CN104243841B - A kind of image processing method and device - Google Patents
A kind of image processing method and device Download PDFInfo
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- CN104243841B CN104243841B CN201410513954.2A CN201410513954A CN104243841B CN 104243841 B CN104243841 B CN 104243841B CN 201410513954 A CN201410513954 A CN 201410513954A CN 104243841 B CN104243841 B CN 104243841B
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Abstract
The embodiment of the present application provides a kind of image processing method and device, optical filtering substrate is set between the camera lens and sensitive substrate of image collecting device, and the light transmittance of the optical filtering pixel unit in the optical filtering substrate is different, therefore, the intensity that the optical signal on sensitive substrate is projected by optical filtering substrate can be different, in turn, the current strength for the electric signal that foundation optical signal is converted to also is different, it can be seen that, the embodiment of the present application the method and device, utilize the optical filtering substrate of the optical filtering pixel unit with different light transmittances, the identical optical signal of script intensity can be made to convert out the different electric signal of current value, because the current value of electric signal is directly related to the photosensitive dynamic value of pixel, so, compared with existing image processing method and device, method and device described in the embodiment of the present application, it is bigger dynamic range can be obtained Image, to be conducive to improve the quality of image.
Description
Technical field
This application involves image capture and processing technology field, more particularly to a kind of image processing method and dress
It sets.
Background technique
Image-pickup device has been widely used.And it is imaged in the quality of the image absorbed and the image-pickup device
The pixel and photosensitive dynamic range of head are related.
Wherein, the photosensitive dynamic range of camera is bigger, the color that can include using the camera acquired image
Space is also bigger, and the highlights and dark portion details that can be got are also abundanter.However it is imaged in current image-pickup device
The photosensitive dynamic range of head is relatively narrow, is unfavorable for improving the picture quality of image capture.
Summary of the invention
In view of this, the application provides a kind of image processing method and device, it is therefore intended that solve current image capture
The photosensitive dynamic range of camera is relatively narrow in device, is unfavorable for the problem of improving the picture quality of image capture.
To achieve the above object, the application provides the following technical solutions:
A kind of image processing method is applied to electronic equipment, and the electronic equipment has at least one image collecting device,
Described image acquisition device includes that camera lens, sensitive substrate and setting filter base between the camera lens and the sensitive substrate
Plate；Wherein, the optical filtering substrate includes multiple filtered regions, and the filtered region is made of at least two optical filtering pixel units,
And the light transmittance of the optical filtering pixel unit in the filtered region is different；The described method includes:
When detecting that described image acquisition device carries out Image Acquisition, each filter area by optical filtering substrate is obtained
The optical filtering pixel unit in domain projects the optical signal of each pixel unit in the sensitive substrate；
It is photosensitive by being projected by the sensitive pixel elements of the same filtered region as unit of a filtered region
The optical signal of substrate is as a set to be processed；
The optical signal on the sensitive pixel elements each in the set to be processed is converted, is had
At least two electric signals of different photocurrent values；
Image is carried out based at least two electric signals described in a set to be processed with different photocurrent values
Synthesis.
Optionally, it is described based on described in a set to be processed at least two telecommunications of different photocurrent values
Number carry out image synthesis, comprising:
According to the corresponding photocurrent value of electric signal described in the set to be processed, target photocurrent is redefined
Value；
Image synthesis is carried out based on the target photocurrent value.
Optionally, when the filtered region is made of two optical filtering pixel units A and B, the light transmittance of the B is 100%,
And the light transmittance of A be less than B light transmittance when, by the optical signal on the pixel unit each in the set to be processed into
Row conversion, obtains at least two electric signals with different photocurrent values, comprising:
It is converted to the optical signal on the sensitive pixel elements A1 in the sensitive substrate is projected by optical filtering pixel unit A
Electric signal with the first photocurrent value；
It is converted to the optical signal on the sensitive pixel elements B1 in the sensitive substrate is projected by optical filtering pixel unit B
Electric signal with the second photocurrent value；
Then, the corresponding photocurrent value of the electric signal according to the set to be processed, redefines target sense
Photocurrent values, comprising:
If the second photocurrent value is greater than the first numerical value, it is determined that target photocurrent value is the first photocurrent value
Y times, first numerical value is the maximum value of the dynamic range of the camera lens, and the y is the light transmittance of 1/ A.
