TWI722229B - Multi-camera module with different apertures and its application - Google Patents

Abstract

A multi-camera module with different apertures, such as a dual-camera module, which includes a black-and-white camera module and a color camera module. The black and white camera module has a larger lens aperture than the color camera module, so that the dual camera modules with different apertures can obtain better dark-state effects.

Description

Multi-camera module with different apertures and its application

The present invention relates to a multi-camera module, in particular to a dual-camera module with different apertures, which improves the dark state performance and definition of a final composite image and obtains more accurate depth information.

With the development of technology, various technological products have emerged correspondingly. It is a common situation for each person to hold a smart phone. The camera contained in the smart phone is a major function and large Most people are more accustomed to using mobile phone cameras instead of traditional cameras to record their lives and share directly to the Internet through the smart phones. In particular, in response to various needs and developments, the specifications of various related hardware and software components are constantly evolving. Therefore, people are gradually accustomed to using the camera functions of mobile phones to replace most of the cameras.

It is worth mentioning that the current mobile phone market still maintains a rapid growth trend, especially the growth of smart phones. Also because users have higher and higher requirements for camera quality, the pursuit of superior performance of camera modules has become a key technical field for fierce competition among major mobile phone manufacturers. In 2014, as Yulong released a dual-camera smartphone, the camera module entered the era of dual-camera. For the original dual camera, its main function is the 3D display effect and shooting ability, but the picture element is too low and the picture quality is not high, there is still a lot of room for improvement for the dual camera.

Therefore, the development trend of smart phone camera modules is developing towards dual camera technology, and because smart phones have strict requirements for thickness, they must provide excellent shooting effects without increasing the volume too much. In other words, the overall height of the camera module of the smart phone cannot be too high, which limits the size of the photosensitive chip not to be too large, and the imaging effect cannot be further improved. Therefore, in order to improve the image quality, a dual-camera solution is adopted. However, the dual-camera solution currently on the market uses the same RGB+MONO chip solution. Since the algorithm needs to synthesize the image, it is necessary to ensure the consistency of the image, and the lens of the same specification is used. However, the definition of the primitives of dual cameras is not a simple addition. Therefore, it is necessary to improve the performance of the dual camera module without increasing the cost, so that users have a better experience, especially to enhance the dark state effect. , Is of great significance for enhancing the user experience.

The main purpose of the present invention is to provide a multi-camera module with different apertures, which improves the dark performance and definition of the final synthesized image and obtains more accurate depth information.

Another object of the present invention is to provide a multi-camera module with different apertures, including more than two camera modules, which are at least one monochrome (black and white) camera module and at least one color camera module, It is equipped with a color photosensitive chip and a monochrome photosensitive chip (black and white camera chip) respectively, so that when the multi-camera modules with different apertures, such as dual camera modules, are used to capture images at the same time, the image captured by the color photosensitive chip is used As a reference image, the image captured by the monochromatic photosensitive chip is used as an auxiliary. In addition, the lens aperture of the camera module with the monochromatic photosensitive chip is increased, which can further enable the dual camera modules with different apertures to have better dark-state effects and sharpness.

Another object of the present invention is to provide a multi-camera module with different size apertures, wherein the lens apertures of the two camera modules are of different sizes, that is, the camera module that will match the monochromatic photosensitive chip The lens aperture of the lens is enlarged, which can ensure that the image is consistent and enhance the dark state effect.

Another object of the present invention is to provide a multi-camera module with different apertures, in which the color photosensitive chip only filters light to determine where the color should appear. Because of this, it will lose some details. However, the aperture of the monochromatic camera module of the present invention increases, so that the amount of light per unit time increases, because the monochromatic photosensitive chip is only interested in the amount of light incident at any given point, regardless of the color of the light. What is it, so that the monochrome photosensitive chip can capture richer details from the scene. It is these details that make the image clearer, and the dark state effect is significantly enhanced.

Another object of the present invention is to provide a multi-camera module with different apertures, in which an algorithm is used to ensure the focus, depth, and information of the two camera modules.

Another object of the present invention is to provide a multi-camera module with different sizes of apertures, which can realize the improvement of brightness and the reduction of noise under dark light. In addition, the dual camera modules with different apertures can also increase the focusing speed. Among them, the triangular distance measurement principle between the two camera modules and the focusing object is used to achieve the focusing speed.

