CN101674408B - Method for vibration compensation of shooting device - Google Patents

Method for vibration compensation of shooting device Download PDF

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CN101674408B
CN101674408B CN2008101491378A CN200810149137A CN101674408B CN 101674408 B CN101674408 B CN 101674408B CN 2008101491378 A CN2008101491378 A CN 2008101491378A CN 200810149137 A CN200810149137 A CN 200810149137A CN 101674408 B CN101674408 B CN 101674408B
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block
pixels
staggered
module
difference value
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CN101674408A (en
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高庄
杨朝雨
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Abstract

The invention relates to a method for the vibration compensation of a shooting device, which comprises the following steps: calculating each first pixel block in a benchmark field, a second pixel block corresponding to the first pixel block in a reference field and a difference value among other nearby pixel blocks in a comparison area sequentially; and selecting a combined image in an interleaving processing mode in three interleaving processing modes of forming image blocks by combining the first pixel block and the second pixel block or the other nearby pixel blocks or a duplicated first pixel block in a staggered mode and the like on the basis that the difference value is less than a preset value or not so as to compensate the factor of the vibration of the shooting device during image shooting and acquire clear images.

Description

The method for compensating vibration of camera
Technical field
The present invention relates to camera, the method for compensating vibration when especially relating to the camera photography.
Background technology
Digital camera, digital camera camera or any digital photographic device use any inductor such as optocoupler components (CCD), complementary metal oxide semiconductor (CMOS), infrared inductor, ultraviolet inductor or laser inductor etc. to obtain light intensity, calorific intensity, uitraviolet intensity or laser line strength, the data of then using the image processing sequential operation to obtain from optocoupler components, complementary metal oxide semiconductor or above-mentioned inductor etc. are to obtain static photograph or dynamic film.Digitized video is stored in DRAM (Dynamic Random Access Memory) (DRAM), synchronous dynamic access memory (SRAM) or other electronic memory.
The vibrations of digital photographic device are because of trembling of cameraman's hand and moving of mobile or digital photographic device, and it is caused that above-mentioned inductor of while etc. absorbs image.Digital photographic device is given a shock can produce fuzzy photograph or film when influencing, and therefore the cameraman can obtain ambiguous photograph or film.A firm tripod can guarantee the definition of photograph or film.But when the cameraman do not have tripod on hand the time, must make the digital photographic device that is provided with the image stabilization function reduce vibrations, just can take photograph or film clearly.
The various technology that make digital camera picked-up stable image are arranged, for example the digital image pick-up and the anti-shake method (DIGITAL IMAGECAPTURE DEVICE AND METHOD OF ANTI-SHAKE) of No. 200729938 announcement of Taiwan publication; Shock-absorbing structure of lens that the Taiwan publication discloses for No. 200726205 and the digital camera camera lens (LENSVIBRATION REDUCTION STRUCTURE AND DIGITAL CAMERA LENSTHEREWITH) of using it; The photographic means (CAMERA WITH ANTI-SHAKING DEVICE) of the anti-hand shake of the tool that the Taiwan publication discloses for No. 200638153 device; United States Patent (USP) the 7th, 161, the Image intake device (Image-capturingdevice with position detector for vibration reduction) that discloses for No. 621 with location aware device that damping uses; United States Patent (USP) the 7th, 164, the damping Zoom lens system (Vibration reduction zoom lenssystem) that the image stabilizing device (Image stabilization apparatus) of No. 531 announcements and United States Patent (USP) disclose for the 7th, 209, No. 299 etc.
The image stabilization technique is used in camera and camera lens.Traditional image stabilized camera device is to use small-sized free gyroscope to offset vibrations and produces clear photograph.This is a kind of mechanical means that reduces camera and camera lens vibrations.The expense height of this method.This gyroscopic volume occupies the confined space of camera.The sometimes still clear inadequately higher user that can't meet the demands of photograph that this kind camera is broken forth and.
Summary of the invention
The objective of the invention is in order to replace known shock-damping structure with digital video processing method, make digital photographic device absorb clearly photograph or film or make mobile device reach damping effect, and propose the method for compensating vibration of a kind of camera of the present invention.
The present invention is providing a kind of method for compensating vibration of camera, makes digital photographic device need not dispose shock-damping structure and can reduce manufacturing cost.
The present invention is providing a kind of method for compensating vibration of camera, makes digital photographic device reduce the required space of configuration shock-damping structure, and can absorb more stable image.
