CN101783916B - Frequency multiplier de-interlacing method and controller thereof - Google Patents
Frequency multiplier de-interlacing method and controller thereof Download PDFInfo
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Abstract
The invention discloses a frequency multiplier de-interlacing method and a controller thereof, which can improve the ghost phenomenon. The frequency multiplier de-interlacing method comprises the following steps of: generating ith odd number sequence output pixel line data in an interpolation picture frame by a jumping field border directional de-interlacing algorithm according to an ith odd number sequence and an ith even number sequence of an odd filed and an even field, wherein i is a natural number; and generating ith even number sequence output pixel line data in the interpolation picture frame by the jumping field border directional de-interlacing algorithm according to an i plus 1 even number sequence input pixel line data and an ith odd number sequence input pixel line data of the odd filed, thereby generating the integral interpolation picture frame.
Description
Technical field
The present invention relates to a kind of release of an interleave (De-interlacing) device and method, refer to a kind of frequency multiplication (Double Frame Rate) de-interlacer and method especially.
Background technology
The picture frame renewal frequency is that the frequency multiplication LCD TV of 120 hertz (Hz) comes out, and it can improve the picture frame renewal frequency effectively is the film flicker problem that traditional LCD TV of 60Hz is easy to generate.In the prior art, when receiving the input image of 60Hz, traditional frequency multiplier de-interlacing TV is each picture frame (Frame) that duplicates the input image, is inserted between each picture frame and its next picture frame, reaches the picture frame renewal frequency of 120Hz.
Yet when input comprised swiftly passing object in the image, traditional frequency multiplier de-interlacing system can the ghost of object occur because of two identical picture frames of broadcast continuously in display frame.It is one of direction of constantly endeavouring of industry that the ghost that so, how to improve the display frame of traditional frequency multiplication LCD TV can be taken into account production cost again.
Summary of the invention
Technical problem to be solved by this invention provides a kind of frequency multiplier de-interlacing method and controller thereof, can improve ghost phenomena.
In order to solve above technical problem, the invention provides following technical scheme:
The invention provides a kind of frequency multiplier de-interlacing method, produce image output in order to response input image, the input image comprises Qi Tuchang (Field) and bigraph field, and image output comprises the interpolation picture frame.De-interlace method comprises the following steps.At first; Import the picture element columns according to coming according to the i bar even number preface of strange figure i bar odd number preface input picture element columns certificate and bigraph field via striding staggered computing (the Edge OrientedDe-interlacing of figure field edge oriented solution; EODI) produce i bar odd number preface output picture element columns certificate in the interpolation picture frame, i is a natural number.Then, the i+1 bar odd number preface input picture element columns according to i bar even number preface input picture element row and strange figure produces the i bar even number preface output picture element columns certificate in the interpolation picture frame according to coming via striding the staggered computing of figure field edge oriented solution.
The present invention also provides a kind of frequency multiplier de-interlacing controller, produces image output in order to response input image, and the input image comprises strange figure and bigraph field, and image output comprises the interpolation picture frame.The release of an interleave controller comprises internal memory, memory control circuit and edge-oriented release of an interleave arithmetic unit.Internal memory receives and stores strange figure and bigraph field.Memory control circuit is in order to the i bar odd number preface input picture element columns certificate that reads and export strange figure field, the i+1 bar odd number preface input picture element columns certificate of strange figure field and the i bar even number preface input picture element columns certificate of bigraph field, and i is a natural number.Edge-oriented release of an interleave arithmetic unit according to i bar odd number preface input picture element columns according to and i bar even number preface input picture element columns produce the first computing picture element columns certificate according to carrying out edge-oriented release of an interleave computing, and according to i+1 bar odd number preface input picture element columns according to and i bar even number preface input picture element columns produce one second computing picture element columns certificate according to carrying out edge-oriented release of an interleave computing.Wherein, first and second computing picture element columns certificate is respectively in order to export picture element columns certificate as i bar even number preface in i bar odd number preface output picture element columns certificate and this interpolation picture frame in the interpolation picture frame.
Frequency multiplier de-interlacing method and controller thereof that the present invention adopts; Seeing through edge-oriented release of an interleave arithmetic unit to produce four picture frames according to the Qi Tuchang of correspondence with the figure field interpolation; Directly show that compared to tradition two first picture frames reach the release of an interleave system that frequency multiplication shows, can improve picture the ghost situation.In addition; The present invention sees through and strides the original graph field interpolation generation frequency doubling image frame of the staggered arithmetic unit of figure field edge oriented solution according to correspondence; Directly show that compared to tradition two first picture frames reach the situation that release of an interleave system that frequency multiplication shows is easy to generate the picture ghost, have low cost and can improve the advantage of picture ghost situation.Further; Release of an interleave controller of the present invention more utilizes blender to come interpolation to obtain corresponding image output with reference to the image movement degree of input image; The movement degree of considering the input image comes interpolation to produce each picture frame in the image output, further to promote the display effect advantage of picture.
Description of drawings
Fig. 1 is input image and the sketch map of image output of the release of an interleave controller of present embodiment.
Fig. 2 (a) is the calcspar according to the frequency multiplier de-interlacing controller of first embodiment to Fig. 2 (e).