Optionally, the corresponding photocurrent value of the electric signal according to the set to be processed, redefines mesh
Mark photocurrent value, further includes:
If the second photocurrent value is greater than second value and is less than third value, it is determined that target photocurrent value
For the second photocurrent value；
If the second photocurrent value is greater than the third value and is less than first numerical value, it is determined that target sense
Photocurrent values are (A1*y+B1)/y, wherein A1 is the first photocurrent value, and B1 is the second photocurrent value.
Optionally, y times of minimum resolution of the third value at least more than the sensitive substrate.
Optionally, the corresponding photocurrent value of the electric signal according to the set to be processed, redefines mesh
Mark photocurrent value, further includes:
If the second photocurrent value is not more than first numerical value, it is determined that target photocurrent value is described the
Two photocurrent values.
A kind of image processing apparatus is applied to electronic equipment, and the electronic equipment has at least one image collecting device,
Described image acquisition device includes that camera lens, sensitive substrate and setting filter base between the camera lens and the sensitive substrate
Plate；Wherein, the optical filtering substrate includes multiple filtered regions, and the filtered region is made of at least two optical filtering pixel units,
And the light transmittance of the optical filtering pixel unit in the filtered region is different；Described device includes:
Optical signal obtains module, for obtaining by filtering when detecting that described image acquisition device carries out Image Acquisition
The optical filtering pixel unit of each filtered region of substrate projects the optical signal of each pixel unit in the sensitive substrate；
Preprocessing module is used for as unit of a filtered region, will be by the light-sensitive image of the same filtered region
Plain unit projects the optical signal of sensitive substrate as a set to be processed；
Conversion module, for carrying out the optical signal on the sensitive pixel elements each in the set to be processed
Conversion, obtains at least two electric signals with different photocurrent values；
Image synthesis module, for based on described in a set to be processed with different photocurrent values at least two
A electric signal carries out image synthesis.
Optionally, described image synthesis module is used for based on having different photocurrents described in a set to be processed
At least two electric signals of value carry out image synthesis
Described image synthesis module is specifically used for, according to the corresponding photocurrent of electric signal described in the set to be processed
Value redefines target photocurrent value, and carries out image synthesis based on the target photocurrent value.
Optionally, when the filtered region is made of two optical filtering pixel units A and B, the light transmittance of the B is 100%,
And when light transmittance of the light transmittance of A less than B, the conversion module is used for the pixel unit each in the set to be processed
On the optical signal converted, obtain at least two electric signals with different photocurrent values, comprising:
The conversion module is specifically used for, the photosensitive pixel that will be projected in the sensitive substrate by optical filtering pixel unit A
Optical signal on unit A1 is converted to the electric signal with the first photocurrent value；It will be projected by optical filtering pixel unit B described
The optical signal on sensitive pixel elements B1 in sensitive substrate is converted to the electric signal with the second photocurrent value；
Described image synthesis module is used for the corresponding photocurrent value of the electric signal according to the set to be processed, weight
It is new to determine that target photocurrent value includes:
Described image synthesis module is specifically used for, if the second photocurrent value is greater than the first numerical value, it is determined that target sense
Photocurrent values are y times of the first photocurrent value, and first numerical value is the maximum value of the dynamic range of the camera lens, the y
For the light transmittance of 1/ A.