For reaching described purpose, the invention provides a kind of method for compensating vibration of camera, comprise the steps:
Calculate in each first block of pixels in the reference field and the reference field in regular turn and other of corresponding one second block of pixels of this first block of pixels and a comparison zone near difference value between the block of pixels;
According to this difference value whether less than a preset value, select a kind of staggered tupe in the staggered tupe to make up image, wherein staggered tupe comprises: make this first block of pixels and this second block of pixels staggeredly form an image block, make this first block of pixels with these other near staggered this first block of pixels forming an image block and this first block of pixels and one is duplicated of block of pixels composition one image block that interlocks; The wherein asynchronism(-nization) that is ingested of this first block of pixels and this second block of pixels;
This in regular turn calculation mode select staggered tupe for cooperating this, comprise the steps:
Calculate this first block of pixels of this reference field and one first difference value between corresponding this second block of pixels of this reference field in regular turn:
Relatively this first difference value and this preset value; If this first difference value less than this preset value, is sent to an output module after then staggered this first block of pixels and this second block of pixels are formed an image block; If this first difference value is not less than this preset value, then calculate in regular turn this first block of pixels with corresponding in the comparison zone of this second block of pixels these other near second difference value of block of pixels, follow relatively this second difference value and this preset value; If this second difference value is not less than this preset value, then judge whether to finish near the calculating of this second difference value between the block of pixels this first block of pixels and all these other, if do not finish, then continue in this first block of pixels and this comparison zone these other near between the block of pixels this second difference value calculating and with the comparison step of this preset value, if finish and all these second difference value all are not less than this preset value, then duplicate this first block of pixels, be sent to this output module after then staggered two these first block of pixels are formed an imagery zone; If this second difference value less than this preset value, is sent to this output module after then staggered this first block of pixels and near these other block of pixels are formed an image block;
Judge whether to finish the combination of all block of pixels of this reference field; If do not finish the combination of all block of pixels of this reference field, then continue the combination operation of above-mentioned steps up to all block of pixels of finishing this reference field.
The present invention makes digital photographic device need not dispose shock-damping structure and can reduce manufacturing cost, and makes digital photographic device reduce the required space of configuration shock-damping structure, and can absorb more stable image.
Description of drawings
Figure 1A is divided into the schematic diagram of reference field and reference field for the image that will take.
Figure 1B is divided into another schematic diagram of reference field and reference field for the image that will take.
Fig. 2 is for implementing functional structure calcspar of the present invention.
Fig. 3 is for implementing flow chart of the present invention.
Embodiment
Other purposes of the present invention, effect see also drawings and Examples, are described in detail as follows.
See also shown in Figure 1A, the 1B.Generally can utilize the picked-up images 10 such as optocoupler components, complementary metal oxide semiconductor or above-mentioned inductor of digital photographic device.These digitized video pixels be defined as (W, H), wherein W is output digitized video pixel wide, H is output digitized video pixels tall, can be distinguished into 0,1,2,3,4 from top to bottom, strip pixel such as 5...H-1.During digital photographic device picked-up image 10, from top to bottom continous way absorb 0,1,2,3,4 in regular turn, the image data of strip pixel such as 5...H-1.
The present invention forms even field (Even field) for the image data of strip pixels such as the elder generation of compartment absorbs 0,2 in regular turn, 4...H-1 or H-2, or be decided to be reference field 100, about 60 minutes 1 second or be greater than or less than 60 minutes 1 second after again compartment absorb 1,3 in regular turn, the image of strip pixels such as 5...H-1 or H-2 forms odd field (Odd field), or be decided to be reference field 101, staggered again reference field 100 and reference field 101 are formed image 10, shown in Figure 1A.Or the image of striped blocks such as the elder generation of compartment absorbs 1,3 in regular turn, 5...H-1 or H-2 is formed odd field (Odd field), or be decided to be reference field 100 ', about 60 minutes 1 second or be greater than or less than 60 minutes 1 second after again compartment absorb 0,2 in regular turn, the image data of striped blocks such as 4...H-1 or H-2 forms even field (Even field), or be decided to be reference field 101 ', staggered again reference field and reference field are formed image, shown in Figure 1B.
Can with reference field 100,100 ' and reference field 101,101 ' be divided into the block of pixels 102,103,102 ', 103 ' and in reference field 101,101 ', set comparison regional 104,104 ' of a plurality of opposite positions, size respectively.Block of pixels 102,103,102 ', 103 ' is the block of identical size, and block of pixels 103,103 ' is contained in or equals comparison zone 104,104 ', and block of pixels 103,103 ' is not necessarily identical in the original position of reference field with block of pixels 102,102 ' in the original position of reference field.