Fig. 3 (a) is the part flow chart according to the frequency multiplier de-interlacing operation method of first embodiment.
Fig. 3 (b) is the part flow chart according to the frequency multiplier de-interlacing operation method of first embodiment.
Fig. 3 (c) is the part flow chart according to the frequency multiplier de-interlacing operation method of first embodiment.
Fig. 3 (d) is the part flow chart according to the frequency multiplier de-interlacing operation method of first embodiment.
The sketch map of the operation that Fig. 4 carries out for the edge-oriented release of an interleave arithmetic unit 16 of present embodiment.
Fig. 5 (a) is the calcspar according to the frequency multiplier de-interlacing controller of second embodiment to Fig. 5 (e).
Fig. 6 is the calcspar according to the blender 28 of present embodiment.
Fig. 7 (a) is the part flow chart according to the frequency multiplier de-interlacing operation method of second embodiment.
Fig. 7 (b) is the part flow chart according to the frequency multiplier de-interlacing operation method of second embodiment.
Fig. 7 (c) is the part flow chart according to the frequency multiplier de-interlacing operation method of second embodiment.
Fig. 7 (d) is the part flow chart according to the frequency multiplier de-interlacing operation method of second embodiment.
Fig. 7 (e) is the part flow chart according to the frequency multiplier de-interlacing operation method of second embodiment.
Fig. 7 (f) is the part flow chart according to the frequency multiplier de-interlacing operation method of second embodiment.
Fig. 8 (a) is the sketch map of the interpolation picture frame Frame of present embodiment.
Fig. 8 (b) is the sketch map of the interpolation picture frame Pre-Frame of present embodiment.
Fig. 9 is the frequency multiplier de-interlacing method of the preferred embodiment according to the present invention.
[primary clustering symbol description]
Ii: input image
Io: image output
Fd [s]: Qi Tuchang
Fd [s+1]: bigraph field
Li [s] o (1) arrives Li [s+1] e (y) to Li [s] o (y), Li [s+1] e (1): input picture element columns certificate
Lo [t-1] o (1) to Lo [t-1] o (y), Lo [t-1] e (1) to Lo [t-1] e (y), Lo [t] o (1) to Lo [t] o (y), Lo [t] e (1) to Lo [t] e (y), Lo [t+1] o (1) to Lo [t+1] o (y), Lo [t+1] e (1) to Lo [t+1] e (y), Lo [t+2] o (1) is to Lo [t+2] o (y), Lo [t+2] e (1) to Lo [t+2] e (y): output picture element columns certificate
10,20: the release of an interleave controller
12,22: internal memory
14,24: control circuit
16,26: edge-oriented release of an interleave arithmetic unit
28: blender
LP1, LP2: computing picture element columns certificate
LP3: interpolation picture element row data
Ma (2) arrives Mb (2) to Ma (2), Mb (2): big block
Embodiment
The de-interlace method of present embodiment produces image output in order to response input image, and the input image comprises Qi Tuchang (Field) and bigraph field, and image output comprises the interpolation picture frame.De-interlace method comprises the following steps; At first; I bar even number preface input picture element row according to strange figure i bar odd number preface input picture element row and bigraph field come via striding staggered computing (the Edge Oriented De-interlacing of figure field edge oriented solution; EODI) find out i bar odd number preface output picture element row in the interpolation picture frame, i is a natural number.Then, the i+1 bar odd number preface input picture element row according to i bar even number preface input picture element row and strange figure come to produce the i bar even number preface output picture element row in the interpolation picture frame via striding the staggered computing of figure field edge oriented solution.Afterwards, change i value and repetition abovementioned steps and export the picture element data that picture element is listed as with all odd numbers and the even number preface that obtain the interpolation picture frame.
Please with reference to Fig. 1, it is input image and the sketch map of image output of the release of an interleave controller of present embodiment.Input image Ii for example is alternating expression (interlace) image, and wherein strange figure comprises the picture element data corresponding with odd number bar scan line, and the bigraph field comprises the picture element data corresponding with even number bar scan line.The release of an interleave controller that present embodiment proposes carries out the operation of two frequencys multiplication (Doubled Frame Rate) release of an interleave (De-interlace), gradual to produce (Progressive) image output Io to alternating expression input image Ii.Next, produce picture frame picture Fm [t-1] with the release of an interleave controller of present embodiment according to corresponding figure field among the input image Ii and explain that to being operating as of Fm [t+2] is routine t is the natural number greater than 1.
First embodiment
The staggered arithmetic unit of the release of an interleave controller applying edge oriented solution of present embodiment obtains the picture element data of picture frame Fm [t-1] to Fm [t+2] according to the picture element data interpolation of a strange figure Fd [s] and bigraph field Fd [s+1].Please with reference to Fig. 2 (e), it is the calcspar according to the release of an interleave controller of first embodiment.Release of an interleave controller 10 comprises internal memory 12, control circuit 14 and edge-oriented release of an interleave arithmetic unit 16.Control circuit 14 is to couple with internal memory 12, and edge-oriented release of an interleave arithmetic unit 16 is to couple with control circuit 14.