Optionally, described image synthesis module is also used to: if the second photocurrent value is greater than second value and small
In third value, it is determined that target photocurrent value is the second photocurrent value；
If the second photocurrent value is greater than the third value and is less than first numerical value, it is determined that target sense
Photocurrent values are (A1*y+B1)/y, wherein A1 is the first photocurrent value, and B1 is the second photocurrent value.
Optionally, described image synthesis module is also used to:
If the second photocurrent value is not more than first numerical value, it is determined that target photocurrent value is described the
Two photocurrent values.
The embodiment of the present application provides a kind of image processing method and device, in the camera lens and photosensitive base of image collecting device
Optical filtering substrate is set, and the light transmittance of the optical filtering pixel unit in the optical filtering substrate is different, therefore, by optical filtering base between plate
The intensity that plate projects the optical signal on sensitive substrate can be different, in turn, by the light-sensitive image each in the set to be processed
The optical signal on plain unit is converted, and obtains at least two electric signals with different photocurrent values, it is seen then that this Shen
Please embodiment the method and device using the optical filtering substrate of the optical filtering pixel unit with different light transmittances can make original
The identical optical signal of this intensity converts out the different electric signal of current value, because the current value of electric signal is directly related to pixel
Photosensitive dynamic value, so, compared with existing image processing method and device, method and device described in the embodiment of the present application,
The bigger image of dynamic range can be obtained, to be conducive to improve the quality of image.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of image collecting device；
A kind of flow chart of image processing method disclosed in Fig. 2 the embodiment of the present application；
The flow chart of another image processing method disclosed in Fig. 3 the embodiment of the present application；
The flow chart of another image processing method disclosed in Fig. 4 the embodiment of the present application；
A kind of structural schematic diagram of image processing apparatus disclosed in Fig. 5 the embodiment of the present application.
Specific embodiment
The embodiment of the present application discloses a kind of image processing method, can apply on an electronic device, the electronic equipment
With at least one image collecting device, as shown in Figure 1, described image acquisition device includes camera lens, sensitive substrate and setting
The optical filtering substrate between the camera lens and the sensitive substrate.Wherein, the optical filtering substrate includes multiple filtered regions, the filter
Light region is made of at least two optical filtering pixel units, and the light transmittance of the optical filtering pixel unit in the filtered region is different,
For example, for one of filtered region tool there are two pixel unit A and B, the light transmittance of A and B is different in Fig. 1.
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
The embodiment of the present application discloses a kind of image processing method, as shown in Figure 2, comprising the following steps:
S201: when detecting that described image acquisition device carries out Image Acquisition, each optical filtering by optical filtering substrate is obtained
The optical filtering pixel unit in region projects the optical signal of each pixel unit in sensitive substrate；
After the filtering for passing through optical filtering pixel unit according to the characteristic of optical filtering pixel unit, light, project on sensitive substrate,
The light transmittance of optical filtering pixel unit determines the intensity of the optical signal obtained through optical filtering pixel unit, i.e. sensitive substrate, light transmission
Degree is higher, and the intensity for the optical signal that sensitive substrate obtains is bigger.
S202: using a filtered region as unit, photosensitive base will be projected by the sensitive pixel elements of same filtered region
The optical signal of plate is as a set to be processed；
S203: the optical signal in the set to be processed on each sensitive pixel elements is converted, and obtains having not
At least two electric signals of same feeling photocurrent values；
S204: image is carried out based at least two electric signals with different photocurrent values in a set to be processed
Synthesis.
That is optical filtering pixel unit A and B shown in Fig. 1, after light irradiates, due to light transmittance difference, thus it is possible to
Intensity by the remaining optical signal of A and B is different, and therefore, the intensity for projecting the optical signal on sensitive substrate is different, in turn,
The optical signal on the sensitive pixel elements each in the set to be processed is converted, obtained electric signal has
There is different current values, therefore, the image based on the different electric signal synthesis of current value can have bigger dynamic range, from
And be conducive to improve the quality of image.
