CN105721799A - Image sensor and method and device for removing interframe intrinsic noise - Google Patents

Image sensor and method and device for removing interframe intrinsic noise Download PDF

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Publication number
CN105721799A
CN105721799A CN201410733685.0A CN201410733685A CN105721799A CN 105721799 A CN105721799 A CN 105721799A CN 201410733685 A CN201410733685 A CN 201410733685A CN 105721799 A CN105721799 A CN 105721799A
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sensitization data
photosensitive pixel
intrinsic
imageing sensor
data
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CN201410733685.0A
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Chinese (zh)
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CN105721799B (en
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毛水江
郭先清
傅璟军
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比亚迪股份有限公司
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Abstract

The invention discloses a method for removing the interframe intrinsic noise of an image sensor, and the method comprises the steps: S1, reading the normal light-sensing data of light-sensing pixels at an N-th row at an n-th moment, wherein n and N are positive integers; S2, carrying out the resetting of the light-sensing pixels at the N-th row at an (n+1) moment, and reading the intrinsic light-sensing data of the light-sensing pixels at the N-th row; S3, removing the intrinsic noise in the normal light-sensing data of the light-sensing pixels at the N-th row according to the intrinsic light-sensing data. The method can effectively remove the intrinsic noise among noise frames, does not affect the detail of an image, and enables the image to maintain the sharpness before the intrinsic noise is removed. The invention also discloses a device for removing the interframe intrinsic noise of the image sensor, and the image sensor comprising the device.

Description

Imageing sensor and the method and apparatus removing interframe intrinsic noise thereof

Technical field

The present invention relates to technical field of image processing, particularly to a kind of method of interframe intrinsic noise removing imageing sensor, the device of a kind of interframe intrinsic noise removing imageing sensor and a kind of imageing sensor.

Background technology

Imageing sensor quickly grows in recent years, while imageing sensor sales volume constantly rises, user is also more and more higher for the requirement of picture quality, wherein one of most important index of picture quality is exactly signal to noise ratio, impact by hardware, environment and the factor such as artificial, image will necessarily having noise and various noise, thus have impact on the details of image to a great extent, finally affecting picture quality.In correlation technique, corresponding various Denoising Algorithm emerge successively, for instance local auto-adaptive denoising, Noise Elimination from Wavelet Transform, medium filtering denoising etc..

Denoising Algorithm in correlation technique has the drawback that: on the one hand owing to noise is in high-frequency region, it is easy to obscure with the image detail being in signal high-frequency region, bring the loss of details so that image thickens while denoising.On the other hand, some Denoising Algorithm (such as Noise Elimination from Wavelet Transform) operand is too big, realize more complicated, be not suitable for the CMOS (ComplementaryMetalOxideSemiconductor of low-cost design in recent years, complementary metal oxide semiconductors (CMOS)) and CCD (Charge-coupledDevice, charge coupled cell) imageing sensor in.Accordingly, it would be desirable to correlation technique is improved.

Summary of the invention

The purpose of the present invention is intended to solve at least to a certain extent one of above-mentioned technical problem.

For this, a kind of method that it is an object of the present invention to propose interframe intrinsic noise removing imageing sensor, the method of the interframe intrinsic noise of this removal imageing sensor can remove the intrinsic noise in picture frame, and do not affect image detail, so that image keeps removing the definition before intrinsic noise.

Further object is that the device proposing a kind of interframe intrinsic noise removing imageing sensor.

Another object of the present invention is in that to propose a kind of imageing sensor.

For reaching above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of method of interframe intrinsic noise removing imageing sensor, the method of the interframe intrinsic noise of this removal imageing sensor comprises the following steps: S1, n-th the moment read Nth row photosensitive pixel normal sensitization data, wherein, n and N is positive integer;S2, in the (n+1)th moment, described Nth row photosensitive pixel is resetted, and read the intrinsic sensitization data of described Nth row photosensitive pixel;And S3, according to described intrinsic sensitization data remove described Nth row photosensitive pixel described normal sensitization data in intrinsic noise.