Please with reference to Fig. 3 (a), Fig. 2 (a) and Fig. 1, produce in the operation of picture frame Fm [t-1] in interpolation, control circuit 14 is an access memory 12, arrives Li [s] o (N) with the input picture element columns of very being schemed among the Fd [s] according to Li [s] o (1), and N is the natural number greater than 1.Fig. 3 (a) is the part flow chart of the de-interlace method of present embodiment, and Fig. 2 (a) input picture element columns that only draws is done explanation according to Li [s] o (i) and Li [s] o (i+1) for example.At first like step (d), control circuit 14 be with input picture element columns according to Li [s] o (i) as output picture element columns according to Lo [t-1] o (i).Then like step (e), control circuit 14 provides input picture element columns according to Li [s] o (i) and Li [s] o (i+1) edge-oriented release of an interleave arithmetic unit 16 extremely, obtains output picture element columns among the picture frame Fm [t-1] according to Lo [t-1] e (i) with computing.Like step (f), release of an interleave controller 10 changes i and obtains all the picture element columns certificates among the picture frame Fm [t-1] with interpolation afterwards.
Please with reference to Fig. 3 (b), Fig. 2 (b) and Fig. 1; Produce in the operation of picture frame Fm [t] in interpolation; Control circuit 14 is an access memory 12, with very schemed input picture element columns among the Fd [s] according to Li [s] o (1) to the input picture element columns of Li [s] o (N) and bigraph field Fd [s+1] according to Li [s+1] e (1) to Li [s+1] e (N).Fig. 3 (b) is the part flow chart of the de-interlace method of present embodiment, and Fig. 2 (b) input picture element columns that only draws is done explanation according to Li [s] o (i), Li [s] o (i+1), Li [s+1] e (i) for example.At first like step (a), control circuit 14 be provide input picture element columns according to Li [s] o (i) and Li [s+1] e (i) to edge-oriented release of an interleave arithmetic unit 16, obtain output picture element columns among the picture frame Fm [t] according to Lo [t] o (i) with computing.Then like step (b), control circuit 14 more provides input picture element columns according to Li [s+1] e (i) and Li [s] o (i+1) edge-oriented release of an interleave arithmetic unit 16 extremely, obtains output picture element columns among the picture frame Fm [t] according to Lo [t] e (i) with computing.Like step (c), release of an interleave controller 10 changes i and obtains all the picture element columns certificates among the picture frame Fm [t] with interpolation afterwards.
Please with reference to Fig. 3 (c), Fig. 2 (c) and Fig. 1, produce in the operation of picture frame Fm [t+1] in interpolation, control circuit 14 access memory 12 arrive Li [s+1] e (N) with picture element row data Li [s+1] e (1) that obtains among the bigraph field Fd [s+1].Fig. 3 (c) is the part flow chart of the de-interlace method of present embodiment, and Fig. 2 (c) input picture element columns that only draws is done explanation according to Li [s+1] e (i) and Li [s+1] e (i+1) for example.At first like step (g), control circuit 14 provide input picture element columns according to Li [s+1] e (i) and Li [s+1] e (i+1) to edge-oriented release of an interleave arithmetic unit 16, obtain output picture element columns among the picture frame Fm [t+1] according to Lo [t+1] o (i) with computing.Then like step (h), control circuit 14 with input picture element columns according to Li [s+1] e (i) as exporting the picture element columns according to Lo [t+1] e (i).Like step (i), release of an interleave controller 10 changes i and produces all the picture element columns certificates among the picture frame Fm [t+1] with interpolation afterwards.
Please with reference to Fig. 3 (d), Fig. 2 (d) and Fig. 1; Produce in the operation of picture frame Fm [t+2] in interpolation; Control circuit 14 access memory 12 arrive Li [s+2] o (N) to the input picture element columns among Li [s+1] e (N) and the strange figure Fd [s+2] (not being illustrated among Fig. 1) according to Li [s+2] o (1) according to Li [s+1] e (1) with the input picture element columns that obtains among the bigraph field Fd [s+1].Fig. 3 (d) is the part flow chart of the de-interlace method of present embodiment, and Fig. 2 (d) input picture element columns that only draws is done explanation according to Li [s+2] o (i), Li [s+2] o (i+1) and Li [s+2] e (i) for example.At first like step (j), control circuit 14 be provide input picture element columns according to Li [s+2] o (i) and Li [s+1] e (i) to edge-oriented release of an interleave arithmetic unit 16, obtain output picture element columns among the picture frame Fm [t+2] according to Lo [t+2] o (i) with computing.Then like step (k), control circuit 14 provides input picture element columns according to Li [s+2] o (i+1) and Li [s+1] e (i) edge-oriented release of an interleave arithmetic unit 16 extremely, obtains output picture element columns among the picture frame Fm [t+2] according to Lo [t+2] e (i) with computing.Like step (1), release of an interleave controller 10 changes i and obtains all the picture element columns certificates among the picture frame Fm [t+2] with interpolation afterwards.