In order to achieve at least one of the above objectives, the present invention provides a multi-camera module with different apertures, which includes: two or more camera modules, wherein the two or more camera modules have lens apertures with different aperture sizes.

In some embodiments, the two or more camera modules include at least one monochrome camera module and at least one color camera module, wherein the monochrome camera module and the color camera module have lenses with different aperture sizes aperture.

In some embodiments, the lens aperture of the monochrome camera module is larger than the lens aperture of the color camera module, so that the multi-camera module can obtain a better dark-state effect.

In some embodiments, the aperture factor Fno of the lens aperture of the monochrome camera module is 1.9, and the aperture factor Fno of the lens aperture of the color camera module is 2.0. It can be understood that the specific numerical values here are only examples and do not limit the present invention.

In some embodiments, the multi-camera module is a dual-camera module.

In some embodiments, the color camera module and the monochrome camera module are assembled on the same circuit board substrate.

In some embodiments, the color camera module and the monochrome camera module are respectively assembled on two circuit board substrates.

In some embodiments, the multi-camera module further includes a connecting unit connected to the circuit board substrate and used to connect the multi-camera module to a control motherboard of an electronic device.

In some embodiments, the multi-camera module further includes two connecting units respectively connected to the two circuit board substrates and used to connect the multi-camera module to a control motherboard of an electronic device.

In some embodiments, the images obtained by the color camera module and the monochrome camera module are finally used to synthesize a composite image.

In some embodiments, the color camera module is configured with a color photosensitive chip, which is implemented as an RGB or RGBW chip, and the monochrome camera module is configured with a black and white photosensitive chip, which is implemented as a MONO chip.

According to another aspect of the present invention, the present invention provides a multi-camera module image synthesis method, which includes the following steps: (a) Taking images by at least one color camera module and at least one monochrome camera module, wherein the monochrome camera module has a larger aperture relative to the color camera module to increase the amount of light; and ( b) Combining the images respectively obtained by the color camera module and the monochrome camera module to obtain a composite image.

In some embodiments, the monochromatic camera module adopts a larger lens aperture for the black and white chip to obtain more grayscale information, so that the final image of the multi-camera module can have better darkness. State effect and clarity.

In some embodiments, an image captured by the color camera module is used as a reference image, and another image captured by the monochrome camera module is used as an image processing auxiliary information.

10: Circuit board substrate

20: Monochrome camera module

30: Color camera module

40: Connection unit

10’: Circuit board substrate

20’: a monochrome camera module

30’: Color camera module

40’: Connection unit

FIG. 1 is a front perspective view of a multi-camera module with different apertures according to the first preferred embodiment of the present invention.

Fig. 2 is a left perspective view of a multi-camera module with different apertures according to the first preferred embodiment of the present invention.

3 is a right perspective view of a multi-camera module with different apertures according to the first preferred embodiment of the present invention.

4 is a bottom perspective view of a multi-camera module with different apertures according to the first preferred embodiment of the present invention.

5 is a front perspective view of a multi-camera module with different apertures according to the second preferred embodiment of the present invention.

6 is a left perspective view of a multi-camera module with different apertures according to the second preferred embodiment of the present invention.

FIG. 7 is a right perspective view of a multi-camera module with different apertures according to the second preferred embodiment of the present invention.

FIG. 8 is a bottom perspective view of a multi-camera module with different apertures according to the second preferred embodiment of the present invention.

The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and The description is simplified, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above-mentioned terms should not be construed as limiting the present invention.

It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, and in another embodiment, the number of the element The number can be more than one, and the term "one" cannot be understood as a restriction on the number.

As shown in Figures 1 to 4, it is a multi-camera module with different apertures according to the first preferred embodiment of the present invention, which is used in an electronic device, such as a smart phone, a tablet, a camera, a computer, For industrial inspection, medical inspection, and surveillance equipment, the quality of final images or images captured through the multi-camera modules with different apertures can be improved. In other words, the multi-camera modules with different apertures are mainly used for image element enhancement, panoramic deep shooting, larger HDR, dark state enhancement, and the like.