Block of pixels 102,103 magnitude range may be defined as (Bw, Bh), Bw is the block of pixels width, Bh is the block of pixel height.Bw and Bh can be combination in any in a block, and Bw≤W, Bh≤H.Block of pixels 102,103 can have different block of pixels respectively, as 64X64 block of pixels, 128X64 block of pixels.Comparison zone 104 is in reference field 101.Comparison zone 104 may be defined as (Rw, Rh), Rw is the pixel wide in comparison zone, Rh is the pixels tall in comparison zone.Rw and Rh can be combination in any in a comparison zone, and Bw≤Rw≤W, Bh≤Rh≤H.Comparison zone 104 can have the different pixels piece respectively, as 128X128 block of pixels, 256X128 block of pixels.About 60 minutes 1 second of the time phase difference that two-phase respective pixel block 102,103 is ingested or be greater than or less than 60 minutes 1 second; If the antipode value between two block of pixels 102,103, can make two block of pixels, 102,103 interleaved set synthetic image block clearly less than a preset value; The antipode value (Sum of absolute dfference, SAD) or square difference value (Sum of squared difference, SSD) in order to calculate the difference between the different pixels piece, an antipode value and a square difference value can be described as difference value.When if difference value is not less than this preset value, can be further in regional 104 scopes of comparison, calculate respectively adjacent with block of pixels 103 or near other of other identical sizes near difference value between block of pixels and the block of pixels 102, if a certain difference value, can make near the synthetic image block of a certain other the block of pixels interleaved set of block of pixels 102 and this less than this preset value; If all difference value when all being not less than this preset value, represent this block of pixels 102 can't with the synthetic image block of the block of pixels interleaved set of reference field 101, so two identical block of pixels 102 interleaved set have to be synthesized image blocks.
Via above-mentioned by reference field 100, for example even field or odd field are from left to right, calculate each block of pixels from top to bottom, for example block of pixels 102, with reference field 101, for example corresponding block of pixels of odd field or even field, for example difference value between the block of pixels 103, can compensate the factor of the vibrations of camera when the filmed image 100 again via above-mentioned staggered tupe, and obtain image clearly.
See also shown in Figure 2.Form a specific embodiment of an image block in the method for compensating vibration of camera of the present invention, comprise the steps:
By block of pixels to one first data transmission channel (First Data pipe) 13 of an input module 11 (Input module) transmission one reference field, then transmit block of pixels to one second data transmission channel (Second Data pipe) 14 of a reference field;
Select control module (Fetch control module) 12 control first data transmission channel 13 and second data transmission channels 14 by one, make one second block of pixels corresponding to first block of pixels in first block of pixels of 1 in the reference field (Block ofpixels) and the reference field transfer to a difference module (Sum of difference module respectively in regular turn, SDM) 15 for example an antipode module (Sum of absolute difference module, SADM), a staggered module 16 and duplicates staggered module 17; (Sum of squaredifference module SSDM) waits other difference module to replace to the also available square difference module of antipode module wherein;
By the difference value (S) between difference module 15 calculating first block of pixels and second block of pixels; This difference value (S) can be difference value such as antipode value or square difference value.
By a comparator (Comparator) 18 relatively this difference value (S) and a preset value (A); If S less than A, then exports the first information, and stops comparison; If S is not less than A, then export second information, representing needs further contrast between block of pixels near in the comparison zone of first block of pixels and reference field other, and then select control module 12 to detect and learn when comparator 18 is exported second information, promptly control second data transmission channel 14 and be transmitted near interior other block of pixels in this comparison zone in regular turn to antipode module 15, staggered module 16 and duplicate staggered module 17, then by difference module 15 calculate in regular turn this first block of pixels and these other near difference value (S1) between the block of pixels, then compare S1 and A in regular turn by comparator 18, if S1 then exports the first information less than A, and stop comparison; If all S1 all are not less than A, then export the 3rd information, represent first block of pixels and these other near can't contrast during block of pixels, and can't by this staggered first block of pixels and these other near block of pixels obtain compensation;
When learning the comparator 18 output first information by the processor of merit more than (MUX) 19 detections, the image block of staggered second block of pixels of first block of pixels of staggered module 16 outputs of i.e. control or first block of pixels staggered these other near the image block of block of pixels, be sent to an output module (Output module) 22 via a first-in first-out buffer (FIFO) 21; When if many merits processor 19 detects the 3rd information of learning comparator 18 outputs, i.e. the staggered image block of two first block of pixels that staggered module 17 outputs are duplicated in control is sent to output module 22 via this first-in first-out buffer 21.