Fig. 4 is the operation chart of the edge-oriented release of an interleave arithmetic unit 16 of the preferred embodiment according to the present invention.Make edge-oriented release of an interleave arithmetic unit 16 receive computing picture element columns, and interpolation according to this produce interpolation picture element columns according to LP3 according to LP1 and LP2.Interpolation picture element columns is according to comprising among the LP3 that picture element data P3 (1) is to P3 (y); Because edge-oriented each picture element data P3 (1) of release of an interleave arithmetic unit 16 interpolations generation is that essence is identical to the operation of P3 (y); Next; The example that is operating as that produces picture element data P3 (x) with edge-oriented release of an interleave arithmetic unit 16 interpolations explains that y is the natural number greater than 1, and x is the natural number that is less than or equal to y.
Edge-oriented release of an interleave computing comprises the following steps.At first according to a plurality of picture element data to the computing picture element columns among a plurality of direction index reflection computing picture element row data LP1 according to a plurality of picture element data among the LP2.For instance; Direction index D comprises numerical value { 2;-1,0,1; 2}, computing picture element columns is videoed to computing picture element columns according to the picture element data P2 (x-2) among the LP2 to P2 (x+2) via having numerical value-2 ,-1,0,1 and 2 direction index D respectively to P1 (x-2) according to the picture element data P1 (x+2) among the LP1.
Then to be had picture element data P1 (x-2) that the direction index D of numerical value-2 to 2 video be that the big block Ma (2) that the center marks off correspondence arrives Ma (2) to P1 (x+2) with aforementioned; And with aforementioned to be had the picture element data P2 (x+2) that the direction index D of numerical value-2 to 2 video be that the center marks off corresponding big block Mb (2) to Mb (2) to P2 (x-2).For example, each big block Ma (2) comprises 3 picture elements of horizontal direction to Ma (2) and Mb (2) to Mb (2).Then, the big block Ma (D) of mutual correspondence and MB (D) are carried out the block comparison, to find corresponding block difference Diff (D), D equals-2 to 2.For example, block difference Diff (2) can obtain via the equation computing:
Diff(-2)＝|P1(x-1)-P2(x+1)|+|P1(x-2)-P2(x+2)|+|P1(x-3)-P2(x+3)|
Then, with the corresponding direction index D of the block difference of minimum as the detecting direction; For example block difference Diff (2) has minimum block difference person for block difference Diff (2) in Diff (2), so will be with direction index-2 as the detecting direction.Afterwards, obtain picture element data P3 (x) according to inserting in picture element data P1 (x-2) corresponding and the P2 (x+2) with the detecting direction.
Though only produce picture frame Fm [t-1] to Fm [t+1] according to a strange figure Fd [s] and bigraph field Fd [s+1] in the above-described embodiments with release of an interleave controller 10; And doing explanation according to the example that is operating as that strange figure Fd [s+2] and bigraph field Fd [s+1] produce picture frame Fm [t+2], the personage who knows this skill is when thinking and the producing method of all picture frames.
The release of an interleave controller of present embodiment sees through edge-oriented release of an interleave arithmetic unit and comes to produce four picture frames according to the Qi Tuchang of correspondence with the figure field interpolation.So, show directly that compared to tradition two first picture frames reach the release of an interleave system that frequency multiplication shows, the release of an interleave controller of present embodiment can improve the ghost situation of picture.
Second embodiment
Edge-oriented release of an interleave arithmetic unit used by the release of an interleave controller of second embodiment and blender comes to obtain the image data of picture frame Fm [t-1] to Fm [t+2] with reference to image movement degree frequency multiplication interpolation among the input picture Ii.Please with reference to Fig. 5 (e), it is the calcspar according to the release of an interleave controller of second embodiment.
Release of an interleave controller 10 differences of the release of an interleave controller 20 of present embodiment and first embodiment are that the memory control circuit 24 of present embodiment more comprises blender 28; It is coupled to edge-oriented release of an interleave arithmetic unit 26 and control circuit 24; Blender 28 is in order to the image kinematic parameter M with reference to input image Ii, and the picture element columns that produces according to edge-oriented release of an interleave arithmetic unit 26 computings produces output picture element columns according to Lout according to the input picture element columns that Lx1 and controller circuitry 24 provide according to the Lx2 interpolation.
Please with reference to Fig. 6, it is the calcspar according to the blender 28 of present embodiment.Blender 28 produces output picture element columns according to Lout in order to decide the weight of picture element row data Lx1 and Lx2 according to kinematic parameter M to mix.For example, blender 28 can mix according to following equation and produces output picture element columns according to Lout:
Lout＝Lx1×M+Lx2×(1-M)
Then, respectively release of an interleave controller 20 interpolations generation picture frame Fm [t-1] are further specified to the operation of Fm [t+2].In ensuing narration; Respectively with the be operating as example of i ' the odd number preface output picture element columns of each picture frame Fm [t-1] in the Fm [t+2] according to Lo [t-1] o (i '), Lo [t] o (i '), Lo [t+1] o (i ') and Lo [t+2] o (i '), the operation of each odd number preface picture element columns certificate in the Fm [t+2] describes to each picture frame Fm [t-1]; And respectively with each picture frame Fm [t-1] in the Fm [t+2] i ' even number preface output picture element columns according to the example that is operating as of Lo [t-1] e (i '), Lo [t] e (i '), Lo [t+1] e (i ') and Lo [t+2] e (i '); The operation of each even number preface picture element columns certificate in the Fm [t+2] describes to each picture frame Fm [t-1], and i ' is for being less than or equal to the natural number of N.
