission rate of each crystal element in Fig. 9. The size of the crystal element is determined by the precision of the LCD liquid crystal process actually used; it can be seen that Properly control the light transmission rate of the strong sun to realize the function of blocking the strong light, and at the same time, you can see the actual image of the blocked sun; you can combine the functions shown in Figure 10 to control the light transmission rate of the entire screen, so as to realize the The control of the light passing rate of each wafer in the whole screen.

Figure 12 is a schematic diagram of the effect of the captured image in Figure 11 provided by the embodiment of the present invention. In the figure, it can be seen that the sunlight is blocked. In order to reflect a more intuitive effect, the light transmission rate in other areas except the blocked area is 100%. It can be seen that the whole picture becomes more soft and comfortable, avoiding the glare of direct sunlight, and reducing the interference of direct sunlight on the imaging effect of the whole picture, making the camera more suitable for working in various lighting environments.

FIG. 13 is a schematic diagram of the light transmission rate of each wafer in the sun-shading area of FIG. 11 provided by the embodiment of the present invention. It can be seen from the figure that the transmission rate of each wafer is different and controllable.

Fig. 14 is a structural block diagram of an image generating device based on an LCD liquid crystal device provided by an embodiment of the present invention, the device is used to execute the image generating method based on an LCD liquid crystal device provided in the above embodiment, and has corresponding functional modules and functions for executing the method. Beneficial effect. As shown in Figure 14, the device specifically includes: a mode determination module 101 and a control module 102, wherein,

A mode determination module 101, configured to determine a current image display mode, the image display mode including a visible light mode and a near-infrared mode;

The control module 102 is configured to control the energizing voltage of the LCD liquid crystal device according to the image display mode, so that the light passing through the LCD liquid crystal device and the focusing lens is sensed by the image sensor to generate an image.

It can be seen from the above solution that by determining the current image display mode, the image display mode includes visible light mode and near-infrared mode; according to the image display mode, the power-on voltage of the LCD liquid crystal device is controlled so that the liquid crystal through the LCD The light from the device and the focusing lens is sensed by the image sensor to generate an image. The image generation method and mode switching provided by this solution will not produce errors due to the influence of voice coil motors, etc. On the other hand, it will not generate magnetic fields that will adversely affect the operation of voice coil motors and other devices, and can achieve ultra-minimization.

In a possible embodiment, the control module 102 includes a near-infrared adjustment unit 1021 and a visible light adjustment unit 1022. When the current image display mode is the near-infrared mode, the near-infrared adjustment unit 1021 is specifically used for:

Based on the angle of the polarizer of the LCD liquid crystal device, the power-on voltage of the LCD liquid crystal device is controlled through the control module, so that the light transmission rate of the LCD liquid crystal device meets the parameters of the near-infrared mode.

In a possible embodiment, when the current image display mode is the visible light mode, the visible light adjustment unit 1022 is specifically configured to:

A corresponding light passing strategy in the visible light mode is determined, and the power-on voltage of the LCD liquid crystal device is controlled according to the light passing strategy.

In a possible embodiment, the light passing strategy includes full pass of visible light, and the visible light adjustment unit 1022:

If the light passing strategy is full pass of visible light, the power supply voltage of the LCD liquid crystal device is controlled through the control module, so that the light pass rate of the LCD liquid crystal device meets the parameter of full pass of visible light.

In a possible embodiment, the light passing strategy includes visible light adjustment, and the visible light adjustment unit 1022 is specifically configured to:

According to the light transmission rate adjusted by the visible light, the corresponding adjustment voltage is determined, and the power-on voltage of the LCD liquid crystal device is controlled to be the adjustment voltage.

In a possible embodiment, the LCD liquid crystal device includes an LCD liquid crystal panel, and the visible light adjustment unit 1022 is specifically used for:

According to the curve relationship between the pre-calculated light transmission rate and the corresponding adjustment voltage, the adjustment voltage corresponding to the visible light adjusted light transmission rate is determined, wherein the light transmission rate is determined according to the detected external ambient light intensity.

In a possible embodiment, the visible light adjustment unit 1022 is specifically used for at least one of the following:

Obtain the external light intensity through the set external photosensitive module;

The external light intensity is determined through the image parameters detected by the image sensor, and the image parameters include one or more of white balance parameters, image exposure values, and light transmittance of the LCD liquid crystal panel.

In a possible embodiment, the control module 102 is also used for:

Before determining the adjustment voltage corresponding to the light transmission rate of the visible light adjustment, according to the curve relationship between the pre-measured light transmission rate and the corresponding adjustment voltage, a preset order of light transmittance voltage comparison table is generated;

The control module 102 is specifically used for:

The adjustment voltage corresponding to the light transmission rate adjusted by the visible light is determined according to the transmittance voltage comparison table.