Another image processing method disclosed in the embodiment of the present application, in the present embodiment, as shown in fig. 1, the light transmittance of B
For 100%, A light transmittance be less than B light transmittance, shown in Fig. 3, method shown in the present embodiment the following steps are included:
S301: when detecting that described image acquisition device carries out Image Acquisition, each optical filtering by optical filtering substrate is obtained
The optical filtering pixel unit in region projects the optical signal of each pixel unit in sensitive substrate；
S302: using a filtered region as unit, photosensitive base will be projected by the sensitive pixel elements of same filtered region
The optical signal of plate is as a set to be processed；
S303: the optical signal that will be projected by optical filtering pixel unit A on the sensitive pixel elements A1 in the sensitive substrate
Be converted to the electric signal with the first photocurrent value；
S304: the optical signal that will be projected by optical filtering pixel unit B on the sensitive pixel elements B1 in the sensitive substrate
Be converted to the electric signal with the second photocurrent value；
S305: according to the corresponding photocurrent value of electric signal described in the set to be processed, it is photosensitive to redefine target
Current value；
Specifically, the corresponding photocurrent value of the electric signal according to the set to be processed, redefines target sense
A kind of specific implementation of photocurrent values can be with are as follows:
If the second photocurrent value is greater than the first numerical value, it is determined that target photocurrent value is the first photocurrent value
Y times, wherein first numerical value is the maximum value of the dynamic range of the camera lens, and the y is the light transmittance of 1/ A；If
The second photocurrent value is not more than first numerical value, it is determined that target photocurrent value is second photocurrent
Value.
For example, the dynamic range of camera lens is 0-127, then the light transmittance that the first numerical value is 127, A is 50%, then y is 2, i.e.,
When the second photocurrent value is greater than 127, determine that target photocurrent value is 2 times of the photocurrent value of the first A object.
S306: image synthesis is carried out based on the target photocurrent value.
In the prior art, photosensitive when the intensity of optical signal is greater than 127 if the dynamic range of camera lens is 0-127
Substrate can only be regarded as the optical signal that intensity is 127, and it is 127 that image acquiring device, which can only also be converted into photocurrent value,
Electric signal, therefore, the dynamic range for obtaining image is limited.
And in the present embodiment, when the intensity of optical signal is greater than 127, during converted electrical, use the photosensitive of A
Current value is calculated, because the light transmittance of A is less than 100%, intensity is greater than 127 optical signal, after A, intensity drop
It is low, still can correctly it be identified by sensitive substrate, so, electric signal appropriate can be also converted to, in the base of appropriate electric signal
On plinth, the multiple that amplification is reduced by A originally can access the electric signal of correct current value.
For example, in the prior art, after projecting on sensitive substrate, can only be obtained photosensitive when the intensity of optical signal is 160
The electric signal that current value is 127 microamperes, and in the present embodiment, the optical signal that intensity is 160, after A, intensity becomes 80,
In the recognizable range of sensitive substrate, so, can correct the sense of access photocurrent values be 80 microamperes electric signal, then will obtain
Electric signal is multiplied by after 2, and as 160 microamperes.
As it can be seen that method described in the present embodiment, when light intensity is greater than the dynamic range headroom of camera lens, can still obtain with
The electric signal for the current value that light intensity matches, thus the dynamic range of enlarged image.
Another image processing method disclosed in the embodiment of the present application is applied to electronic equipment, has Fig. 1 in electronic equipment
The image collecting device, wherein the light transmittance that the light transmittance of A is 50%, B is 100%.