According to this preferred embodiment of the present invention, a dual camera module is taken as an example for specific description. The dual camera modules with different apertures include a circuit board substrate 10, two camera modules and a connecting unit 40. More specifically, in this embodiment, the two camera modules include a monochrome camera module 20 and a color camera module 30. The monochrome camera module 20 and the color camera module 30 are shared and shared by Fixed to the circuit board substrate 10 to ensure that the relative positions of the two camera modules will not be displaced, so as to ensure that the dual camera modules with different apertures will not occur when they are mounted on the electronic device. dislocation.

As shown in FIG. 1, it is a front perspective view of the dual camera module, which is configured with two camera modules. Figures 2 and 3 are left and right views of the dual camera module, respectively. Figure 4 is a schematic diagram of the bottom structure of the dual camera module. At the same time of reinforcement, heat dissipation can be enhanced. It can be understood that each of the camera modules may be a fixed focus camera module, or an auto-focus camera module equipped with a drive motor, and the present invention is not limited.

Correspondingly, the monochrome camera module 20 includes a lens and a monochrome photosensitive chip (black and white photosensitive chip), and the color camera module includes a lens and a color photosensitive chip. Said double The camera module is connected to the electronic device through the connection unit 40 such as a flexible circuit board. In other words, the color photosensitive chip corresponds to the color camera module 30, and the monochrome photosensitive chip corresponds to the monochrome camera module 20, so that the dual camera modules with different apertures are used for the When the image is taken, the color photosensitive chip is matched with the image or the image taken by the lens of the color camera module 30 as a reference image, and the monochrome photosensitive chip is matched with the monochrome camera module. The image or the image captured by the lens of the group 20 is used as auxiliary information for image processing, and is finally synthesized to obtain a synthesized image with better clarity. In other words, the color photosensitive chip and the color camera module 30 serve as a main camera, and its function is to shoot. The monochromatic photosensitive chip and the monochromatic camera module 20 are used as an auxiliary camera, and its function is to provide auxiliary image information.

According to this preferred embodiment of the present invention, the dual-camera modules with different apertures synthesize the reference image and the image processing auxiliary information through an algorithm to obtain the composite image, which can ensure the final The quality of the image or the image.

It is worth mentioning that the lens apertures of the color camera module 30 and the monochrome camera module 20 are different, that is to say, the dual camera modules with different apertures of the present invention are two apertures of different sizes. The combination of camera modules in which the aperture of the lens corresponding to the monochrome camera module is increased while ensuring the consistency of the images captured by the camera modules with different apertures, so as to improve the performance of the present invention. The dark state effect of the dual camera modules with different apertures. It is worth mentioning that the large aperture can ensure that the monochrome camera module has a stable and sufficient amount of light at all times, and it can also achieve good imaging effects in low-light environments. In addition, it can also perform background blurring. Special treatment, etc.

In addition, in the dual camera module of the present invention, the color camera module 30 is equipped with a color light filter. Correspondingly, the color sensor chip is only sensitive to color light, so some details will be lost. However, the aperture of the monochromatic camera module of the present invention increases, so that the amount of light per unit time increases. Because the monochromatic photosensitive chip does not need to consider the color of the light, the monochromatic photosensitive chip can be removed from the scene Capture richer details. It is these details that make the final composite image clearer, and the dark state effect is significantly enhanced.

According to this preferred embodiment of the present invention, the connecting unit 40 is implemented as a flexible circuit board (FPC), one end of which is connected to the circuit board substrate 10 (which may be a PCB rigid circuit board) of the dual camera module, so The other end of the flexible circuit board is connected to the control host board of the electronic device, so that the image information captured by the color camera module 30 and the monochrome camera module 20 can be transmitted to the control host of the electronic device Board and composite to get the final composite image. In addition, the color photosensitive chip can be implemented as an RGB (Red-Green-Blue) or RGBW Red-Green-Blu-White) chip. The monochromatic photosensitive wafer is implemented as a MONO (monochrome) wafer.