The method of the interframe intrinsic noise removing imageing sensor that the embodiment of the present invention proposes, the normal sensitization data of Nth row photosensitive pixel is read in the n-th moment, and in the (n+1)th moment, Nth row photosensitive pixel is resetted, and read the intrinsic sensitization data of Nth row photosensitive pixel, the intrinsic noise in the normal sensitization data of Nth row photosensitive pixel is removed finally according to intrinsic sensitization data.The method of the interframe intrinsic noise of this removal imageing sensor can effectively remove the intrinsic noise of image interframe, and does not affect image detail, so that image can keep removing the definition before intrinsic noise.

For reaching above-mentioned purpose, another aspect of the present invention embodiment also proposed the device of a kind of interframe intrinsic noise removing imageing sensor, the device of the interframe intrinsic noise of this removal imageing sensor includes: photosensitive pixel array, and described photosensitive pixel array includes multirow photosensitive pixel;Sensitization data reads module, described sensitization data reads module and is connected with described photosensitive pixel array, described sensitization data reads module and includes the first sensitization data sensing element and the second sensitization data sensing element, wherein, described first sensitization data sensing element for reading the normal sensitization data of Nth row photosensitive pixel in the n-th moment, described second sensitization data sensing element is for resetting to described Nth row photosensitive pixel in the (n+1)th moment, and read the intrinsic sensitization data of described Nth row photosensitive pixel, wherein, n and N is positive integer;And processing module, described processing module reads module with described sensitization data and is connected, and described processing module is for the intrinsic noise in the described normal sensitization data according to the described intrinsic sensitization data described Nth row photosensitive pixel of removal.

The device of the interframe intrinsic noise removing imageing sensor that the embodiment of the present invention proposes, the the first sensitization data sensing element read in module by sensitization data reads the normal sensitization data of Nth row photosensitive pixel in photosensitive pixel array in the n-th moment, Nth row photosensitive pixel is resetted by the second sensitization data sensing element in the (n+1)th moment, and read the intrinsic sensitization data of Nth row photosensitive pixel, and then processing module removes the intrinsic noise in the normal sensitization data of Nth row photosensitive pixel according to intrinsic sensitization data.The device of the interframe intrinsic noise of this removal imageing sensor can effectively remove the intrinsic noise of image interframe, and does not affect image detail, so that image can keep removing the definition before intrinsic noise.

For reaching above-mentioned purpose, further aspect of the present invention embodiment also proposed a kind of imageing sensor, and this imageing sensor includes the device of the described interframe intrinsic noise removing imageing sensor.

The imageing sensor that the embodiment of the present invention proposes, removes the intrinsic noise of image interframe, and does not affect image detail, so that image keeps removing the definition before intrinsic noise by removing the device of the interframe intrinsic noise of imageing sensor.

Aspect and advantage that the present invention adds will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.

Accompanying drawing explanation

The present invention above-mentioned and/or that add aspect and advantage will be apparent from easy to understand from the following description of the accompanying drawings of embodiments, wherein:

Fig. 1 is the flow chart of the method for the interframe intrinsic noise removing imageing sensor according to embodiments of the present invention;

Fig. 2 is the flow chart of the method for the interframe intrinsic noise removing imageing sensor according to one specific embodiment of the present invention;

Fig. 3 is according to the schematic diagram of data DATA1, data DATA2 and data DATA3 in the method for the interframe intrinsic noise removing imageing sensor of one specific embodiment of the present invention;

Fig. 4 is the block diagram of the device of the interframe intrinsic noise removing imageing sensor according to embodiments of the present invention;And

Fig. 5 is the block diagram of the device of the interframe intrinsic noise removing imageing sensor according to an embodiment of the invention.

Detailed description of the invention

Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish.The embodiment described below with reference to accompanying drawing is illustrative of, and is only used for explaining the present invention, and is not construed as limiting the claims.

Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.In order to simplify disclosure of the invention, hereinafter parts and setting to specific examples are described.Certainly, they are only merely illustrative, and are not intended to the restriction present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter.This repetition is for purposes of simplicity and clarity, the relation between itself not indicating discussed various embodiment and/or arranging.Additionally, the example of the various specific technique that the invention provides and material, but those of ordinary skill in the art are it can be appreciated that the use of the property of can be applicable to of other techniques and/or other materials.Additionally, fisrt feature described below second feature it " on " structure can include the first and second features and be formed as the embodiment of directly contact, can also including other feature and form the embodiment between the first and second features, such first and second features are not likely to be direct contact.