Please with reference to Fig. 7 (a), Fig. 5 (a) and Fig. 1, the de-interlace method difference that the de-interlace method of present embodiment and Fig. 3 (a) are illustrated is that step (e) wherein is to comprise that step (e1) is to (e3).At first like step (e1), computing produces the picture element columns according to Lx1 to edge-oriented release of an interleave arithmetic unit 26 according to input picture element row data Li [s] o (i '+1) and Li [s] o (i ').How edge-oriented release of an interleave arithmetic unit 26 is handled according to the data of being imported is that action with edge-oriented release of an interleave arithmetic unit 16 is identical, will not repeat in this.In step (e2), control circuit 24 provides input picture element columns to provide to blender 28 according to Lx2 as the picture element columns according to Li [s+1] e (i ').
In step (e3), blender 28 determines respectively the weight of picture element columns according to Lx1 and Lx2 to produce the picture element columns according to Lout to mix according to kinematic parameter M and (1-M).The output picture element columns that is produced according to Lout by as the output picture element columns among the picture frame picture Fm [t-1] according to Lo [t-1] e (i ') output.
Please with reference to Fig. 7 (b), Fig. 7 (c), Fig. 5 (b) and Fig. 1; The de-interlace method difference that the de-interlace method of present embodiment and Fig. 3 (b) are illustrated is that step (a) wherein is to comprise step (a1) to (a3), and step wherein (b) is to comprise that step (b1) is to (b3).Like step (a1), computing produces the picture element columns according to Lx1 (t1) to edge-oriented release of an interleave arithmetic unit 26 according to input picture element row data Li [s] o (i ') and Li [s+1] e (i ').In step (a2), control circuit 24 provides input picture element columns to provide to blender 28 according to Lx2 (t1) as the picture element columns according to Li [s] o (i ').In step (a3), determine respectively the weight of picture element row data Lx1 (t1) and Lx2 (t2) to produce the picture element columns according to Lout according to weight parameter M and (1-M) to mix, and with its as output picture element columns according to Lo [t] o (i ') output.
In step (b1), computing produces the picture element columns according to Lx1 (t2) to edge-oriented release of an interleave arithmetic unit 26 according to input picture element row data Li [s+1] e (i ') and Li [s] o (i '+1).In step (b2), control circuit 24 provides input picture element columns to provide to blender 28 according to Lx2 (t2) as the picture element columns according to Li [s+1] e (i ').In step (b3), determine respectively the weight of picture element row data Lx1 (t1) and Lx2 (t2) to produce the picture element columns according to Lout according to weight parameter M and (1-M) to mix, and with its as output picture element columns according to Lo [t] e (i ') output.
Please with reference to Fig. 7 (d), Fig. 5 (c) and Fig. 1, the de-interlace method difference shown in the de-interlace method of present embodiment and Fig. 3 (c) is that step (g) wherein comprises that step (g1) is to (g3).In step (g1), computing produces the picture element columns according to Lx1 to edge-oriented release of an interleave arithmetic unit 26 according to input picture element row data Li [s+1] e (i ') and Li [s+1] e (i '+1).In step (g2), control circuit 24 provides input picture element columns to provide to blender 28 according to Lx2 as the picture element columns according to Li [s+2] o (i ').In step (g3), determine respectively the weight of picture element row data Lx1 and Lx2 to produce the picture element columns according to Lout according to weight parameter M and (1-M) to mix, and with its as output picture element columns according to Lo [t+1] o (i ') output.
Please with reference to Fig. 7 (e), Fig. 7 (f), Fig. 5 (d) and Fig. 1, the de-interlace method difference that the de-interlace method of present embodiment and Fig. 3 (d) are illustrated is that step (j) wherein comprises step (j1) to (j3), and step (k) comprises that step (k1) is to (k3).In step (j1), computing produces the picture element columns according to Lx1 (t3) to edge-oriented release of an interleave arithmetic unit 26 according to input picture element row data Li [s+2] o (i ') and Li [s+1] e (i ').In step (j2), control circuit 24 provides input picture element columns to provide to blender 28 according to Lx2 (t3) as the picture element columns according to Li [s+2] o (i ').In step (j3), determine respectively the weight of picture element row data Lx1 (t3) and Lx2 (t3) to produce the picture element columns according to Lout according to weight parameter M and (1-M) to mix, and with its as output picture element columns according to Lo [t+2] o (i ') output.
In step (k1), computing produces the picture element columns according to Lx1 (t4) to edge-oriented release of an interleave arithmetic unit 26 according to input picture element row data Li [s+1] e (i ') and Li [s+2] o (i '+1).In step (k2), control circuit 24 provides input picture element columns to provide to blender 28 according to Lx2 (t4) as the picture element columns according to Li [s+1] e (i ').In step (k3), determine respectively the weight of picture element row data Lx1 (t4) and Lx2 (t4) to produce the picture element columns according to Lout according to weight parameter M and (1-M) to mix, and with its as output picture element columns according to Lo [t+2] e (i ') output.