According to this preferred embodiment of the present invention, the aperture factor Fno of the lens aperture of the monochrome camera module 20 and the lens aperture of the color camera module 30 can be implemented as 1.9 and Fno2.0, respectively. It is understandable that the aperture factor Fno here is the ratio of the focal length of the camera module to the effective aperture. The smaller the value, the larger the aperture. In this embodiment, the lens aperture of the monochrome camera module 20 is 1.9, and the lens aperture of the color camera module 30 is 2.0, so that the monochrome camera module 20 with a larger aperture is used. The monochromatic photosensitive chip is used to capture more kinds of grayscale information. It is worth mentioning that such numerical combinations are only examples and do not limit the present invention. In another example, the combination of the lens aperture of the monochrome camera module 20 and the lens aperture of the color camera module 30 may be implemented as 1.8 and 1.9, respectively; or the monochrome camera module The aperture factor of the lens aperture of 20 and the aperture factor of the lens aperture of the color camera module 30 may be implemented as 2.0 and 2.2, etc., respectively.

In addition, the present invention also provides an image synthesis method for multi-camera modules with different apertures, which includes the following steps: using the color camera module 30 and the monochrome camera module of the multi-camera module 20 to capture images, wherein the monochrome camera module 20 has a larger aperture relative to the color camera module to increase the amount of light input; Combining the images respectively obtained by the color camera module 30 and the monochrome camera module 20 to obtain a composite image; and output or store the processed composite image.

The multi-camera module is implemented as a dual camera module, which is configured as a color camera module 30 with the color photosensitive chip and the monochrome camera module 20 with the monochromatic photosensitive chip. It is worth mentioning that the lens apertures of the color camera module 30 and the monochrome camera module 20 are different. In particular, although the lens apertures of the two camera modules are different, the two camera modules are different from each other. The captured images or images are consistent, so that the dark state effect is improved through dual camera modules with different apertures of the same pixel.

The monochromatic camera module 20 adopts a larger lens aperture for the monochromatic photosensitive chip to capture more various grayscale information, so that the final image of the dual camera module with different apertures can be improved. Good dark state effect and sharpness.

The image captured by the color camera module 30 with the color photosensitive chip is used as a reference image. An image captured by the monochrome camera module 20 with the monochrome photosensitive chip is used as an image processing auxiliary information.

Correspondingly, when synthesizing the image, the image processing auxiliary information is used to process the reference image, and the image synthesizing uses a picture splicing method.

As shown in Figures 5 to 8, it is a multi-camera module with different apertures according to the second preferred embodiment of the present invention, which is used in an electronic device, such as a smart phone, a tablet, a camera, a computer, For industrial inspection, medical inspection, and surveillance equipment, the quality of final images or images captured through the multi-camera modules with different apertures can be improved. In other words, the multi-camera modules with different apertures are mainly used for image element enhancement, panoramic deep shooting, larger HDR, dark state enhancement, and the like.

According to this preferred embodiment of the present invention, a dual camera module is taken as an example for specific description. The dual camera modules with different apertures include two circuit board substrates 10', a monochrome camera module 20', a color camera module 30', and two connecting units 40'. The monochrome camera module 20' and the color camera module 30' are respectively fixed to the two circuit board substrates 10' to ensure that the relative positions of the two camera modules will not shift, so as to ensure The dual camera modules with different apertures will not be misaligned when being mounted on the electronic device.

As shown in FIG. 5, it is a front perspective view of the dual camera module, which is configured with two camera modules. Figures 6 and 7 are left and right views of the dual camera module respectively. Figure 8 is a schematic diagram of the bottom structure of the dual camera module. At the same time of reinforcement, heat dissipation can be enhanced. It can be understood that each of the camera modules may be a fixed focus camera module, or an auto-focus camera module equipped with a drive motor, and the present invention is not limited.

Correspondingly, the monochrome camera module 20' includes a lens and a monochrome photosensitive chip (black and white photosensitive chip), and the color camera module 30' includes a lens and a color photosensitive chip. The dual camera module is connected to the electronic device through the connection unit 40' such as a flexible circuit board. That is to say, the color photosensitive chip corresponds to the color camera module 30', and the monochrome photosensitive chip corresponds to the monochrome camera module 20'. In this way, the dual camera module with different apertures is used for When the image is taken, the color photosensitive chip is matched with the image or the image taken by the lens of the color camera module 30' as a reference image, and the monochrome photosensitive chip is matched with the single The image or the image captured by the lens of the color camera module 20' is used as auxiliary information for image processing, and is finally synthesized to obtain a synthesized image with better clarity. In other words, the color photosensitive chip and the color camera module 30' serve as a main camera, and its function is to shoot. The monochromatic photosensitive chip and the monochromatic camera module 20' serve as an auxiliary camera, and its function is to provide auxiliary image information.

