CN101227606B - Apparatus and method for eliminating video decipher reestablishment image streaking - Google Patents
Apparatus and method for eliminating video decipher reestablishment image streaking Download PDFInfo
- Publication number
- CN101227606B CN101227606B CN 200710003620 CN200710003620A CN101227606B CN 101227606 B CN101227606 B CN 101227606B CN 200710003620 CN200710003620 CN 200710003620 CN 200710003620 A CN200710003620 A CN 200710003620A CN 101227606 B CN101227606 B CN 101227606B
- Authority
- CN
- China
- Prior art keywords
- motion vector
- image block
- image
- predetermined value
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention discloses a method for eliminating reconstructed image trailing smear of video decoding, which comprises the following steps: an image-detecting step which detects a motion complexor of one or a plurality of image modules when foreground moves to left, to right, to upward or to downward, an analysis and comparing step which analyzes the detecting consequences in the image-detecting step and compares the detecting consequence with the predetermined value, and a step for refreshing intra-frame coding module which executes the refresh of the intra-frame coding module when the processing result in the analysis and comparing step satisfies the predetermined condition. Furthermore, the invention further discloses a device for eliminating reconstructed image trailing smear of video decoding. Image trailing smears and the particle residue effect can be effectively and reliably eliminated under condition of a smaller altering and operand through adopting the invention.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of method and apparatus of eliminating video decipher reestablishment image streaking.
Background technology
In video encoding-decoding process, the quantification in the transform domain can cause and occur non-natural imaging effect in the reconstructed image.Wherein, the quantizing distortion meeting of direct current or lower frequency conversion coefficient causes blocking artifact, that is, and and the image waveform that presents along the image block grid discontinuous; Upper frequency conversion coefficient distortion meeting causes annular effect, that is, and and the smear at the sharp-pointed vibrational waveform at the edge that in rest image, presents and the edge that in the image of playing continuously, presents and residual.This class localized distortion or appearance regularly, or appear at subjective area-of-interest, be easy to be discovered by human eye, had a strong impact on the subjective quality of reconstructed image.In H.264, can on static background, stay tangible smear and particle residue to personage's prospect edge of such picture quality decline-motion in the field observation of real-time video coding and transmission, and when code check lower (being lower than 768kbps), when the colour contrast of sport foreground and static background was big simultaneously, the prospect edge that stays on background was residual especially obvious.
A kind of method of this smear of existing elimination and particle residue effect is the filtering of decyclization shape effect.Yet the filtering of decyclization shape effect is not defined as loop filtering (existing video encoding standard is filtered into loop filtering as H.264 only defining deblocking effect) by existing video encoding standard, can only be used as reprocessing, therefore greatly reduce the practicality and the effect of deblocking effect filtering.Because under the situation of the relevant information that does not have raw image data and the transmitting terminal that can utilize raw image data to provide, the impossible entirely true differentiation true picture details of receiving terminal and caused smear of coded quantization distortion and particle residue effect, so the decyclization shape effect filtering of finishing as reprocessing at receiving terminal will inevitably make image detail fuzzy, and the picture quality can not guarantee with the product intercommunication of other manufacturer the time.
Find in test, if in H.264 estimation and model selection, adopt the Hadamard conversion, image streaking and residual effect are disappeared, but, because the excessive image computing more clearly that becomes that makes has been introduced in the Hadamard conversion, cause its coding can not reach the desired speed of real-time application, therefore can not reach good practicality.
The algorithm of the elimination annular effect in the correlation technique only all belongs to need do the measure that indivedual changes just can improve topography's subjective quality decline at encoder.How many these class methods regulate the macro block quantified precision according to what each macro block in the image contained sharpened edge respectively,, calculate the edge strength of each macro block that is.If macroblock edges intensity is in higher level at present frame, then the QP value is subtracted one; If be in reduced levels, then the QP value is added one; If the level of mediating, then the QP value is constant.In theory, the method in the correlation technique can improve the definition of image border and profile, thereby alleviates near the halation result the image border.But in fact, but do not produce Expected Results after the employing.Its reason is, and is little to the influence of coding result and picture quality when one or two unit of QP value change, the therefore quantizing distortion that can not effectively alleviate the upper frequency conversion coefficient; When the change of QP value is excessive, can influences the execution of rate control algorithm again, thereby the result of supersign word and image quality decrease occur.
