CN103747224B - Based on the control method of the ambient light adaptive rate of change of audio & video equipment - Google Patents

Abstract

The invention discloses the control method of the ambient light adaptive rate of change based on audio & video equipment, the module of its application comprises behavior color processing module, control module, luminous driver module, first memory, second memory and the 3rd memory, audio, video data is processed into corresponding color data by color processing module, then control module is sent to, control module calculates motivation value according to the time sequencing received, and motivation value is sent to luminous driver module, luminous driver module controls environment lighting system.Control method smooth color data of the present invention, can the color data of filtering sudden change, again can adaptive quickening rate of change under fast-changing sight, and the visual environment strengthening experiencer is experienced; The present invention utilizes alterable to upgrade the treatment mechanism of amplitude, improves the deficiency in the flexibility of fixed value tracking mode, the dynamic experience of enhance ambient light.It is low that the present invention also has cost, the advantages such as applied range.

Description

Based on the control method of the ambient light adaptive rate of change of audio & video equipment

Technical field

The present invention relates to ambient light illumination system, particularly relate to a kind of control method of the ambient light adaptive rate of change based on audio & video equipment.

Background technology

At present, ambient light illumination system based on audio & video equipment obtains change signal according to data sources such as video image audio frequency, again this change signal is converted to color data to drive the illuminator of corresponding light modules, experiences with the visual environment strengthening display device.Current surround lighting algorithm is mainly according to the audio, video data that audio & video equipment gathers, and in addition the best impression of experiencer is processing target with in-mind anticipation, audio, video data is converted to color data drive environment light and throws light on.

Due to prior art be generally utilize prime process after color data Direct driver lamp bar, do not have the stepping considering to carry out driving data variable bit rate to upgrade the improvement effect brought, such as, seamlessly transit effect, filtering mutation disturbance, and can fast-changing sight etc. be followed the trail of.

Summary of the invention

The object of the present invention is to provide a kind of control method of the ambient light adaptive rate of change based on audio & video equipment, this control method can according to the statistics of time period color change situation and data source step change degree, adopt adaptive change renewal rate, with filtering mutation disturbance, and the change of violent color can be followed the tracks of very well rapidly.

Technical scheme of the present invention is: based on the control method of the ambient light adaptive rate of change of audio & video equipment, the module that described control method is applied comprises behavior color processing module, control module, luminous driver module, first memory, second memory and the 3rd memory, the output of color processing module is connected with control module, and control module is connected with luminous driver module, first memory, second memory and the 3rd memory respectively;

Audio & video equipment output sound video data, audio, video data is processed into corresponding color data by color processing module, then temporally color data is sent to control module by sampling order, and the audio, video data that audio & video equipment exports is divided into violent contextual model and soft contextual model;

Described first memory is the memory of first-in first-out, and control module is first prestored into the symbol fast of the violent contextual model of N number of representative in a first memory, and the symbol slow of the soft contextual model of the representative of same number; The number Rfast of the symbol fast of violent contextual model is recorded in described second memory, and the number Rslow of the symbol slow of soft contextual model;

Control module, according to the reception order of color data, calculates the difference Vdelta of adjacent double sampling Vsample_old and Vsample_new color data,

Wherein, when the difference Vdelta of the color data that the color data that known current time receives and previous moment receive, setting current time is the probability of violent contextual model is P (w _f| v); Wherein, according to statistics Bayes formula, P (w _f| v) such as formula shown in (I);

$P\left(w_f\right|v)=\frac{P\left(v|w_f\right)P\left(w_f\right)}{P\left(v\right)}---\left(I\right);$

P (v|w _f) for known be violent contextual model when difference Vdelta occur probability, P (w _f) be the probability that contextual model violent in a period of time T before current time occurs, the probability that P (v) occurs for difference Vdelta, can adjust the size in T interval according to Human Perception actual conditions, the value of T is: 0.5 second≤T≤4 second;

When the difference Vdelta of the color data that the color data that known current time receives and previous moment receive, setting current time is the probability of soft contextual model is P (w _s| v), wherein, P (w _s| v) such as formula shown in (II);