According to this preferred embodiment of the present invention, the dual-camera modules with different apertures synthesize the reference image and the image processing auxiliary information through an algorithm to obtain the synthesized image, which can ensure the final The quality of the image or the image.

It is worth mentioning that the lens apertures of the color camera module 30' and the monochrome camera module 20' are different, that is to say, the dual camera modules with different apertures of the present invention are two different cameras. The combination of camera modules with large and small apertures, in which the aperture of the lens corresponding to the monochromatic camera module is increased under the consistency of the images captured by the two camera modules with different apertures to increase the cost The invented dark-state effect of the dual-camera modules with different apertures. It is worth mentioning that the large aperture can ensure that the monochrome camera module has a stable and sufficient amount of light at all times, and it can also achieve good imaging effects in low-light environments. In addition, it can also perform background blurring. Special treatment, etc.

In addition, in the dual camera module of the present invention, the color camera module 30' is equipped with a color light filter. Correspondingly, the color sensor chip is only sensitive to color light, so some details will be lost. However, the aperture of the monochromatic camera module of the present invention increases, so that the amount of light per unit time increases, because the monochromatic photosensitive chip does not need to consider the color of the light, so the monochromatic photosensitive chip can capture more abundantly from the scene The details. It is these details that make the final composite image clearer, and the dark state effect is significantly enhanced.

According to this preferred embodiment of the present invention, the two connecting units 40' are implemented as flexible circuit boards (FPC), one end of which is connected to the two circuit board substrates 10' of the dual camera module (which may be PCB rigid Circuit board), the other end of the flexible circuit board is connected to the control motherboard of the electronic device, in other words, one of the connection units 40' is used to connect the circuit on which the monochrome camera module 20' is fixed The board substrate 10', the other connecting unit 40' is used to connect the circuit board substrate 10' to which the color camera module 30' is fixed, and the two connecting units 40' are respectively connected to the electronic device Control motherboard. In other words, the two connecting units 40' are respectively connected between the two circuit board substrates 10' and the control motherboard of the electronic device. In this way, the color camera module 30’ and the The image information captured by the monochrome camera module 20' can be transmitted to the control motherboard of the electronic device and synthesized to obtain the final synthesized image. In addition, the color photosensitive chip can be implemented as an RGB (Red-Green-Blue) or RGBW Red-Green-Blu-White) chip. The monochromatic photosensitive wafer is implemented as a MONO (monochrome) wafer.

According to this preferred embodiment of the present invention, the aperture factor Fno of the lens aperture of the monochrome camera module 20' and the lens aperture of the color camera module 30' can be implemented as 1.9 and Fno2.0, respectively. . It is understandable that the aperture factor Fno here is the ratio of the focal length of the camera module to the effective aperture. The smaller the value, the larger the aperture. In this embodiment, the lens aperture of the monochromatic camera module 20' is 1.9, and the lens aperture of the color camera module 30' is 2.0, so that the monochromatic camera module with a larger aperture is used Group 20' is used for the monochromatic photosensitive chip to capture more various grayscale information. It is worth mentioning that such numerical combinations are only examples and do not limit the present invention. In another example, the combination of the lens aperture of the monochrome camera module 20' and the lens aperture of the color camera module 30' may be implemented as 1.8 and 1.9, respectively; or the monochrome camera The aperture factor of the lens aperture of the module 20' and the lens aperture of the color camera module 30' can be implemented as 2.0 and 2.2, etc., respectively.

In addition, the present invention also provides an image synthesis method for multi-camera modules with different apertures, which includes the following steps: using the color camera module 30' and the monochrome camera module of the multi-camera module The group 20' captures images, wherein the monochrome camera module 20' has a larger aperture relative to the color camera module to increase the amount of light; the color camera module 30' and the monochrome camera The images obtained by the modules 20' are synthesized to obtain a synthesized image; and the synthesized image after processing is output or stored.