According to field observation, the position that presents smear and particle residue is that first passive movement prospect covers the static background zone that then reveals again.Belong to the interframe block zone that it fails to match herein.Be that the motion compensation interframe prediction residual is relatively large.So-called relatively large, it is bigger than the prediction residual in adjacent interframe block the match is successful zone to be exactly these regional prediction residual, but in whole two field picture again less than containing more compound movement and the interframe block of complex texture it fails to match regional prediction residual more.
Such image-region belongs to the zone that is blocked.The theory and technology that provides the definition of blocking and associated picture to detect in the correlation technique.For this reason, introduce series of concepts such as optical flow field and optical flow equation and Mathematical Modeling the image detection problem is discussed.Block the covering that refers to a surface or appear problem.It is owing to the three-dimensional rotation and the translation of the object that only occupies part observation field are caused.Its essence is the situation that optical flow equation does not have separating, exists a plurality of morbid state to separate.As shown in Figure 1, the object of representing with solid line from moment t to t ' along the translation of x direction.The image of t is k constantly, and the image of t ' is k+1 constantly.Dashed region in the k two field picture is illustrated in the background that is capped in the k+1 two field picture.This means the correspondence position that in the k+1 two field picture, can not find pixel in these dashed region.Dashed region in the k+1 two field picture shows the background that manifests owing to object of which movement, does not have the correspondence position of pixel in these dashed region in the k two field picture.
Can be based on the image detection theory of optical flow field and optical flow equation to adopting block matching method to carry out following qualitative analysis based on translational motion model based on H.261 conventional video coding:
If object does not have and blocks in the scene, there is relation one to one in pixel on time domain so.In case object is blocked, will destroy this one-to-one relationship of pixel in interframe.As shown in Figures 2 and 3, prospect is (or to the right) motion to the right, corresponding respectively two the reference frame image pieces that overlap each other of two adjacent image block # 1 of present frame and #2, promptly, the corresponding same pixel of the moment in the past of two different pixels of current time, explanation is for image block # 2, and past frame can not provide corresponding with it suitable image block, thus the #2 piece be exactly in the past frame be capped and in zone that present frame appears again.Otherwise as shown in Figure 4, two the reference frame image pieces corresponding respectively with two of present frame adjacent image blocks are separated from each other.If confirm that fully a certain reference frame image zone can not be corresponding with any current frame image zone, then this reference frame regions be exactly in the past frame appear and in zone that present frame is capped
Therefore, by above description as can be seen, so that release qualified products, press for and a kind ofly only do the just effective method of removal of images smear and particle residue effect of indivedual changes at encoder for the reconstructed image quality that improves real-time coding.
Summary of the invention
Consider the problems referred to above and make the present invention, major programme of the present invention is to improve the caused local subjective picture quality decline of coded quantization distortion by other change part of encoder-side, individual, just eliminates the sport foreground edge stays on static background in the decipher reestablishment image smear and particle residue effect.
Main purpose of the present invention provides a kind of method and apparatus of eliminating video decipher reestablishment image streaking.
According to one embodiment of present invention, provide a kind of method of eliminating video decipher reestablishment image streaking.
This method may further comprise the steps: the image detection step, detect when prospect left or to the right or make progress or when moving downward the motion vector of one or more image blocks; Analyze comparison step, the testing result of analysis in the image detection step, and itself and predetermined value compared, wherein, described analysis comparison step comprises following processing: the present frame adjacent block motion vector in more described one or more image blocks, and the overlapping degree and the predetermined value of described present frame adjacent block corresponding reference two field picture piece compared; And the intra-frame encoding mode refresh step, when the result in analyzing comparison step satisfied predetermined condition, the intra-frame encoding mode of carrying out described present frame adjacent block refreshed;
Wherein, when prospect was moved left, predetermined condition was: the horizontal component of the motion vector of second image block is less than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
When prospect moved right, predetermined condition was: the horizontal component of the motion vector of first image block is greater than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
When prospect moved upward, predetermined condition was that the vertical component of the motion vector of first image block is greater than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value; And
When prospect moved downward, predetermined condition was that the vertical component of the motion vector of second image block is less than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value.