$P\left(w_s|v\right)=\frac{P\left(v|w_s\right)P\left(w_s\right)}{P\left(v\right)}---\left(II\right);$

P (v|w _s) for known be soft contextual model when difference Vdelta occur probability, P (w _s) probability that occurs for soft contextual model in a period of time T before current time, the probability that P (v) occurs for difference Vdelta;

Wherein, factor (I) is identical with the denominator of formula (II) two formula, P (w _f) value is such as formula shown in (III), for known, wherein, Rfast is the number of the fast symbol stored in T time section second memory, and Rslow is the number of the slow symbol stored in T time section second memory; $P\left(w_f\right)=\frac{R_{fast}}{R_{slow}+R_{fast}}---\left(III\right);$

P (w _s) value such as formula shown in (IV), be also known;

$P\left(w_s\right)=\frac{R_{s1ow}}{R_{slow}+R_{fast}}---\left(IV\right);$

According to existing data, set up difference Vdelta and P (v|w _f) and P (v|w _s) database of relation, described database purchase is in the 3rd memory; According to known difference Vdelta, controller is from P (v|w corresponding to the data base call of the 3rd memory _f) and P (v|w _s), and then calculate corresponding P (w _f| v) with P (w _s| v) value;

As P (w _f| v) be greater than P (w _s| v) during value, current time is violent contextual model, and the symbol in a first memory stored in current time is fast, and adds 1 to the Rfast value of T time section in second memory; As P (w _f| v) be less than P (w _s| v) during value, current time is soft contextual model, and the symbol in a first memory stored in current time is slow, and adds 1 to the Rslow value of T time section in second memory; Then contextual model symbol fast or slow the earliest in first memory in T time section is shifted out, and according to the attribute situation of this symbol shifted out the Rfast value in second memory and Rslow value done and subtract 1 renewal, the Rfast value after setting second memory upgrades and Rslow value are respectively Rfast1 value and Rslow1 value;

Setting updated value is that the computing formula of Vstep, updated value Vstep is such as formula shown in (V);

Vstep＝K*Vdelta*(Rfast1+m)/(Rslow1+n) (V)；

Wherein, 0.5≤K≤5, m=1, n=1;

The motivation value of setting current time color data is that the computing formula of Vnew, motivation value Vnew is such as formula shown in (VI);

Vnew＝Vold+S*Vstep (VI)；

Vold is the motivation value of last sampling instant, Vstep is the updated value that above-mentioned formula (V) calculates, if the value of the Vsample_new that present sample obtains is greater than Vold, then S is 1, if the value of the Vsample_new that present sample obtains is less than Vold, then S is-1, and wherein S is for upgrading direction symbol; The motivation value calculated is sent to luminous driver module by control module, and luminous driver module controls environment lighting system.

Control method of the present invention compared with prior art, not be directly used in driving light emitting module by according to the color data of the data source conversions such as video image audio frequency, and be through certain process, make the change of surround lighting and transition more level and smooth, and its rate of transition size (speed degree) can regulate automatically according to the statistics variations situation of data source, the transition that can slow down prevents from suddenling change the situation of the flicker caused, again can when fast-changing sight, accelerate the speed of transition, to alleviate beholder's visual fatigue, strengthen visual experience.

Control method of the present invention, according to the statistics of time period color change situation and data source step change degree, can adopt adaptive change renewal rate, with filtering mutation disturbance, and can follow the tracks of the change of violent color very well rapidly.

Further, described P (v|w _f) value along with the increase of difference Vdelta continuous print monotonic increase, P (v|w _s) value along with the increase of difference Vdelta continuous print monotone decreasing.

Further, described difference Vdelta and P (v|w _f) and P (v|w _s) database of relation is: v is writing a Chinese character in simplified form of Vdelta, and vmax is maximum difference, P (v=0|w _f)=0.05, P (v=v _max| w _f)=0.95; p (v=0|w _s)=0.95, P (v=v _max| w _s)=0.05.