The multi-camera module is implemented as a dual camera module, which is configured as a color camera module 30' with the color photosensitive chip and the monochrome camera module 20' with the monochromatic photosensitive chip. It is worth mentioning that the lens apertures of the color camera module 30' and the monochrome camera module 20' are different. In particular, although the lens apertures of the two camera modules are different, the two camera modules have different apertures. The images or images captured by the groups are the same, so that the dark state effect is improved through dual camera modules with different apertures of the same pixel.

The monochromatic camera module 20' adopts a larger lens aperture for the monochromatic photosensitive chip to capture more various grayscale information, so that the final image of the dual camera module with different apertures can be Better dark state effect and clarity.

The image captured by the color camera module 30' with the color photosensitive chip is used as a reference image. An image captured by the monochrome camera module 20' with the monochrome photosensitive chip is used as an image processing auxiliary information.

Correspondingly, when synthesizing the image, the image processing auxiliary information is used to process the reference image, and the image synthesizing uses a picture splicing method.

Those skilled in the art should understand that the above description and the embodiments of the present invention shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been completely and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any deformation or modification.

20: Monochrome camera module

30: Color camera module

Claims (14)

A multi-camera module with different apertures, characterized by comprising: two or more camera modules, which are respectively fixed to at least one circuit board substrate to fix the relative positions of the two or more camera modules, wherein The two or more camera modules have lens apertures with different aperture sizes, and the two or more camera modules include at least one monochrome camera module and at least one color camera module. The lens aperture is larger than the lens aperture of the color camera module, so that the multi-camera module can obtain a better dark-state effect. The multi-camera module according to item 1 of the scope of patent application, wherein the aperture coefficient Fno of the lens aperture of the monochrome camera module is 1.9, and the aperture coefficient Fno of the lens aperture of the color camera module Is 2.0. The multi-camera module according to any one of items 1 to 2 of the scope of patent application, wherein the multi-camera module is a dual-camera module. According to the multi-camera module according to item 3 of the scope of patent application, the color camera module and the monochrome camera module are assembled on the same circuit board substrate. According to the multi-camera module according to item 3 of the scope of patent application, the color camera module and the monochrome camera module are respectively assembled on two circuit board substrates. The multi-camera module according to item 4 of the scope of patent application further includes a connecting unit connected to the circuit board substrate and used for connecting the multi-camera module to a control motherboard of an electronic device. The multi-camera module according to item 5 of the scope of patent application further includes two connecting units respectively connected to the two circuit board substrates and used for connecting the multi-camera module to the control motherboard of an electronic device . According to the multi-camera module described in the third scope of the patent application, the images obtained by the color camera module and the monochrome camera module are finally used to synthesize a composite image. The multi-camera module according to item 3 of the scope of patent application, wherein the color camera module is configured with a color photosensitive chip, which is implemented as an RGB or RGBW chip, wherein the monochrome camera module is configured with a black and white photosensitive chip, It is implemented as a MONO chip. An image synthesis method for multiple camera modules is characterized by comprising the following steps: (a) At least one color camera module and at least one monochrome camera module are respectively fixed to at least one circuit board substrate by relative positions Capturing an image, wherein the monochrome camera module has a larger aperture relative to the color camera module to increase the amount of light, so that the multi-camera module can obtain a better dark state effect; and (b) The images obtained by the color camera module and the monochrome camera module are combined to obtain a combined image. According to the image synthesis method described in item 10 of the scope of patent application, the multi-camera module is a dual-camera module. According to the image synthesis method described in item 10 of the scope of patent application, the monochromatic camera module adopts a larger lens aperture for the black and white chip to obtain more grayscale information, so that the multi-camera module The final image has better dark state effect and sharpness. The image synthesis method according to the tenth item of the scope of patent application, wherein an image captured by the color camera module is used as a reference image, and another image captured by the monochrome camera module is used as an image processing aid News. According to the image synthesis method according to any one of the 10th to 14th items of the scope of patent application, wherein the color camera module is configured with a color photosensitive chip, which is implemented as an RGB or RGBW chip, wherein the monochrome camera module The group is equipped with a black and white photosensitive chip, which is implemented as a MONO chip.

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