In above-mentioned four kinds of situations, according to the one or more predetermined values that are provided with in the following factor: image block size, motion vector precision, based on the distortion performance of the existing limitation of block matching motion algorithm for estimating of translation mobility model and error, macroblock coding, eliminate the effect of smear.And, be that predetermined value is 16 under the situation of 16x8 and 8x16,1/4 pixel precision motion vector when image block.
According to another embodiment of the invention, provide the device of eliminating video decipher reestablishment image streaking.
This device comprises: image detection module, detect when prospect left or to the right or make progress or when moving downward the motion vector of one or more image blocks; Analyze comparison module, be used to analyze the testing result that detects by image detection module, and itself and predetermined value compared, wherein, described analysis comparison module is used for the present frame adjacent block motion vector of more described one or more image blocks, and the overlapping degree and the predetermined value of described present frame adjacent block corresponding reference two field picture piece compared; And the intra-frame encoding mode refresh module, being used for when the result of analyzing comparison module satisfies predetermined condition, the intra-frame encoding mode of carrying out described present frame adjacent block refreshes;
Wherein, when prospect was moved left, predetermined condition was: the horizontal component of the motion vector of second image block is less than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
When prospect moved right, predetermined condition was: the horizontal component of the motion vector of first image block is greater than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
When prospect moved upward, predetermined condition was that the vertical component of the motion vector of first image block is greater than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value;
And when prospect moved downward, predetermined condition was that the vertical component of the motion vector of second image block is less than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value.
And, this device further comprises: predetermined value is provided with module, is used for the one or more predetermined values that are provided with according to following factor: image block size, motion vector precision, based on the distortion performance of the existing limitation of block matching motion algorithm for estimating of translation mobility model and error, macroblock coding, eliminate the effect of smear; Wherein, predetermined value is used to weigh the overlapping degree of two corresponding reference frame image pieces.
By technique scheme of the present invention, can only carry out under the situation of less change and operand, reliably and effectively removal of images smear and particle residue effect.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram that background is capped and appears;
Fig. 2 is the schematic diagram that the covering background of exposing when prospect moves right is shown;
Fig. 3 is the schematic diagram that the covering background of exposing when prospect is moved to the left is shown;
Fig. 4 is the schematic diagram that the background that is capped is shown;
Fig. 5 is the flow chart according to the method for the elimination video decipher reestablishment image streaking of first embodiment of the invention;
Fig. 6 is the schematic diagram of the background that just manifested in the motion vector of two squares of more same 16x16 interior macroblocks and the detected image; And
Fig. 7 is the block diagram of forming according to the elimination video decipher reestablishment image streaking device of second embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
First embodiment
At first the first embodiment of the present invention is described with reference to Fig. 2 to Fig. 6.Fig. 2 is the schematic diagram that the covering background of exposing when prospect moves right is shown, Fig. 3 is the schematic diagram that the covering background of exposing when prospect is moved to the left is shown, Fig. 4 is the schematic diagram that the background that is capped is shown, Fig. 5 is the flow chart according to the method for the elimination video decipher reestablishment image streaking of first embodiment of the invention, and Fig. 6 is the schematic diagram of the background that just manifested in the motion vector of two squares of more same 16x16 interior macroblocks and the detected image.
The description that to summarize main thought of the present invention at first.
Be appreciated that by existing technology intra-frame encoding mode can alleviate the quantizing distortion of upper frequency conversion coefficient.Under intra-frame encoding mode (back is called the Intra pattern), energy mainly is distributed in direct current and than low frequency end, the energy that is distributed in upper frequency is far below the energy that is distributed in same frequency under the interframe encoding mode (back is called the Inter pattern) that has the motion compensation interframe prediction.Blocking artifact can appear in direct current and more serious than the distortion of low frequency transform coefficient under the Intra pattern; And the distortion of upper frequency conversion coefficient is more serious under the Inter pattern, the smear at annular effect and sport foreground edge can occur.The Inter pattern has impayable advantage for the Intra pattern on compression ratio.Therefore adopt the Inter pattern to obtain high compression ratio in picture frame one-level and 16x16 image block (being called macro block) one-level, that is as far as possible, and P frame and Inter macro block.Only when initial time (comprising that the absolute initial time of sequence and incision are constantly) and needs are corrected or dealt with transmission error, use I frame (coding mode of picture frame one-level is Intra), interframe block when it fails to match with need topography's off resonance correction or use Intra macro block (coding mode of macro block one-level is Intra) when refreshing.The coding mode in image local zone is changed into Intra from Inter, Energy distribution is changed, the quantizing distortion of the higher frequency coefficients that forms by identical quantizer is alleviated, and subjective picture quality is improved, and distortion performance that accordingly should the zone may descend.