In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, can be mechanically connected or electrical connection, can also be the connection of two element internals, it is possible to be joined directly together, it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, it is possible to understand the concrete meaning of above-mentioned term as the case may be.

The method of the interframe intrinsic noise removing imageing sensor proposed according to embodiments of the present invention, the device removing the interframe intrinsic noise of imageing sensor and imageing sensor are described with reference to the accompanying drawings.

As it is shown in figure 1, the method for the interframe intrinsic noise removing imageing sensor of the embodiment of the present invention comprises the following steps:

S1, n-th the moment read Nth row photosensitive pixel normal sensitization data, wherein, n and N is positive integer.

S2, in the (n+1)th moment, Nth row photosensitive pixel is resetted, and read the intrinsic sensitization data of Nth row photosensitive pixel.

Wherein, intrinsic sensitization data can be the fixing static noise produced in the analog circuit of imageing sensor, such as FPN (FixedPatternNoise, fixed pattern noise), static point noise or static block distortion etc., these fixing static noises are to maintain constant between frame and frame, without along with the change of environment, the time of integration length change and change.

S3, according to intrinsic sensitization data remove Nth row photosensitive pixel normal sensitization data in intrinsic noise.

Further, in one embodiment of the invention, the method for the interframe intrinsic noise removing imageing sensor can also include:

S4, repeated execution of steps S1-S3, until all row photosensitive pixels in imageing sensor are disposed.

Further, in one embodiment of the invention, after reading the normal sensitization data of Nth row photosensitive pixel, the method for the interframe intrinsic noise removing imageing sensor can also include:

S5, the normal sensitization data of Nth row photosensitive pixel is stored in the Nth row among memorizer, and delays a line and read the normal sensitization data of Nth row photosensitive pixel.

Wherein, the normal sensitization data delaying a line reading Nth row photosensitive pixel is the normal sensitization data at the (n+1)th moment reading Nth row photosensitive pixel.In one embodiment of the invention, imageing sensor can be cmos image sensor, ccd image sensor etc., and memorizer can be SRAM (StaticRandomAccessMemory, SRAM) etc..

Further, in one embodiment of the invention, remove the intrinsic noise in normal sensitization data according to intrinsic sensitization data and step S3 specifically may include that

S6, deduct intrinsic sensitization data to remove the intrinsic noise in normal sensitization data by delaying the normal sensitization data of Nth row photosensitive pixel that a line reads.

In one particular embodiment of the present invention, it is applied to include on the photosensitive array of 640 row 480 row photosensitive pixels by the method removing the interframe intrinsic noise of imageing sensor, now, as in figure 2 it is shown, the method for the interframe intrinsic noise of this removal imageing sensor comprises the following steps:

S20, photosensitive pixel array is integrated photosensitive.

S21, read the 1st row photosensitive pixel normal sensitization data 1A.

S22, the 1st row data are resetted.

Sensitization data 1D after S23, reading the 1st horizontal reset.

Above-mentioned steps S21 to step S23 is the mode that row repeats to read.

S24, row according to step S21 to step S23 repeat the mode read, and read the 2nd row photosensitive pixel to the normal sensitization data 2A to 480A of the 480th row photosensitive pixel and the sensitization data 2D to 480D after resetting.

Wherein, the sensitization data 1D to 480D after reset includes the 1st intrinsic sensitization data walking to the 480th row respectively.

S25, by read normal sensitization data 1A to 480A and reset after sensitization data 1D to 480D be arranged as 1A1D ... 480A480D, obtain data DATA1.

The line number of data DATA1 is the twice of imageing sensor truthful data line number.Wherein, normal sensitization data 1A to 480A comprises effective picture signal, fixing static noise and the first dynamic noise.Sensitization data 1D to 480D after reset comprises fixing static noise and the second dynamic noise, the first dynamic noise and the second dynamic noise different.