Described contextual model symbol fast or slow the earliest in first memory in T time section to be shifted out, and according to the attribute situation of this symbol shifted out the Rfast value in second memory and Rslow value done and subtract being operating as of 1 renewal: when the symbol shifted out is fast, then in second memory, the Rfast of T time section subtracts 1; When the symbol shifted out is slow, then in second memory, the Rslow of T time section subtracts 1.

Control method of the present invention has the following advantages:

1) utilize alterable to upgrade the treatment mechanism of amplitude, improve the deficiency in the flexibility of fixed value tracking mode, the dynamic experience of enhance ambient light.Control method smooth color data of the present invention, can the color data of filtering sudden change, again can adaptive quickening rate of change under fast-changing sight, and the visual environment strengthening experiencer is experienced;

2) cost is low, and control method of the present invention directly can add the illuminator with ambient light applications and control;

3) applied range, can be applied in the ambient light system of display device (such as TV, computer) or audio frequency apparatus (MP3 etc.) etc.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the present invention is described in further details;

The connection diagram of the module that Fig. 1 applies for control method of the present invention.

Embodiment

Below in conjunction with embodiment, the present invention is further detailed explanation:

As shown in Figure 1, the invention discloses the control method of the ambient light adaptive rate of change based on audio & video equipment, the module that described control method is applied comprises behavior color processing module, control module, luminous driver module, first memory, second memory and the 3rd memory, the output of color processing module is connected with control module, control module respectively with luminous driver module, first memory, second memory are connected with the 3rd memory;

Audio & video equipment output sound video data, audio, video data is processed into corresponding color data by color processing module, then temporally color data is sent to control module by sampling order, and the audio, video data that audio & video equipment exports is divided into violent contextual model and soft contextual model;

Described first memory is the memory of first-in first-out, and control module is first prestored into the symbol fast of the violent contextual model of N number of representative in a first memory, and the symbol slow of the soft contextual model of the representative of same number, and sequencing is random; The number Rfast of the symbol fast of violent contextual model is recorded in described second memory, and the number Rslow of the symbol slow of soft contextual model;

Control module, according to the reception order of color data, calculates the difference Vdelta of adjacent double sampling Vsample_old and Vsample_new color data,

Wherein, when the difference Vdelta of the color data that the color data that known current time receives and previous moment receive, setting current time is the probability of violent contextual model is P (w _f| v); Wherein, according to statistics Bayes formula, P (w _f| v) such as formula shown in (I);

$P\left(w_f|v\right)=\frac{P\left(v|w_f\right)P\left(w_f\right)}{P\left(v\right)}---\left(I\right);$

P (v|w _f) for known be violent contextual model when difference Vdelta occur probability, P (w _f) be the probability that contextual model violent in a period of time T before current time occurs, the probability that P (v) occurs for difference Vdelta, can adjust the size in T interval according to Human Perception actual conditions, the value of T is: 0.5 second≤T≤4 second;

When the value of T is determined, be prestored into N number of symbol fast in a first memory, and the number N in N number of symbol slow is also determined, the frequency of 2N=T* sampling processing.

When the difference Vdelta of the color data that the color data that known current time receives and previous moment receive, setting current time is the probability of soft contextual model is P (w _s| v), wherein, P (w _s| v) such as formula shown in (II);

$P\left(w_s|v\right)=\frac{P\left(w_s|v\right)P\left(w_s\right)}{P\left(v\right)}---\left(II\right);$

P (v|w _s) for known be soft contextual model when difference Vdelta occur probability, P (w _s) probability that occurs for soft contextual model in a period of time T before current time, the probability that P (v) occurs for difference Vdelta;

Wherein, factor (I) is identical with the denominator of formula (II) two formula, P (w _f) value is such as formula shown in (III), for known, wherein, Rfast is the number of the fast symbol stored in T time section second memory, and Rslow is the number of the slow symbol stored in T time section second memory; $P\left(w_f\right)=\frac{R_{fast}}{R_{slow}+R_{fast}}---\left(III\right);$

P (w _s) value such as formula shown in (IV), be also known;

$P\left(w_s\right)=\frac{R_{s1ow}}{R_{slow}+R_{fast}}---\left(IV\right);$

According to existing data, set up difference Vdelta and P (v|w _f) and P (v|w _s) database of relation, described database purchase is in the 3rd memory; Described P (v|w _f) value along with the increase of difference Vdelta continuous print monotonic increase, P (v|w _s) value along with the increase of difference Vdelta continuous print monotone decreasing.