The key that the above-mentioned Intra of utilization refreshes the method that alleviates higher frequency coefficients quantizing distortion is " carrying out appropriate change in appropriate place ".Otherwise cause that code word is uprushed, local distortion performance sharp fall.One of key point is the place that detects the more serious higher frequency coefficients quantizing distortion of existence.
Overlapping with two reference frame image pieces that two present frame adjacent blocks are corresponding respectively, be the necessary and sufficient condition that the background that once was capped reveals; Two image blocks like this stagger, and are the necessary condition that background is capped.Present frame adjacent block motion vector relatively just can be found that corresponding reference two field picture piece is whether overlapping or staggers.The difference of motion vector is big more, and degree overlapping or that stagger is big more, and actual or possible occlusion area is also big more.Therefore to need detection Fig. 2 of carrying out and the displaying background among Fig. 3 simpler than detecting covering background among Fig. 4 in order to eliminate smear, conveniently.Above qualitative analysis is compared with separating optical flow equation, and principle is identical, and unanimity is still more directly perceived, easier as a result.
Cover the image block that then reveals again in case detect first passive movement prospect, consider to force Intra to refresh and needn't comprehend herein that the coding mode of distortion performance the best is Inter or Intra with regard to needs.The scope that Intra refreshes is the another one key point that alleviates higher frequency coefficients quantizing distortion.H.264, nearly 7 kinds of motion compensation square-16x16 are provided, 16x8,8x16,8x8,8x4,4x8,4x4, highly beneficial to improving the precision and the degree of reliability that detect displaying background.On the other hand, H.264 the version of Ding Gaoing only provides 16x16 macro block Intra pattern at last,, do not limited by Intra and refreshed the effect of eliminating smear less than the Intra refresh mode (H.26L the version before the JM2 comprises the inferior macro block Intra of 8x8 pattern) of 16x16 piece.This restriction is: if the Intra that the displaying background of small size is carried out 16x16 refreshes, can make code word overhead excessive; Do not refresh and smear then occurs, show as and on solid background, present the foreground particle.Therefore, require the prudent 16x16 of use macro block Intra to refresh.
In order to realize above-mentioned solution, present embodiment provides a kind of method of eliminating video decipher reestablishment image streaking.
As shown in Figure 5, this method may further comprise the steps: image detection step S502, the detection prospect left, to the right, upwards or when moving downward, the motion vector of one or more image blocks; Analyze comparison step S504, analyze the testing result in the image detection step, and itself and predetermined value are compared; And intra-frame encoding mode refresh step S506, when the result in analyzing comparison step satisfies predetermined condition, carry out intra-frame encoding mode and refresh.
Wherein, when prospect was moved left, predetermined condition was: the horizontal component of the motion vector of second image block is less than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
When prospect moved right, predetermined condition was: the horizontal component of the motion vector of first image block is greater than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
When prospect moved upward, predetermined condition was that the vertical component of the motion vector of first image block is greater than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value; And
When prospect moved downward, predetermined condition was that the vertical component of the motion vector of second image block is less than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value.
In above-mentioned four kinds of situations, according to the one or more predetermined values that are provided with in the following factor: image block size, motion vector precision, based on the distortion performance of the existing limitation of block matching motion algorithm for estimating of translation mobility model and error, macroblock coding, eliminate the effect of smear.And, be that predetermined value is 16 under the situation of 16x8 and 8x16,1/4 pixel precision motion vector when image block.
To select for use below with the coupling of existing H.264 cataloged procedure closely, change less, accuracy of detection and the degree of reliability is higher, the example of the implementation method of distortion performance and effect optimum is described the first embodiment of the present invention.