As shown in figure 4, the present embodiment the described method includes:
S401: when detecting that described image acquisition device carries out Image Acquisition, each optical filtering by optical filtering substrate is obtained
The optical filtering pixel unit in region projects the optical signal of each pixel unit in sensitive substrate；
S402: using a filtered region as unit, photosensitive base will be projected by the sensitive pixel elements of same filtered region
The optical signal of plate is as a set to be processed；
S403: the optical signal that will be projected by optical filtering pixel unit A on the sensitive pixel elements A1 in the sensitive substrate
Be converted to the electric signal with the first photocurrent value；
S404: the optical signal that will be projected by optical filtering pixel unit B on the sensitive pixel elements B1 in the sensitive substrate
Be converted to the electric signal with the second photocurrent value；
In the present embodiment, the first photocurrent value is indicated using A1, indicates the second photocurrent value using B1.
S405: if the second photocurrent value is greater than the first numerical value, it is determined that target photocurrent value is the first photosensitive electricity
Y times of flow valuve, it may be assumed that the numerical value of B1 > first, target photocurrent value=2*A1；
Wherein, first numerical value is the maximum value of the dynamic range of the camera lens.
S406: if the second photocurrent value is greater than second value and is less than third value, it is determined that target is photosensitive
Current value is the second photocurrent value, i.e. second value < B1 < third value, target photocurrent value=B1；
Wherein, the third value is at least more than y times of minimum resolution of the sensitive substrate, for example, 50% it is saturating
In the case where light rate, if sensitive substrate minimum can differentiate 1 unit light intensity degree, the light that intensity is 2 penetrates 50% light transmission
It after the unit of rate, can be identified, then small, cannot identify just, in practical application, third value can be 90 microamperes, the
Two numerical value can be 0.
S407: if the second photocurrent value is greater than the third value and is less than first numerical value, that is, third number
The numerical value of value < B1 < first, it is determined that target photocurrent value=(A1*y+B1)/y；
In the present embodiment, the unit of photocurrent value is microampere.
S408: image synthesis is carried out based on the target photocurrent value.
In the present embodiment, the photocurrent that the electric signal on sensitive substrate determines a pixel jointly is incident upon using A and B
Value determines the photocurrent value of a pixel jointly using two pixel units in photosensitive region, it is intended that sacrificing
The resolution ratio of image improves the dynamic range of image.If the dynamic range of camera lens is 1-127, in the present embodiment, image
Dynamic range expansion is to 0-255.Also, in the present embodiment, the numberical range different according to B1 determines the photosensitive electricity of object pixel
Flow valuve enables to the level of the dynamic range of image more uniformly and abundant.
Another image processing method disclosed in the embodiment of the present application is applied to electronic equipment, has Fig. 1 in electronic equipment
The image collecting device includes N number of optical filtering pixel unit in one filtered region of described image acquisition device, wherein
The light transmittance of optical filtering pixel unit 1 is 100%, and the light transmittance of optical filtering pixel unit 2 is 50%, the light transmission of optical filtering pixel unit 3
Rate is 25%, and the light transmittance of the light transmittance 125%...... optical filtering pixel unit N of optical filtering pixel unit 4 is 1/2a-1, here, N
Meet with the relationship of a: N=2a.
Compared with above-described embodiment, difference is the present embodiment, the optical filtering pixel unit for including in a filtered region
Quantity be it is N number of, in the case, according to the corresponding photocurrent value of electric signal described in the set to be processed, redefine
A kind of specific implementation of target photocurrent value can be with are as follows:
The photocurrent value for reading 1,2,3,4 ... .N of optical filtering pixel unit, if the photocurrent value of optical filtering pixel unit N
Meet: YN > (1/2a-2) X, then target photocurrent value value is (2a-2) * YN；
If the photosensitive value of optical filtering pixel unit N meets: (1/2a-3) X > YN > (1/2a-2) X reads optical filtering pixel list
The photocurrent value Y (N-1) of first N-1, if Y (N-1) > ((1/2a-3) X), target photosensitive value value is (2a-3) * Y (N-
1)。
That is, determine the photocurrent value of a pixel jointly using N number of pixel unit in photosensitive region, even if
The sensitive volume of 0~X is shot with optical filtering pixel unit 1, optical filtering pixel unit 2 shoots the sensitive volume of X~2X, optical filtering pixel list
Member 3 shoots the sensitive volume of 2X~4X, the sensitive volume of 4 points of optical filtering pixel unit shooting 4X~8X, optical filtering pixel unit N shooting
The sensitive volume of 2a-2X~2a-1X.Therefore, the photosensitive dynamic range of image expands to 0~2a-1X from 0 original~X.