The release of an interleave controller 20 motion estimation circuit (not shown) capable of using of present embodiment produce kinematic parameter M.Corresponding to each is by the picture element data that blender 28 produces among the image output Io, motion estimation circuit all produces kinematic parameter M accordingly.For example, motion estimation circuit set the motion estimation zone estimate correspond to plain data P [t] o of the y stroke in the x row picture element among the picture frame Fm [t-1] (x, y) corresponding kinematic parameter M [t] o (x, y).X is the natural number that is less than or equal to N.Make aforementioned each strange figure with the bigraph field in each picture element columns according to comprising Z stroke pixel data, y is the natural number that is less than or equal to Z.
Please with reference to figure (a) and Fig. 8 (b), it be the sketch map that the motion estimation of the motion estimation circuit of present embodiment is operated.Motion estimation circuit system will very scheme a Fd [s] and bigraph field Fd [s+1] synthesizes picture frame Frame, and will very scheme a Fd [s-2] and bigraph field Fd [s-1] synthesizes picture frame Pre_Frame.
Motion estimation circuit is defined range A in picture frame Frame.For instance, regional A comprises picture element data Pr1 to Pr9, and picture element data Pr1-Pr3 is respectively and imports the picture element columns among the bigraph field Fd [s+1] according to picture element data P [s+1] e (x among Li [s+1] e (x); Y-1), P [s+1] e (x, y) and P [s+1] e (x, y+1); Picture element data Pr4 to Pr6 be respectively among strange figure the Fd [s] input picture element columns according to picture element data P [s] o among Li [s] o (x) (x, y-1), P [s] o (x, y) and P [s] o (x; Y+1), picture element data Pr7 to Pr9 be respectively among the bigraph field Fd [s+1] input picture element columns according to picture element data P [s+1] e among Li [s+1] e (x+1) (x+1, y-1), P [s+1] e (x+1; Y) and P [s+1] e (x+1, y+1).
Similarly, motion estimation circuit is defined range B in picture frame Pre_Frame, and area B comprises picture element data Pre_Pr1-Pre_Pr9; Picture element data Pre_Pr1-Pre_Pr3 be respectively among the bigraph field Fd [s-1] input picture element columns according to picture element data P [s-1] e among Li [s-1] e (x) (x, y-1), P [s-1] e (x, y) and P [s-1] e (x; Y+1), picture element data Pre_Pr4-Pre_Pr6 be respectively among strange figure the Fd [s-2] input picture element columns according to picture element data P [s-2] o among Li [s-2] o (x) (x, y-1), P [s-2] o (x; Y) and P [s-2] o (x; Y+1), picture element data Pre_Pr7-Pre_Pr9 be respectively among the bigraph field Fd [s-1] input picture element columns according to picture element data P [s-1] e among Li [s-1] e (x+1) (x+1, y-1), P [s-1] e (x+1; Y) and P [s-1] e (x+1, y+1).
Can according to following equation computing produce correspond to picture element P [t] o (x, kinematic parameter M [t] o y) (x, y):
Threshold is a critical numerical value.Generation correspond to picture frame Fm [t-1] the picture element data that other interpolation produces in the Fm [t+2] kinematic parameter M operation can (x, operation y) be analogized and is obtained according to producing kinematic parameter M [t] o.
The edge-oriented release of an interleave arithmetic unit of convention only is applied to the edge-oriented release of an interleave in same figure, and the release of an interleave controller of embodiment of the invention system produces frequency doubling image frame through striding the original graph field interpolation of the staggered arithmetic unit of figure field edge oriented solution according to correspondence.So, directly show that compared to tradition two first picture frames reach the situation that release of an interleave system that frequency multiplication shows is easy to generate the picture ghost, the release of an interleave controller of present embodiment has low cost and can improve the advantage of picture ghost situation.
Further, the release of an interleave controller of present embodiment more utilizes blender to come interpolation to obtain corresponding image output with reference to the image movement degree of input image.So, the release of an interleave controller of present embodiment considers that the movement degree of input image comes interpolation to produce each picture frame in the image output, further to promote the display effect advantage of picture.
Fig. 9 is the frequency multiplier de-interlacing method of the preferred embodiment according to the present invention; In step 910; According to time adjacent strange figure and bigraph field, strange figure can come across before or after the time point of bigraph field, produces a plurality of release of an interleave picture frames via striding the staggered computing frequency multiplication of figure field edge oriented solution; In step 920; The strange figure field that each release of an interleave picture frame is adjacent with this time and this bigraph field are carried out adaptability and are mixed to produce the release of an interleave picture frame of image compensation; For example; Utilize an image kinematic parameter to mix the release of an interleave picture frame that produces image compensation each release of an interleave picture frame and this strange figure field and this bigraph field; For example, image kinematic parameter system determine according to institute by the adjacent a plurality of picture element columns in position in a target picture element columns certificate of the release of an interleave picture frame of this image compensation figure field adjacent with a plurality of times, for example the image kinematic parameter be relevant to the adjacent a plurality of picture element columns certificates in adjacent middle position of time the respective pixel difference absolute value and.