Its concrete execution with described method is similar before, comprise: carry out according to the original order of (temporarily having only 16x8 piece and 8x16 piece) from bulk (16x16 piece) to smaller piece that the Inter pattern is attempted and the Inter cost is selected, wherein the displaying background that when finishing the 16x8 pattern and attempt, has or not prospect to move both vertically to cause by the vertical component detection of the motion vector of two 16x8 pieces of interior macroblocks relatively; Then, the 8x16 pattern of carrying out is as shown in Figure 6 attempted, detect the displaying background that has or not the prospect horizontal movement to cause by the horizontal component of the motion vector of two 8x16 pieces of interior macroblocks relatively after finishing, if the displaying background that area of discovery is bigger, the overlapping degree of just finding corresponding reference two field picture piece is just carried out and is forced Intra to refresh greater than a predefined empirical value.
To being described below of this example detailed process.As shown in Figures 2 and 3, suppose the motion vector of left side 8x16 piece # 1
The motion vector of the right 8x16 piece # 2
Mv1 wherein
xAnd mv2
xBe the horizontal component of motion vector, mv1
xAnd mv2
xIt is the vertical component of motion vector.
(1) detects the kinetic displaying background of prospect (as shown in Figure 2) left
If mv2
x＜0 and mv1
x-mv2
x〉=Δ mv enough large-area prospect occurs and causes displaying background to left movement, needs to execute the Intra macro block updating; Otherwise, do not need to carry out pressure Intra macro block updating.
Top Δ mv is an empirical value of weighing two corresponding reference frame image piece overlapping degrees.
(2) detect prospect and move right caused displaying background (as shown in Figure 3)
If mv1
x0 and mv1
x-mv2
x〉=Δ mv enough large-area prospect occurs and moves right and cause displaying background, needs to execute the Intra macro block updating; Otherwise, do not need to carry out pressure Intra macro block updating.
In like manner can derive the move both vertically process of the displaying background that causes of detection prospect.In Fig. 2 (a), suppose the motion vector of top 16x8 piece # 1
The motion vector of following 16x8 piece # 2
(3) with it similarly, the prospect of the detecting caused displaying background that moves upward
If mv1
y0 and mv1
y-mv2
y〉=Δ mv enough large-area prospect occurs and moves upward and cause displaying background, needs to execute the Intra macro block updating; Otherwise, do not need to carry out pressure Intra macro block updating.
(4) detect prospect and move downward caused displaying background
If mv2
y＜0 and mv1
y-mv2
y〉=Δ mv enough large-area prospect occurs and moves downward and cause displaying background, needs to execute the Intra macro block updating; Otherwise, do not need to carry out pressure Intra macro block updating.
The setting of Δ mv is crucial in the process in the above.Need consider image block size, motion vector precision during setting, based on the distortion performance of the existing limitation of block matching motion algorithm for estimating of translational motion model and error (especially having used the fast motion estimation algorithm), macroblock coding, eliminate the effect of smear.If Δ mv is less than normal, will occur also carrying out the Intra macro block updating for the displaying background of small size very, code word overhead is excessive; If Δ mv too small (approaching zero), the limitation of motion vector itself and error can be covered real displaying background, and consequence is even more serious; If Δ mv is bigger than normal, then smear is eliminated not thoroughly.One of them application example is: be under the situation of 16x8 and 8x16,1/4 pixel precision motion vector at image block, set Δ mv=16, be equivalent to whole pixel grid top offset 4 lattice.
The program code of this example is as follows:
If mv1
y-mv2
y〉=16, just putting macro block mode is Intra, is added on after the 16x8 pattern attempts;
If mv1
x-mv2
x〉=16, just putting macro block mode is Intra, is added on after the 8x16 pattern attempts.
Second embodiment
With reference to Fig. 7 the second embodiment of the present invention is described below.Fig. 7 illustrates the block diagram of forming according to the elimination video decipher reestablishment image streaking device 700 of second embodiment of the invention.
As shown in Figure 7, this device comprises: image detection module 702, detection prospect left, to the right, the motion vector of one or more image blocks upwards or when moving downward; Analyze comparison module 704, be used to analyze the monitoring result that detects by image detection module, and itself and predetermined value are compared; And intra-frame encoding mode refresh module 706, be used for when the result of comparison module satisfies predetermined condition, carry out intra-frame encoding mode and refresh.