With above method embodiment correspondingly, the embodiment of the present application also discloses a kind of image processing apparatus, is applied to
Electronic equipment, the electronic equipment have at least one image collecting device, and described image acquisition device includes camera lens, photosensitive base
Plate and the setting optical filtering substrate between the camera lens and the sensitive substrate；Wherein, the optical filtering substrate includes multiple optical filterings
Region, the filtered region are made of at least two optical filtering pixel units, and the optical filtering pixel unit in the filtered region
Light transmittance is different.
As shown in figure 5, described device includes:
Optical signal obtains module 501, for obtaining by filtering when detecting that described image acquisition device carries out Image Acquisition
The optical filtering pixel unit of each filtered region of photopolymer substrate projects the light letter of each pixel unit in the sensitive substrate
Number；
Preprocessing module 502 is used for as unit of a filtered region, will be by the photosensitive of the same filtered region
Pixel unit projects the optical signal of sensitive substrate as a set to be processed；
Conversion module 503, for by the optical signal on the sensitive pixel elements each in the set to be processed
It is converted, obtains at least two electric signals with different photocurrent values；
Image synthesis module 504, for based on there are different photocurrent values extremely described in a set to be processed
Few two electric signals carry out image synthesis.
Specifically, described image synthesis module based on described in a set to be processed with different photocurrent values
The specific implementation that at least two electric signals carry out image synthesis can be with are as follows: according to electric signal described in the set to be processed
Corresponding photocurrent value redefines target photocurrent value, and carries out image synthesis based on the target photocurrent value.
Further, when the filtered region is made of two optical filtering pixel units A and B, the light transmittance of the B is
100%, and when the light transmittance of A is less than the light transmittance of B, the conversion module is by the pixel list each in the set to be processed
The optical signal in member is converted, and the specific implementation at least two electric signals of different photocurrent values is obtained
It can be with are as follows: be converted to the optical signal on the sensitive pixel elements A1 in the sensitive substrate is projected by optical filtering pixel unit A
Electric signal with the first photocurrent value；The photosensitive pixel list that will be projected by optical filtering pixel unit B in the sensitive substrate
Optical signal on first B1 is converted to the electric signal with the second photocurrent value；
The corresponding photocurrent value of described image synthesis module electric signal according to the set to be processed, again really
The specific implementation for the photocurrent value that sets the goal are as follows: if the second photocurrent value is greater than the first numerical value, it is determined that target sense
Photocurrent values are y times of the first photocurrent value, and first numerical value is the maximum value of the dynamic range of the camera lens, the y
For the light transmittance of 1/ A.
Further, described image synthesis module can be also used for: if the second photocurrent value is greater than the second number
It is worth and is less than third value, it is determined that target photocurrent value is the second photocurrent value；If the second photosensitive electricity
Flow valuve is greater than the third value and is less than first numerical value, it is determined that and target photocurrent value is (A1*y+B1)/y,
In, A1 is the first photocurrent value, and B1 is the second photocurrent value；If the second photocurrent value is not more than
First numerical value, it is determined that target photocurrent value is the second photocurrent value.