Such as, described difference Vdelta and P (v|w _f) and P (v|w _s) database of relation can be: v is writing a Chinese character in simplified form of Vdelta, and vmax is maximum difference, P (v=0|w _f)=0.05, P (v=v _max| w _f)=0.95; p (v=0|w _s)=0.95, P (v=v _max| w _s)=0.05.

According to known difference Vdelta, controller is from P (v|w corresponding to the data base call of the 3rd memory _f) and P (v|w _s), and then calculate corresponding P (w _f| v) with P (w _s| v) value;

As P (w _f| v) be greater than P (w _s| v) during value, current time is violent contextual model, and the symbol in a first memory stored in current time is fast, and adds 1 to the Rfast value of T time section in second memory; As P (w _f| v) be less than P (w _s| v) during value, current time is soft contextual model, and the symbol in a first memory stored in current time is slow, and adds 1 to the Rslow value of T time section in second memory; Then contextual model symbol fast or slow the earliest in first memory in T time section is shifted out, and according to the attribute situation of this symbol shifted out the Rfast value in second memory and Rslow value done and subtract 1 renewal, be specially: when the symbol shifted out is fast, then in second memory, the Rfast of T time section subtracts 1; When the symbol shifted out is slow, then in second memory, the Rslow of T time section subtracts 1; Rfast value after setting second memory upgrades and Rslow value are respectively Rfast1 value and Rslow1 value;

Setting updated value is that the computing formula of Vstep, updated value Vstep is such as formula shown in (V);

Vstep＝K*Vdelta*(Rfast1+m)/(Rslow1+n) (V)；

Wherein, 0.5≤K≤5, m=1, n=1;

The motivation value of setting current time color data is that the computing formula of Vnew, motivation value Vnew is such as formula shown in (VI);

Vnew＝Vold+S*Vstep (VI)；

Vold is the motivation value of last sampling instant, Vstep is the updated value that above-mentioned formula (V) calculates, if the value of the Vsample_new that present sample obtains is greater than Vold, then S is 1, if the value of the Vsample_new that present sample obtains is less than Vold, then S is-1, and wherein S is for upgrading direction symbol; Such as, when Vold is 255, sampling processing value Vsample_new is 20, and because the value of Vsample_new is less than Vold, then S is-1, Vnew=Vold – Vstep.

The motivation value calculated is sent to luminous driver module by control module, and luminous driver module controls environment lighting system.Control method of the present invention compared with prior art, not be directly used in driving light emitting module by according to the color data of the data source conversions such as video image audio frequency, and be through certain process, make the change of surround lighting and transition more level and smooth, and its rate of transition size (speed degree) can regulate automatically according to the statistics variations situation of data source, the transition that can slow down prevents from suddenling change the situation of the flicker caused, again can when fast-changing sight, accelerate the speed of transition, to alleviate beholder's visual fatigue, strengthen visual experience.

Control method of the present invention, according to the statistics of time period color change situation and data source step change degree, can adopt adaptive change renewal rate, with filtering mutation disturbance, and can follow the tracks of the change of violent color very well rapidly.