Wherein, when prospect was moved left, predetermined condition was: the horizontal component of the motion vector of second image block is less than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value; When prospect moved right, predetermined condition was: the horizontal component of the motion vector of first image block is greater than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value; When prospect moved upward, predetermined condition was that the vertical component of the motion vector of first image block is greater than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value; And when prospect moved downward, predetermined condition was that the vertical component of the motion vector of second image block is less than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value.
And, this device further comprises: predetermined value is provided with module 708, is used for the one or more predetermined values that are provided with according to following factor: image block size, motion vector precision, based on the distortion performance of the existing limitation of block matching motion algorithm for estimating of translation mobility model and error, macroblock coding, eliminate the effect of smear; Wherein, predetermined value is used to weigh the overlapping degree of two corresponding reference frame image pieces.
Therefore,, can only carry out under the situation of less change and operand, reliably and effectively removal of images smear and particle residue effect by means of technique scheme.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a method of eliminating video decipher reestablishment image streaking is characterized in that, may further comprise the steps:
The image detection step, detect when prospect left or to the right or make progress or when moving downward the motion vector of one or more image blocks;
Analyze comparison step, the testing result of analysis in described image detection step, and itself and predetermined value compared, wherein, described analysis comparison step comprises following processing: the present frame adjacent block motion vector in more described one or more image blocks, and the overlapping degree and the predetermined value of described present frame adjacent block corresponding reference two field picture piece compared; And
The intra-frame encoding mode refresh step, when the result in the described analysis comparison step satisfied predetermined condition, the intra-frame encoding mode of carrying out described present frame adjacent block refreshed;
Wherein, when prospect is moved left, described predetermined condition is: the horizontal component of the motion vector of second image block is less than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, when prospect moves right, described predetermined condition is: the horizontal component of the motion vector of first image block is greater than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, when prospect moves upward, described predetermined condition is: the vertical component of the motion vector of first image block is greater than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, when prospect moves downward, described predetermined condition is: the vertical component of the motion vector of second image block is less than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, described first image block and described second image block are two adjacent image blocks of the left and right sides, and described first image block is positioned at the left side of described second image block.
2. method according to claim 1, it is characterized in that, described predetermined value is set according to one or more in the following factor: image block size, motion vector precision, based on the distortion performance of the existing limitation of block matching motion algorithm for estimating of translation mobility model and error, macroblock coding, eliminate the effect of smear.
3. method according to claim 2 is characterized in that, is under the situation of 16 * 8 and 8 * 16,1/4 pixel precision motion vector when described image block, and described predetermined value is 16.
4. a device of eliminating video decipher reestablishment image streaking is characterized in that, comprising:
Image detection module, detect when prospect left or to the right or make progress or the motion vector of one or more image blocks when moving downward;
Analyze comparison module, be used to analyze the testing result that detects by described image detection module, and itself and predetermined value compared, wherein, described analysis comparison module is used for the present frame adjacent block motion vector of more described one or more image blocks, and the overlapping degree and the predetermined value of described present frame adjacent block corresponding reference two field picture piece compared; And
The intra-frame encoding mode refresh module is used for when the result of described analysis comparison module satisfies predetermined condition, and the intra-frame encoding mode of carrying out described present frame adjacent block refreshes;
Wherein, when prospect is moved left, described predetermined condition is: the horizontal component of the motion vector of second image block is less than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, when prospect moves right, described predetermined condition is: the horizontal component of the motion vector of first image block is greater than zero, and the difference of the horizontal component of the motion vector of the horizontal component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, when prospect moves upward, described predetermined condition is: the vertical component of the motion vector of first image block is greater than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, when prospect moves downward, described predetermined condition is: the vertical component of the motion vector of second image block is less than zero, and the difference of the vertical component of the motion vector of the vertical component of the motion vector of first image block and second image block is more than or equal to predetermined value;
Wherein, described first image block and described second image block are two adjacent image blocks of the left and right sides, and described first image block is positioned at the left side of described second image block.