Further, described image synthesis module can be also used for: include N number of optical filtering pixel in a filtered region
Unit, wherein the light transmittance of optical filtering pixel unit 1 is 100%, and the light transmittance of optical filtering pixel unit 2 is 50%, optical filtering pixel list
The light transmittance of member 3 is 25%, and the light transmittance of the light transmittance 125%...... optical filtering pixel unit N of optical filtering pixel unit 4 is 1/
2a-1, and the relationship of N and a meets: in the case where N=2a, the photocurrent value of optical filtering pixel unit 1,2,3,4 ... .N is read,
The photocurrent value for reading 1,2,3,4 ... .N of optical filtering pixel unit, if the photocurrent value of optical filtering pixel unit N meets: YN >
(1/2a-2) X, then target photocurrent value value is (2a-2) * YN；
If the photosensitive value of optical filtering pixel unit N meets: (1/2a-3) X > YN > (1/2a-2) X reads optical filtering pixel list
The photocurrent value Y (N-1) of first N-1, if Y (N-1) > ((1/2a-3) X), target photosensitive value value is (2a-3) * Y (N-
1)。
Device described in the present embodiment, is capable of the dynamic range of enlarged image, to improve the quality of image.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (11)
1. a kind of image processing method, which is characterized in that be applied to electronic equipment, the electronic equipment has at least one image
Acquisition device, described image acquisition device include a camera lens, sensitive substrate and are arranged in the camera lens and the photosensitive base
Optical filtering substrate between plate；Wherein, the optical filtering substrate includes multiple filtered regions, and the filtered region is by least two optical filtering pictures
Plain unit composition, and the light transmittance of the optical filtering pixel unit in the filtered region is different；The described method includes:
When detecting that described image acquisition device carries out Image Acquisition, obtain by each filtered region of optical filtering substrate
Optical filtering pixel unit projects the optical signal of each pixel unit in the sensitive substrate；
As unit of a filtered region, sensitive substrate will be projected by the sensitive pixel elements of the same filtered region
Optical signal as a set to be processed；
The optical signal on the sensitive pixel elements each in the set to be processed is converted, obtains that there is difference
At least two electric signals of photocurrent value；
Image synthesis is carried out based at least two electric signals described in a set to be processed with different photocurrent values.
2. the method according to claim 1, wherein described based on having not described in a set to be processed
At least two electric signals of same feeling photocurrent values carry out image synthesis, comprising:
According to the corresponding photocurrent value of electric signal described in the set to be processed, target photocurrent value is redefined；
Image synthesis is carried out based on the target photocurrent value.
3. according to the method described in claim 2, it is characterized in that, when the filtered region is by two optical filtering pixel units A and B
Composition, the light transmittance of the B are 100%, and when light transmittance of the light transmittance of A less than B, by institute each in the set to be processed
The optical signal stated on pixel unit is converted, and at least two electric signals with different photocurrent values are obtained, comprising:
The optical signal projected on the sensitive pixel elements A1 in the sensitive substrate by optical filtering pixel unit A, which is converted to, to be had
The electric signal of first photocurrent value；
The optical signal projected on the sensitive pixel elements B1 in the sensitive substrate by optical filtering pixel unit B, which is converted to, to be had
The electric signal of second photocurrent value；
Then, the corresponding photocurrent value of the electric signal according to the set to be processed, redefines the photosensitive electricity of target
Flow valuve, comprising:
If the second photocurrent value is greater than the first numerical value, it is determined that target photocurrent value is y times of the first photocurrent value,
First numerical value is the maximum value of the dynamic range of the camera lens, and the y is the light transmittance of 1/ A.
4. according to the method described in claim 3, it is characterized in that, the electric signal pair according to the set to be processed
The photocurrent value answered redefines target photocurrent value, further includes:
If the second photocurrent value is greater than second value and is less than third value, it is determined that target photocurrent value is institute
State the second photocurrent value；
If the second photocurrent value is greater than the third value and is less than first numerical value, it is determined that the photosensitive electricity of target
Flow valuve is (A1*y+B1)/y, wherein A1 is the first photocurrent value, and B1 is the second photocurrent value.
5. according to the method described in claim 4, it is characterized in that, the third value most at least more than the sensitive substrate
Y times of small resolution ratio.