Duplicating staggered module 17 is to duplicate this first block of pixels earlier, and staggered again this two first block of pixels forms an image block.Duplicate staggered module 17 and also can comprise staggered module 16, utilize staggered module 16 staggered these two first block of pixels to form an image block.
The reference field of present embodiment and reference field can be respectively even field and odd field or be respectively odd field and even field.
See also shown in Fig. 2,3.The embodiment of the method for compensating vibration of camera of the present invention comprises the steps:
Calculate first block of pixels of a reference field and one first difference value (S) (31) of corresponding second block of pixels of a reference field by an antipode module 15:
By a comparator 18 relatively this first difference value (S) and a preset value (A) (32);
If reach an output module 22 (33) after S less than A, then forms an image block by staggered module 16 staggered first block of pixels and second block of pixels;
If S is not less than A, then calculate near second difference value (S1) (34) of the interior block of pixels other in the comparison zone that comprises this second block of pixels in first block of pixels and the reference field in regular turn by difference module 15;
By comparator 18 relatively this second difference value (S1) and this preset value (A) (35);
If S1 is not less than A, then judge whether to finish the calculating (36) of the S1 between near the every other block of pixels in first block of pixels and the comparison zone, if do not finish, then continue above-mentioned first block of pixels and these other near between the block of pixels S1 calculating and with the comparison step of A, if finish and all S1 all are not less than A, then duplicate and be sent to output module 22 (37) after this first block of pixels and staggered two first block of pixels are formed an image block by backed stamper interleaved set 17;
If S1 is less than A, then by staggered module 16 interlock first block of pixels and these other near block of pixels be sent to output module 22 (38) after forming an image block;
By selecting control module 12 to judge whether to finish the combination (39) of all block of pixels in the reference field;
If do not finish the combination of the block of pixels of wanting of reference field, then enter above-mentioned by the step (31) of antipode module 15 next first block of pixels of calculating with another first difference value of next second block of pixels in the contrast district;
If finished the combination of the block of pixels of wanting of reference field, (40) then stop operation.
The reference field of present embodiment and reference field can be respectively even field and odd field or be respectively odd field and even field.
The present invention via calculate in regular turn in the reference field each first block of pixels and a reference field in and near the difference value between the block of pixels in corresponding second block of pixels of this first block of pixels and the comparison zone other; And according to this difference value whether less than a preset value, selection make this first block of pixels and this second block of pixels staggeredly form an image block, make this first block of pixels with these other near interlock a kind of staggered processing mode combinations image in the staggered tupe such as composition one image block of staggered this first block of pixels forming an image block and this first block of pixels and one is duplicated of block of pixels, can compensate the factor of the vibrations of camera when filmed image, and obtain image clearly.
The above record only for utilizing the embodiment of the technology of the present invention content, anyly is familiar with this skill person and used the present invention to modify for it, change, and all belongs to the claim scope that the present invention advocates, and is not limited to the content that embodiment discloses.

Claims (11)

1. the method for compensating vibration of a camera comprises the steps:
Calculate in each first block of pixels in the reference field and the reference field in regular turn and other of corresponding one second block of pixels of this first block of pixels and a comparison zone near difference value between the block of pixels;
According to this difference value whether less than a preset value, select a kind of staggered tupe in the staggered tupe to make up image, wherein staggered tupe comprises: make this first block of pixels and this second block of pixels staggeredly form an image block, make this first block of pixels with these other near staggered this first block of pixels forming an image block and this first block of pixels and one is duplicated of block of pixels composition one image block that interlocks;
The wherein asynchronism(-nization) that is ingested of this first block of pixels and this second block of pixels;
This in regular turn calculation mode select staggered tupe for cooperating this, comprise the steps:
Calculate this first block of pixels of this reference field and one first difference value between corresponding this second block of pixels of this reference field in regular turn:
Relatively this first difference value and this preset value; If this first difference value less than this preset value, is sent to an output module after then staggered this first block of pixels and this second block of pixels are formed an image block; If this first difference value is not less than this preset value, then calculate in regular turn this first block of pixels with corresponding in the comparison zone of this second block of pixels these other near second difference value of block of pixels, follow relatively this second difference value and this preset value; If this second difference value is not less than this preset value, then judge whether to finish near the calculating of this second difference value between the block of pixels this first block of pixels and all these other, if do not finish, then continue in this first block of pixels and this comparison zone these other near between the block of pixels this second difference value calculating and with the comparison step of this preset value, if finish and all these second difference value all are not less than this preset value, then duplicate this first block of pixels, be sent to this output module after then staggered two these first block of pixels are formed an imagery zone; If this second difference value less than this preset value, is sent to this output module after then staggered this first block of pixels and near these other block of pixels are formed an image block;
Judge whether to finish the combination of all block of pixels of this reference field; If do not finish the combination of all block of pixels of this reference field, then continue the combination operation of above-mentioned steps up to all block of pixels of finishing this reference field.