Data DATA1 is stored by a line in S26, use SRAM, and carries out delaying the 1D row of the 1A row correspondence DATA1 that a line operation obtains DATA2, DATA2.

S27, data DATA2 is deducted data DATA1, obtain data DATA3.

Specifically, the DATA2 that fetches data deducts effective row 1AD, 2AD, 3AD in the data obtained after data DATA1 ... 480AD, data DATA3, data DATA1 after interframe removes fixing static noise, data DATA2 and data DATA3 can be obtained as shown in Figure 3.Owing to the first dynamic noise and the second dynamic noise are different, therefore, after deducting data DATA1 with data DATA2, only the fixing static noise in normal sensitization data 1A to 480A is deducted, and effective picture signal there is no and is affected, thus data DATA3 very perfectly remains the details of image.

It should be noted that the line number of the data DATA3 owing to reading is the twice of imageing sensor truthful data line number, in order to keep frame per second, it is necessary to the clock frequency of imageing sensor is doubled.

The method of the interframe intrinsic noise removing imageing sensor that the embodiment of the present invention proposes, the normal sensitization data of Nth row photosensitive pixel is read in the n-th moment, and in the (n+1)th moment, Nth row photosensitive pixel is resetted, and read the intrinsic sensitization data of Nth row photosensitive pixel, the intrinsic noise in the normal sensitization data of Nth row photosensitive pixel is removed finally according to intrinsic sensitization data.The method of the interframe intrinsic noise of this removal imageing sensor can effectively remove the intrinsic noise of image interframe, and does not affect image detail, so that image can keep removing the definition before intrinsic noise.

Another aspect of the present invention embodiment also proposed the device of a kind of interframe intrinsic noise removing imageing sensor, as shown in Figure 4, the device of the interframe intrinsic noise of this removal imageing sensor includes: photosensitive pixel array 10, sensitization data read module 20 and processing module 30.Wherein, photosensitive pixel array 10 includes multirow photosensitive pixel.Sensitization data reads module 20 and is connected with photosensitive pixel array 10, sensitization data reads module 20 and includes the first sensitization data sensing element 201 and the second sensitization data sensing element 202, wherein, first sensitization data sensing element 201 for reading the normal sensitization data of Nth row photosensitive pixel in the n-th moment, second sensitization data sensing element 202 is for resetting to Nth row photosensitive pixel in the (n+1)th moment, and read the intrinsic sensitization data of Nth row photosensitive pixel, wherein, n and N is positive integer.Processing module 30 reads module 20 with sensitization data and is connected, and processing module 30 is for the intrinsic noise in the normal sensitization data according to intrinsic sensitization data removal Nth row photosensitive pixel.

In one embodiment of the invention, imageing sensor can be cmos image sensor, ccd image sensor etc..

Further, in one embodiment of the invention, processing module 30 can include removing intrinsic noise unit 301, remove intrinsic noise unit 301 and the normal sensitization data of Nth row photosensitive pixel is stored in the Nth row among memorizer, and delay a line and read the normal sensitization data of Nth row photosensitive pixel, and go intrinsic sensitization data to remove the intrinsic noise in normal sensitization data by delaying the normal sensitization data of Nth row photosensitive pixel that a line reads.Specifically, in one embodiment of the invention, memorizer can be SRAM etc..Wherein, the normal sensitization data delaying a line reading Nth row photosensitive pixel is the normal sensitization data at the (n+1)th moment reading Nth row photosensitive pixel.

Further, in one embodiment of the invention, remove intrinsic noise unit 301 to be additionally operable to the intrinsic sensitization data according to other row photosensitive pixel and remove the intrinsic noise in the normal sensitization data of other row photosensitive pixel, until all row photosensitive pixels in imageing sensor are disposed.