6. according to the method described in claim 3, it is characterized in that, the electric signal pair according to the set to be processed
The photocurrent value answered redefines target photocurrent value, further includes:
If the second photocurrent value is not more than first numerical value, it is determined that target photocurrent value is second sense
Photocurrent values.
7. a kind of image processing apparatus, which is characterized in that be applied to electronic equipment, the electronic equipment has at least one image
Acquisition device, described image acquisition device include a camera lens, sensitive substrate and are arranged in the camera lens and the photosensitive base
Optical filtering substrate between plate；Wherein, the optical filtering substrate includes multiple filtered regions, and the filtered region is by least two optical filtering pictures
Plain unit composition, and the light transmittance of the optical filtering pixel unit in the filtered region is different；Described device includes:
Optical signal obtains module, for obtaining by optical filtering substrate when detecting that described image acquisition device carries out Image Acquisition
The optical filtering pixel unit of each filtered region project the optical signal of each pixel unit in the sensitive substrate；
Preprocessing module is used for as unit of a filtered region, will be by the photosensitive pixel list of the same filtered region
Member projects the optical signal of sensitive substrate as a set to be processed；
Conversion module, for being turned the optical signal on the sensitive pixel elements each in the set to be processed
It changes, obtains at least two electric signals with different photocurrent values；
Image synthesis module, for based at least two electricity described in a set to be processed with different photocurrent values
Signal carries out image synthesis.
8. device according to claim 7, which is characterized in that described image synthesis module is used to be based on a collection to be processed
At least two electric signals with different photocurrent values in conjunction carry out image synthesis
Described image synthesis module is specifically used for, according to the corresponding photocurrent value of electric signal described in the set to be processed,
Target photocurrent value is redefined, and image synthesis is carried out based on the target photocurrent value.
9. device according to claim 8, which is characterized in that when the filtered region is by two optical filtering pixel units A and B
Composition, the light transmittance of the B are 100%, and when the light transmittance of A is less than the light transmittance of B, the conversion module be used for will it is described to
The optical signal in processing set on each pixel unit is converted, and obtains having different photocurrent values at least
Two electric signals, comprising:
The conversion module is specifically used for, the sensitive pixel elements that will be projected in the sensitive substrate by optical filtering pixel unit A
Optical signal on A1 is converted to the electric signal with the first photocurrent value；It will be projected by optical filtering pixel unit B described photosensitive
The optical signal on sensitive pixel elements B1 in substrate is converted to the electric signal with the second photocurrent value；
Described image synthesis module is used for the corresponding photocurrent value of the electric signal according to the set to be processed, again really
The photocurrent value that sets the goal includes:
Described image synthesis module is specifically used for, if the second photocurrent value is greater than the first numerical value, it is determined that the photosensitive electricity of target
Flow valuve is y times of the first photocurrent value, and first numerical value is the maximum value of the dynamic range of the camera lens, and the y is 1/
The light transmittance of the A.
10. device according to claim 9, which is characterized in that described image synthesis module is also used to: if described second
Photocurrent value is greater than second value and is less than third value, it is determined that target photocurrent value is second photocurrent
Value；
If the second photocurrent value is greater than the third value and is less than first numerical value, it is determined that the photosensitive electricity of target
Flow valuve is (A1*y+B1)/y, wherein A1 is the first photocurrent value, and B1 is the second photocurrent value.
11. device according to claim 10, which is characterized in that described image synthesis module is also used to:
If the second photocurrent value is not more than first numerical value, it is determined that target photocurrent value is second sense
Photocurrent values.
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| CN110602380B (en) * | 2019-08-15 | 2022-11-04 | 深圳壹账通智能科技有限公司 | Video shooting method, device, equipment and medium based on ambient light detection |
| CN112437209B (en) * | 2019-08-26 | 2022-07-26 | 北京地平线机器人技术研发有限公司 | Device, method and system for adjusting incident light intensity of camera device |
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