In a possible embodiment, the LCD liquid crystal device includes an LCD multi-crystal panel, and the visible light adjustment unit 1022 is specifically used for:

Determine the light transmission rate of the visible light adjustment in the corresponding area of the LCD multi-chip panel, and determine the corresponding adjustment voltage.

In a possible embodiment, the visible light adjustment unit 1022 is specifically used for:

Obtain the strong light area in the current shooting frame, and determine the light passing rate of the strong light area.

Determine the shooting target in the current shooting screen;

Determine the light passing rate of the strong light area corresponding to the shooting target.

In a possible embodiment, the control module 102 is specifically configured to:

The adjustment voltage corresponding to the wafer is determined according to the light transmission rate; the voltage of the wafer is controlled to be the corresponding adjustment voltage.

Fig. 15 is a schematic structural diagram of an image generating device based on an LCD liquid crystal device provided by an embodiment of the present invention. As shown in Fig. 15, the device includes a processor 201, a memory 202, an input device 203, and an output device 204; The number of processors 201 can be one or more, and one processor 201 is taken as an example in FIG. Take connection via bus as an example. The memory 202, as a computer-readable storage medium, can 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 device in the embodiment of the present invention. The processor 201 executes various functional applications and data processing of the device by running the software programs, instructions and modules stored in the memory 202, that is, realizes the above-mentioned image generation method based on the LCD liquid crystal device. The input device 203 can be used to receive input numbers or character information, and generate key signal input related to user settings and function control of the device. The output device 204 may include a display device such as a display screen.

An embodiment of the present invention also provides a storage medium containing computer-executable instructions, the computer-executable instructions are used to execute an image generation method based on an LCD liquid crystal device when executed by a computer processor, including a focusing lens and the The LCD liquid crystal device associated with the focus lens, the LCD liquid crystal device is arranged between the focus lens and the image sensor, or the focus lens is arranged between the LCD liquid crystal device and the image sensor, the method includes:

Through the above description of the implementation, those skilled in the art can clearly understand that the embodiment of the present invention can be implemented by means of software and necessary general-purpose hardware, of course, it can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the essence of the technical solution of the embodiment of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), flash memory (FLASH), hard disk or optical disc, etc., including several instructions to make a computer device (which can be personal computer, service, or network equipment, etc.) execute the methods described in the various embodiments of the embodiments of the present invention.

It is worth noting that, in the above-mentioned embodiment of the image generating device based on the LCD liquid crystal device, the units and modules included are only divided according to functional logic, but are not limited to the above-mentioned divisions, as long as the corresponding functions can be realized. Yes; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the embodiments of the present invention.

Note that the above are only preferred embodiments and technical principles used in the embodiments of the present invention. Those skilled in the art will understand that the embodiments of the present invention are not limited to the specific embodiments described here, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the embodiments of the present invention . Therefore, although the embodiments of the present invention have been described in detail through the above embodiments, the embodiments of the present invention are not limited to the above embodiments, and may include more other equivalents without departing from the concept of the embodiments of the present invention. embodiment, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.

Claims

An image generation method based on an LCD liquid crystal device, including a focusing lens and an LCD liquid crystal device associated with the focusing lens, wherein the LCD liquid crystal device is arranged between the focusing lens and an image sensor, or the focusing lens Set between the LCD liquid crystal device and the image sensor, the image generation method includes:

Determine the current image display mode and focus mode, the image display mode includes visible light mode and near-infrared mode, and the focus mode includes automatic focus, semi-automatic focus and external control focus;

The LCD liquid crystal device is controlled according to the image display mode, so that the light passing through the LCD liquid crystal device and the focusing lens is sensed by the image sensor to generate an image.
The image generating method according to claim 1, wherein when the current image display mode is near-infrared mode, the LCD liquid crystal device is controlled by a control module based on the angle of the polarizer of the LCD liquid crystal device, The light transmission rate of the LCD liquid crystal device satisfies the parameters of the near-infrared mode.
The image generating method according to claim 2, characterized by comprising: controlling the focal length of the focusing lens by the control module according to the focusing mode, and returning a current focal length message to an external system.
The image generating method according to claim 1, wherein when the current image display mode is the visible light mode, determine the corresponding light passing strategy in the visible light mode, and perform the LCD liquid crystal device according to the light passing strategy control.
The image generation method according to claim 4, wherein the light passing strategy includes visible light all pass, and the controlling of the LCD liquid crystal device according to the light passing strategy includes:

If the light passing strategy is full pass of visible light, the LCD liquid crystal device is controlled by the control module so that the light pass rate of the LCD liquid crystal device satisfies the parameter of full pass of visible light.
The image generation method according to claim 4, wherein the light passing strategy includes visible light adjustment, and the controlling of the LCD liquid crystal device according to the light passing strategy includes:

According to the light transmission rate adjusted by the visible light, the corresponding adjustment voltage or current is determined, and the energized voltage or current of the LCD liquid crystal device is controlled to be the adjustment voltage or current.
The image generating method according to claim 6, wherein the LCD liquid crystal device includes an LCD liquid crystal panel, and determining the corresponding adjustment voltage or current according to the light transmission rate adjusted by the visible light includes:

According to the pre-calculated relationship between the light transmission rate and the corresponding adjustment voltage or current curve, determine the adjustment voltage or current corresponding to the visible light-adjusted light transmission rate, wherein the light transmission rate is determined according to the detected external ambient light intensity. Sure.
The image generation method according to claim 7, wherein the light transmission rate is determined according to the detected external ambient light intensity, including one or more of the following:

Obtain the external light intensity through the set external photosensitive module;

The external light intensity is determined through the image parameters detected by the image sensor, and the image parameters include one or more of white balance parameters, image exposure values, and light transmittance of the LCD liquid crystal panel.
The image generation method according to claim 7, further comprising: before determining the adjustment voltage or current corresponding to the light transmission rate adjusted by the visible light:

According to the curve relationship between the pre-measured light transmission rate and the corresponding adjusted voltage or current, a preset order of light transmittance voltage or current comparison table is generated;

Correspondingly, the determination of the adjustment voltage or current corresponding to the light transmission rate adjusted by the visible light includes:

The adjustment voltage or current corresponding to the light transmission rate adjusted by the visible light is determined according to the transmittance voltage or current comparison table.
The image generation method according to claim 6, wherein the LCD liquid crystal device comprises an LCD multi-crystal cell panel, and determining the corresponding adjustment voltage or current according to the light transmission rate adjusted by the visible light includes:

Determine the light transmission rate of the visible light adjustment of the LCD multi-crystal element board corresponding to the crystal element, and determine the corresponding adjustment voltage or current.
The image generation method according to claim 10, wherein said determination of the visible light-adjusted light transmission rate of the corresponding region of the LCD multi-chip panel comprises:

Obtain the strong light area in the current shooting frame, and determine the light passing rate of the strong light area.
The image generation method according to claim 10, wherein said determination of the visible light-adjusted light transmission rate of the corresponding region of the LCD multi-chip panel comprises:

Determine the shooting target in the current shooting screen;

Determine the light passing rate of the strong light area corresponding to the shooting target.
The image generation method according to claim 10, wherein said determining the corresponding adjustment voltage or current comprises:

determining the adjustment voltage or current corresponding to the wafer according to the light transmission rate;

The voltage or current of each wafer is controlled to be the corresponding regulated voltage or current.
The image generation method according to claim 3, wherein when the focus mode of the focus lens is auto focus, the control module controls the focal length of the focus lens according to the focus mode, And return the current focal length message to the external system, including:

The control module detects the control information sent by the external system, determines the target focal length according to the current graphic information, and controls the focusing lens to move to the target focal length;

Return current focal length message to external system.
The image generating method according to claim 3, wherein when the focus mode of the focus lens is semi-automatic focus, the focal length of the focus lens is controlled by the control module according to the focus mode, And return the current focal length message to the external system, including:

The control module detects the control information sent by the external system, determines the target focal length, maximum focal length and minimum focal length, and controls the focusing lens to move to the target focal length;

Determine the target focal length according to the current graphics information, and return the current focal length message to the external system.
The image generating method according to claim 3, wherein when the focus mode of the focus lens is externally controlled focus, the focal length of the focus lens is controlled by the control module according to the focus mode , and return the current focal length message to the external system, including:

The control module detects the control information sent by the external system, determines the target focal length, and controls the focusing lens to move to the target focal length.
An image generating device based on an LCD liquid crystal device, including a focusing lens and an LCD liquid crystal device associated with the focusing lens, is characterized in that it includes:

A mode determination module, configured to determine the current image display mode and focus mode, the image display mode includes visible light mode and near-infrared mode, and the focus mode includes automatic focus, semi-automatic focus and external control focus;

A control module, configured to control the focal length of the focusing lens according to the focusing mode, and to control the energizing voltage or current of the LCD liquid crystal device according to the image display mode, so that the LCD liquid crystal device passes through the and the light from the focusing lens is sensed by the image sensor to generate an image.
An image generating device based on an LCD liquid crystal device, the device comprising: one or more processors; a storage device for storing one or more programs, when the one or more programs are used by the one or more The processor executes, so that the one or more processors implement the image generation method based on an LCD liquid crystal device according to any one of claims 1-16.
A storage medium containing computer-executable instructions, the computer-executable instructions are used to execute the image generation method based on an LCD liquid crystal device according to any one of claims 1-16 when executed by a computer processor.