Further, in one embodiment of the invention, as it is shown in figure 5, processing module 30 can also include analogy signal processing unit 302 and AD conversion unit 303.Wherein, analogy signal processing unit 302 reads module 20 with sensitization data and is connected, and analogy signal processing unit 302 is for processing the normal sensitization data of photosensitive pixel and the intrinsic sensitization data of photosensitive pixel as analogue signal.AD conversion unit 303 is connected with analogy signal processing unit 302 and removal intrinsic noise unit 301 respectively, AD conversion unit 303 is for being converted to digital signal by the normal sensitization data of photosensitive pixel and the intrinsic sensitization data of photosensitive pixel of analogue signal, and then the normal sensitization data of the photosensitive pixel of digital signal is stored in a line among SRAM by removal intrinsic noise unit 301, and delay a line and read the normal sensitization data being stored in Nth row photosensitive pixel among SRAM, and then the normal sensitization data of the Nth row photosensitive pixel of reading is deducted intrinsic sensitization data to remove the intrinsic noise in normal sensitization data.

Owing to intrinsic sensitization data is the fixing static noise that sensitization data reads that the analog circuit in module 20 and imageing sensor produces, such as FPN, static point noise or static block distortion etc., these fixing static noises are to maintain constant between frame and frame, without along with the change of environment, the time of integration length change and change.Normal sensitization data comprises effective picture signal, fixing static noise and dynamic noise.And one moment of evening in reading moment reading moment compared with normal sensitization data of intrinsic sensitization data, therefore, remove after normal sensitization data is delayed a line by intrinsic noise unit 301 and deduct all intrinsic noises that intrinsic sensitization data can be removed in normal sensitization data, and retain the effective picture signal in normal sensitization data, thus very perfectly remain the details of the image of imageing sensor.

The device of the interframe intrinsic noise removing imageing sensor that the embodiment of the present invention proposes, the the first sensitization data sensing element read in module by sensitization data reads the normal sensitization data of Nth row photosensitive pixel in photosensitive pixel array in the n-th moment, Nth row photosensitive pixel is resetted by the second sensitization data sensing element in the (n+1)th moment, and read the intrinsic sensitization data of Nth row photosensitive pixel, and then processing module removes the intrinsic noise in the normal sensitization data of Nth row photosensitive pixel according to intrinsic sensitization data.The device of the interframe intrinsic noise of this removal imageing sensor can effectively remove the intrinsic noise of image interframe, and does not affect image detail, so that image is protected can hold the definition removed before intrinsic noise.

Additionally, further aspect of the present invention embodiment also proposed a kind of imageing sensor, this imageing sensor includes the device of the above-mentioned interframe intrinsic noise removing imageing sensor.

The imageing sensor that the embodiment of the present invention proposes, removes the intrinsic noise of image interframe, and does not affect image detail, so that image keeps removing the definition before intrinsic noise by removing the device of the interframe intrinsic noise of imageing sensor.

Describe in flow chart or in this any process described otherwise above or method and be construed as, represent and include the module of code of executable instruction of one or more step for realizing specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press order that is shown or that discuss, including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be understood by embodiments of the invention person of ordinary skill in the field.

Represent in flow charts or in this logic described otherwise above and/or step, such as, it is considered the sequencing list of executable instruction for realizing logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (such as computer based system, including the system of processor or other can from instruction execution system, device or equipment instruction fetch the system performing instruction), or use in conjunction with these instruction execution systems, device or equipment.For the purpose of this specification, " computer-readable medium " can be any can comprise, store, communicate, propagate or transmission procedure is for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium includes following: have the electrical connection section (electronic installation) of one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), read only memory (ROM), erasable edit read only memory (EPROM or flash memory), fiber device, and portable optic disk read only memory (CDROM).Additionally, computer-readable medium can even is that the paper that can print described program thereon or other suitable media, because can such as by paper or other media be carried out optical scanning, then carry out editing, interpreting or be processed to electronically obtain described program with other suitable methods if desired, be then stored in computer storage.

Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple steps or method can realize with the storage software or firmware in memory and by suitable instruction execution system execution.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic of logic gates for data signal realizes logic function, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc..

Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries can be by the hardware that program carrys out instruction relevant and complete, described program can be stored in a kind of computer-readable recording medium, this program upon execution, including the step one or a combination set of of embodiment of the method.

Additionally, each functional unit in each embodiment of the present invention can be integrated in a processing module, it is also possible to be that unit is individually physically present, it is also possible to two or more unit are integrated in a module.Above-mentioned integrated module both can adopt the form of hardware to realize, it would however also be possible to employ the form of software function module realizes.If described integrated module is using the form realization of software function module and as independent production marketing or use, it is also possible to be stored in a computer read/write memory medium.