In sum, though the present invention discloses as above with a preferred embodiment, so it is not in order to limit the present invention.Have common knowledge the knowledgeable in the technical field under the present invention, do not breaking away from the spirit and scope of the present invention, when doing various changes and retouching.Therefore, protection scope of the present invention should be as the criterion with claim.
Claims (17)
1. a frequency multiplier de-interlacing method produces an image output in order to respond an input image, and this input image comprises a Qi Tuchang and a bigraph field, and this image output comprises one first interpolation picture frame, it is characterized in that, this de-interlace method comprises:
I bar even number preface input picture element columns certificate according to this strange figure i bar odd number preface input picture element columns certificate and this bigraph field; Produce i bar odd number preface output picture element columns certificate in this first interpolation picture frame via striding the staggered computing of figure field edge oriented solution, i is a natural number;
Export picture element columns certificate according to this i bar even number preface input picture element columns certificate and this strange i+1 bar odd number preface input picture element columns certificate of scheming the field via an i bar even number preface of striding in this first interpolation picture frame of the staggered computing generation of figure field edge oriented solution; And
Change the value of i and repeat all odd number prefaces and the even number preface output picture element columns certificate of above-mentioned steps to obtain this first interpolation picture frame.
2. frequency multiplier de-interlacing method as claimed in claim 1 is characterized in that, the step of this i bar odd number preface output picture element columns certificate more comprises in this first interpolation picture frame of this generation:
Obtain one first computing picture element columns certificate according to this i bar odd number preface input picture element columns certificate and this i bar even number preface input picture element columns certificate via edge-oriented release of an interleave computing;
Import picture element columns certificate as one second computing picture element columns certificate with this i bar odd number preface; And
According to one first weight parameter and one second weight parameter come to determine respectively this first and the weight of this second computing picture element columns certificate, to produce this i bar odd number preface output picture element columns certificate in this first interpolation picture frame; This first weight parameter and this second weight parameter sum are 1, and this first and this second weight parameter system be relevant to the movement degree of this input image.
3. frequency multiplier de-interlacing method as claimed in claim 1 is characterized in that, the step of this i bar even number preface output picture element columns certificate more comprises in this first interpolation picture frame of this generation:
Obtain one first computing picture element columns certificate according to this i+1 bar odd number preface input picture element columns certificate and this i bar even number preface input picture element columns certificate via edge-oriented release of an interleave computing;
Import picture element columns certificate as one second computing picture element columns certificate with this i bar even number preface; And
According to one first weight parameter and one second weight parameter come to determine respectively this first and the weight of this second computing picture element columns certificate, to produce this i bar even number preface output picture element columns certificate in this first interpolation picture frame; This first weight parameter and this second weight parameter sum are 1, and this first and this second weight parameter system be relevant to the movement degree of this input image.
4. frequency multiplier de-interlacing method as claimed in claim 1 is characterized in that, more comprises:
Export picture element columns certificate with this i bar odd number preface input picture element columns certificate as an i bar odd number preface in the one second interpolation picture frame;
According to this i bar odd number preface input picture element columns according to and this i+1 bar odd number preface input picture element columns produce i bar even number preface output picture element columns certificate in this second interpolation picture frame according to coming via edge-oriented release of an interleave computing; And
Change the value of i and repeat all odd number prefaces and the even number preface output picture element columns certificate of above-mentioned steps to obtain this second interpolation picture frame.
5. frequency multiplier de-interlacing method as claimed in claim 1 is characterized in that, more comprises:
I+1 bar even number preface input picture element columns according to this i bar even number preface input picture element columns certificate and this bigraph field produces i bar odd number preface output picture element columns certificate in one the 3rd interpolation picture frame according to coming via edge-oriented release of an interleave computing;
Export picture element columns certificate with this i bar even number preface input picture element columns certificate as an i bar even number preface in the 3rd interpolation picture frame; And
Change the value of i and repeat all odd number prefaces and the even number preface output picture element columns certificate of above-mentioned steps to obtain the 3rd interpolation picture frame.
6. a frequency multiplier de-interlacing controller produces an image output in order to respond an input image, and this input image comprises a Qi Tuchang and a bigraph field, and this image output comprises one first interpolation picture frame, it is characterized in that, this release of an interleave controller comprises:
One internal memory is in order to receive and to store very figure and this bigraph field;
One control circuit, in order to the i bar odd number preface input picture element columns certificate that reads and export this strange figure field, the i+1 bar odd number preface input picture element columns certificate of this strange figure field and the i bar even number preface input picture element columns certificate of this bigraph field, i is a natural number; And
The one edge oriented solution arithmetic unit that interlocks; In order to according to this i bar odd number preface input picture element columns according to and this i bar even number preface input picture element columns produce one first computing picture element columns certificate according to carrying out edge-oriented release of an interleave computing, and according to this i+1 bar odd number preface input picture element columns according to and this i bar even number preface input picture element columns produce one second computing picture element columns certificate according to carrying out edge-oriented release of an interleave computing;
Wherein, this first and this second computing picture element columns according to respectively as i bar odd number preface output picture element columns in this first interpolation picture frame according to and this first interpolation picture frame in i bar even number preface output picture element columns certificate.