5. device according to claim 4 is characterized in that, further comprises:
Predetermined value is provided with module, is used for the one or more predetermined values that are provided with according to following factor: image block size, motion vector precision, based on the distortion performance of the existing limitation of block matching motion algorithm for estimating of translation mobility model and error, macroblock coding, eliminate the effect of smear; Wherein, described predetermined value is used to weigh the overlapping degree of two corresponding reference frame image pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710003620 CN101227606B (en) | 2007-01-18 | 2007-01-18 | Apparatus and method for eliminating video decipher reestablishment image streaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710003620 CN101227606B (en) | 2007-01-18 | 2007-01-18 | Apparatus and method for eliminating video decipher reestablishment image streaking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101227606A CN101227606A (en) | 2008-07-23 |
| CN101227606B true CN101227606B (en) | 2010-09-29 |
Family
ID=39859328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710003620 Expired - Fee Related CN101227606B (en) | 2007-01-18 | 2007-01-18 | Apparatus and method for eliminating video decipher reestablishment image streaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101227606B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104966305B (en) * | 2015-06-12 | 2017-12-15 | 上海交通大学 | Foreground detection method based on motion vector division |
| CN111831239B (en) * | 2019-04-15 | 2023-07-11 | 深信服科技股份有限公司 | Virtual desktop ghost elimination method and device, electronic equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341916A (en) * | 2000-08-28 | 2002-03-27 | 精工爱普生株式会社 | Image processing circuit and image data processing method, electrooptical device and electronic device |
| CN1384482A (en) * | 2001-05-08 | 2002-12-11 | 汤姆森许可贸易公司 | VF image processing method and device |
| EP1517554A1 (en) * | 2003-03-13 | 2005-03-23 | Matsushita Electric Industrial Co., Ltd. | Data processing device |
-
2007
- 2007-01-18 CN CN 200710003620 patent/CN101227606B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341916A (en) * | 2000-08-28 | 2002-03-27 | 精工爱普生株式会社 | Image processing circuit and image data processing method, electrooptical device and electronic device |
| CN1384482A (en) * | 2001-05-08 | 2002-12-11 | 汤姆森许可贸易公司 | VF image processing method and device |
| EP1517554A1 (en) * | 2003-03-13 | 2005-03-23 | Matsushita Electric Industrial Co., Ltd. | Data processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101227606A (en) | 2008-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103621083B (en) | Image decoding device and image decoding method | |
| CN107197259B (en) | Through segment or the loop circuit filtering method and its device of band boundaries | |
| CN101317458B (en) | Method and device for implementing adaptive quantization in encoding course | |
| CN103124347B (en) | Vision perception characteristic is utilized to instruct the method for multiple view video coding quantizing process | |
| CN103404137B (en) | The method and apparatus of effective sample adaptive equalization | |
| CN103503457B (en) | Image encoding apparatus, image decoding apparatus, image encoding method and image decoding method | |
| US20130028322A1 (en) | Moving image prediction encoder, moving image prediction decoder, moving image prediction encoding method, and moving image prediction decoding method | |
| CN104919805A (en) | Video coding method using at least evaluated visual quality and related video coding apparatus | |
| CN108632628A (en) | Method for deriving reference prediction mode values | |
| CN106231315B (en) | A kind of video coding system and the method for video coding using the system | |
| CN106993187A (en) | A kind of coding method of variable frame rate and device | |
| CN104702959B (en) | A kind of intra-frame prediction method and system of Video coding | |
| CN103118262A (en) | Rate distortion optimization method and device, and video coding method and system | |
| CN101742288B (en) | Video noise reduction encoding method and video noise reduction encoding device | |
| CN101102492A (en) | Conversion method from compression domain MPEG-2 based on interest area to H.264 video | |
| CN106686383A (en) | Depth map intra-frame coding method capable of preserving edge of depth map | |
| CN101227606B (en) | Apparatus and method for eliminating video decipher reestablishment image streaking | |
| Han et al. | Quadtree-based non-local Kuan’s filtering in video compression | |
| CN102098505B (en) | Monitoring video compression method and equipment | |
| CN107592547B (en) | A kind of motion perception figure extracting method based on HEVC compression domain | |
| KR20090041944A (en) | Method and apparatus for motion estimation using mode information of neighbor blocks | |
| CN103458237B (en) | The determination method and apparatus of Video coding mode and method for video coding and device | |
| KR100721022B1 (en) | Mehtod for filtering block boundary region | |
| Tian | Research on underground wireless video encoding algorithm based on region of interest for interprediction | |
| Shin et al. | Enhanced h. 264/avc deblocking filter for stereoscopic video coding in mobile broadcasting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20170118 |