Storage medium mentioned above can be read only memory, disk or CD etc..

In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.

Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can be carried out multiple change, amendment, replacement and modification without departing from the principles and spirit of the present invention, the scope of the invention and equivalency.

Claims (10)

1. the method for the interframe intrinsic noise removing imageing sensor, it is characterised in that comprise the following steps:
S1, n-th the moment read Nth row photosensitive pixel normal sensitization data, wherein, n and N is positive integer;
S2, in the (n+1)th moment, described Nth row photosensitive pixel is resetted, and read the intrinsic sensitization data of described Nth row photosensitive pixel;And
S3, according to described intrinsic sensitization data remove described Nth row photosensitive pixel described normal sensitization data in intrinsic noise.
2. the method for the interframe intrinsic noise removing imageing sensor as claimed in claim 1, it is characterised in that after the normal sensitization data of described reading Nth row photosensitive pixel, also include:
The normal sensitization data of described Nth row photosensitive pixel is stored in the Nth row among memorizer, and delays the normal sensitization data of a line described Nth row photosensitive pixel of reading.
3. the method for the interframe intrinsic noise removing imageing sensor as claimed in claim 2, it is characterised in that the described intrinsic noise removed in described normal sensitization data according to described intrinsic sensitization data specifically includes:
The normal sensitization data delaying the described Nth row photosensitive pixel that a line reads is deducted described intrinsic sensitization data to remove the intrinsic noise in described normal sensitization data.
4. the method for the interframe intrinsic noise removing imageing sensor as claimed in claim 3, it is characterised in that described memorizer is SRAM.
5. the method for the interframe intrinsic noise removing imageing sensor as claimed in claim 1, it is characterised in that also include:
Repeat described step S1-S3, until all row photosensitive pixels in described imageing sensor are disposed.
6. the device of the interframe intrinsic noise removing imageing sensor, it is characterised in that including:
Photosensitive pixel array, described photosensitive pixel array includes multirow photosensitive pixel;
Sensitization data reads module, described sensitization data reads module and is connected with described photosensitive pixel array, described sensitization data reads module and includes the first sensitization data sensing element and the second sensitization data sensing element, wherein, described first sensitization data sensing element for reading the normal sensitization data of Nth row photosensitive pixel in the n-th moment, described second sensitization data sensing element is for resetting to described Nth row photosensitive pixel in the (n+1)th moment, and read the intrinsic sensitization data of described Nth row photosensitive pixel, wherein, n and N is positive integer;And
Processing module, described processing module reads module with described sensitization data and is connected, and described processing module is for the intrinsic noise in the described normal sensitization data according to the described intrinsic sensitization data described Nth row photosensitive pixel of removal.
7. the device of the interframe intrinsic noise removing imageing sensor as claimed in claim 6, it is characterised in that described processing module includes:
Remove intrinsic noise unit, described removal intrinsic noise unit is for being stored in the Nth row among memorizer by the normal sensitization data of described Nth row photosensitive pixel, and delay a line and read the normal sensitization data of described Nth row photosensitive pixel, and deduct described intrinsic sensitization data to remove the intrinsic noise in described normal sensitization data by delaying the normal sensitization data of described Nth row photosensitive pixel that a line reads.
8. the device of the interframe intrinsic noise removing imageing sensor as claimed in claim 7, it is characterised in that described removal intrinsic noise unit is additionally operable to:
Intrinsic sensitization data according to other row photosensitive pixel removes the intrinsic noise in the normal sensitization data of other row photosensitive pixel described, until all row photosensitive pixels in described imageing sensor are disposed.
9. the device of the interframe intrinsic noise removing imageing sensor as claimed in claim 8, it is characterised in that described memorizer is SRAM.
10. an imageing sensor, it is characterised in that include the device of interframe intrinsic noise removing imageing sensor as according to any one of claim 6-9.
CN201410733685.0A 2014-12-04 2014-12-04 Imaging sensor and its method and apparatus for removing interframe intrinsic noise CN105721799B (en)

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