7. frequency multiplier de-interlacing controller as claimed in claim 6 is characterized in that, more comprises:
One blender; In order to determine this first computing picture element columns certificate and this i bar odd number preface to import the weight of picture element columns certificate respectively, to produce this i bar odd number preface output picture element columns certificate in this first interpolation picture frame according to one first weight parameter and one second weight parameter;
Wherein, This blender is more in order to determine this second computing picture element columns certificate and this i bar even number preface to import the weight of picture element columns certificate respectively according to one the 3rd weight parameter and one the 4th weight parameter, to produce this i bar even number preface output picture element columns certificate in this first interpolation picture frame; The movement degree that this first is 1 with this second weight parameter sum, this first weight parameter system is relevant to this input image, the 3rd with the 4th weight parameter sum be that the 1 and the 3rd weight parameter is the movement degree that is relevant to this input image.
8. frequency multiplier de-interlacing controller as claimed in claim 6; It is characterized in that this release of an interleave controller imports picture element columns certificate with this i bar odd number preface respectively and this i bar even number preface input picture element columns certificate is exported picture element columns certificate as an i bar even number preface in i bar odd number preface output picture element columns certificate and one the 3rd picture frame in the one second interpolation picture frame.
9. frequency multiplier de-interlacing controller as claimed in claim 8; It is characterized in that; This edge-oriented release of an interleave arithmetic unit in order to according to this i bar odd number preface input picture element columns according to and this i+1 bar odd number preface input picture element columns produce one the 3rd computing picture element columns certificate according to carrying out edge-oriented release of an interleave computing, and according to this i bar even number preface input picture element columns according to and this i+1 bar even number preface input picture element columns produce one the 4th computing picture element columns certificate according to carrying out edge-oriented release of an interleave computing;
10. frequency multiplier de-interlacing controller as claimed in claim 9; It is characterized in that the 3rd and the 4th computing picture element columns certificate is respectively in order to export picture element columns certificate as an i bar odd number preface in i bar even number preface output picture element columns certificate and the 3rd interpolation picture frame in this second interpolation picture frame.
11. frequency multiplier de-interlacing controller as claimed in claim 9 is characterized in that, more comprises:
One blender; In order to determine the 3rd computing picture element columns certificate and this i bar even number preface to import the weight of picture element columns certificate respectively according to one first weight parameter and one second weight parameter; To produce this i bar even number preface output picture element columns certificate in this second interpolation picture frame; This first weight parameter and this second weight parameter sum are 1, and this first and this second weight parameter system be relevant to the movement degree of this input image;
Wherein, This blender is more in order to determine the 4th computing picture element columns certificate and this i bar odd number preface to import the weight of picture element columns certificate respectively according to one the 3rd weight parameter and one the 4th weight parameter; Producing in the 3rd interpolation picture frame this i bar odd number preface output picture element columns certificate, the 3rd with the 4th weight parameter sum be the movement degree that the 1 and the 3rd weight parameter system is relevant to this input image.
12. a frequency multiplier de-interlacing method is characterized in that, comprising:
According to time adjacent a Qi Tuchang and a bigraph field, produce a plurality of release of an interleave picture frames via striding the staggered computing frequency multiplication of figure field edge oriented solution; And
Adaptability is carried out in each release of an interleave picture frame and this strange figure field and this bigraph field mixes to produce the release of an interleave picture frame of an image compensation.
13. frequency multiplier de-interlacing method as claimed in claim 12 is characterized in that, this adaptability blend step is with very figure field and this bigraph field utilize an image kinematic parameter to mix the release of an interleave picture frame that produces this image compensation with each release of an interleave picture frame.
14. frequency multiplier de-interlacing method as claimed in claim 12 is characterized in that, this strange figure system comes across before the time point of this bigraph field.
15. frequency multiplier de-interlacing method as claimed in claim 12 is characterized in that, this strange figure system comes across after the time point of this bigraph field.
16. frequency multiplier de-interlacing method as claimed in claim 13; It is characterized in that, this image kinematic parameter system by the adjacent a plurality of picture element columns in position in a target picture element columns certificate of the release of an interleave picture frame of this image compensation figure field adjacent with a plurality of times according to determine.
17. frequency multiplier de-interlacing method as claimed in claim 13 is characterized in that, this image kinematic parameter system is provided by a motion estimation circuit.
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| EP0586262A1 (en) * | 1992-09-04 | 1994-03-09 | Kabushiki Kaisha Toshiba | Television signal processor |
| CN1678041A (en) * | 2004-04-02 | 2005-10-05 | 晨星半导体股份有限公司 | De-interlacing device capable of de-interlacing a video field adaptively and associated method |
| CN101026681A (en) * | 2006-02-17 | 2007-08-29 | 联咏科技股份有限公司 | Interlaced image signal frequency multiplication method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0586262A1 (en) * | 1992-09-04 | 1994-03-09 | Kabushiki Kaisha Toshiba | Television signal processor |
| CN1678041A (en) * | 2004-04-02 | 2005-10-05 | 晨星半导体股份有限公司 | De-interlacing device capable of de-interlacing a video field adaptively and associated method |
| CN101026681A (en) * | 2006-02-17 | 2007-08-29 | 联咏科技股份有限公司 | Interlaced image signal frequency multiplication method and device |
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