2. the method for compensating vibration of camera as claimed in claim 1 is characterized in that, the size of described difference value is to carry out to calculate by a difference module to obtain.
3. the method for compensating vibration of camera as claimed in claim 2 is characterized in that, described difference value and this preset value relatively be to carry out relatively by a comparator.
4. the method for compensating vibration of camera as claimed in claim 3 is characterized in that, if this first difference value less than this preset value, is then formed this image block by staggered this first block of pixels of staggered module and this second block of pixels; If this second difference value is less than this preset value, then by staggered this first block of pixels of this staggered module and these other near block of pixels form this image block.
5. the method for compensating vibration of camera as claimed in claim 4 is characterized in that, duplicates this first block of pixels, and the operation that then staggered two these first block of pixels are formed an image block is that to duplicate staggered module by one complete.
6. the method for compensating vibration of camera as claimed in claim 5 is characterized in that, this first block of pixels is to select control module to control that one first data transmission channel transfers to this difference module, this staggered module and this duplicates staggered module by one; This second block of pixels and these other near block of pixels be to control by this selection control module that one second data transmission channel transfers to this difference module, this staggered module and this duplicates staggered module.
7. the method for compensating vibration of camera as claimed in claim 6 is characterized in that, if this first difference value during less than this preset value this comparator export a first information; If this second difference value during less than this preset value this comparator export a first information; If this comparator was exported one second information when this first difference value was not less than this preset value; If this comparator was exported one second information when this second difference value was not less than this preset value; If this comparator was exported one the 3rd information when all these second difference value all were not less than this preset value; The processor of merit more than detects and learns when this comparator is exported this first information, and this image block of promptly controlling this staggered module output is sent to this output module via a first-in first-out buffer; This selection control module detects and learns when this comparator is exported this second information, promptly control this second data transmission channel by this output module transmit respectively these other near block of pixels to this difference module, this staggered module and this duplicate staggered module; If this many merits processor detects and learns when this comparator is exported the 3rd information, promptly control this this image block that duplicates staggered module output and be sent to this output module via this first-in first-out buffer.
8. the method for compensating vibration of camera as claimed in claim 7 is characterized in that, this reference field and this reference field are respectively an even field and an odd field.
9. the method for compensating vibration of camera as claimed in claim 7 is characterized in that, this reference field and this reference field are respectively an odd field and an even field.
10. the method for compensating vibration of camera as claimed in claim 7 is characterized in that, this difference module is one of in antipode module or square difference module.
11. the method for compensating vibration of camera as claimed in claim 7 is characterized in that, this difference value is one of in antipode value or square difference value.
CN2008101491378A 2008-09-12 2008-09-12 Method for vibration compensation of shooting device Expired - Fee Related CN101674408B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1082292A (en) * 1992-06-09 1994-02-16 索尼公司 Video signal processing apparatus
US7161621B2 (en) * 2001-01-09 2007-01-09 Nikon Corporation Image-capturing device with position detector for vibration reduction
US7164531B2 (en) * 2002-06-13 2007-01-16 Nikon Vision Co., Ltd. Image stabilization apparatus
US7209299B2 (en) * 2002-12-27 2007-04-24 Nikon Corporation Vibration reduction zoom lens system
CN1992812A (en) * 2005-12-27 2007-07-04 联咏科技股份有限公司 Video vibration-compensated device and method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1082292A (en) * 1992-06-09 1994-02-16 索尼公司 Video signal processing apparatus
US7161621B2 (en) * 2001-01-09 2007-01-09 Nikon Corporation Image-capturing device with position detector for vibration reduction
US7164531B2 (en) * 2002-06-13 2007-01-16 Nikon Vision Co., Ltd. Image stabilization apparatus
US7209299B2 (en) * 2002-12-27 2007-04-24 Nikon Corporation Vibration reduction zoom lens system
CN1992812A (en) * 2005-12-27 2007-07-04 联咏科技股份有限公司 Video vibration-compensated device and method thereof

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