Claims (4)

1. based on the control method of the ambient light adaptive rate of change of audio & video equipment, it is characterized in that: the module that described control method is applied comprises behavior color processing module, control module, luminous driver module, first memory, second memory and the 3rd memory, the output of color processing module is connected with control module, and control module is connected with luminous driver module, first memory, second memory and the 3rd memory respectively;

Audio & video equipment output sound video data, audio, video data is processed into corresponding color data by color processing module, then temporally color data is sent to control module by sampling order, and the audio, video data that audio & video equipment exports is divided into violent contextual model and soft contextual model;

Described first memory is the memory of first-in first-out, and control module is first prestored into the symbol fast of the violent contextual model of N number of representative in a first memory, and the symbol slow of the soft contextual model of the representative of same number; The number Rfast of the symbol fast of violent contextual model is recorded in described second memory, and the number Rslow of the symbol slow of soft contextual model;

Control module, according to the reception order of color data, calculates the difference Vdelta of adjacent double sampling Vsample_old and Vsample_new color data,

Wherein, when the difference Vdelta of the color data that the color data that known current time receives and previous moment receive, setting current time is the probability of violent contextual model is P (w _f| v); Wherein, according to statistics Bayes formula, P (w _f| v) such as formula shown in (I);

$P\left(w_f\right|v)=\frac{P\left(v\right|w_f)P\left(w_f\right)}{P\left(v\right)}---\left(I\right);$

P (v|w _f) for known be violent contextual model when difference Vdelta occur probability, P (w _f) probability that occurs for violent contextual model in a period of time T before current time, the probability that P (v) occurs for difference Vdelta, 0.5 second≤T≤4 second; When the difference Vdelta of the color data that the color data that known current time receives and previous moment receive, setting current time is the probability of soft contextual model is P (w _s| v), wherein, P (w _s| v) such as formula shown in (II);

$P\left(w_s\right|v)=\frac{P\left(v\right|w_s)P\left(w_s\right)}{P\left(v\right)}---\left(II\right);$

P (v|w _s) for known be soft contextual model when difference Vdelta occur probability, P (w _s) probability that occurs for soft contextual model in a period of time T before current time, the probability that P (v) occurs for difference Vdelta;

Wherein, factor (I) is identical with the denominator of formula (II) two formula, P (w _f) value is such as formula shown in (III), for known, wherein, Rfast is the number of the fast symbol stored in T time section second memory, and Rslow is the number of the slow symbol stored in T time section second memory; $P\left(w_f\right)=\frac{R_{fast}}{R_{slow}+R_{fast}}---\left(III\right);$

P (w _s) value such as formula shown in (IV), be also known;

$P\left(w_s\right)=\frac{R_{slow}}{R_{slow}+R_{fast}}---\left(IV\right);$

According to existing data, set up difference Vdelta and P (v|w _f) and P (v|w _s) database of relation, described database purchase is in the 3rd memory; According to known difference Vdelta, controller is from P (v|w corresponding to the data base call of the 3rd memory _f) and P (v|w _s), and then calculate corresponding P (w _f| v) with P (w _s| v) value;

As P (w _f| v) be greater than P (w _s| v) during value, current time is violent contextual model, and the symbol in a first memory stored in current time is fast, and adds 1 to the Rfast value of T time section in second memory; As P (w _f| v) be less than P (w _s| v) during value, current time is soft contextual model, and the symbol in a first memory stored in current time is slow, and adds 1 to the Rslow value of T time section in second memory; Then contextual model symbol fast or slow the earliest in first memory in T time section is shifted out, and according to the attribute situation of this symbol shifted out the Rfast value in second memory and Rslow value done and subtract 1 renewal, the Rfast value after setting second memory upgrades and Rslow value are respectively Rfast1 value and Rslow1 value;

Setting updated value is that the computing formula of Vstep, updated value Vstep is such as formula shown in (V);

Vstep＝K*Vdelta*(Rfast1+m)/(Rslow1+n) (V)；

Wherein, 0.5≤K≤5, m=1, n=1;

The motivation value of setting current time color data is that the computing formula of Vnew, motivation value Vnew is such as formula shown in (VI); Vnew=Vold+S*Vstep (VI);

Vold is the motivation value of last sampling instant, Vstep is the updated value that above-mentioned formula (V) calculates, if the value of the Vsample_new that present sample obtains is greater than Vold, then S is 1, if the value of the Vsample_new that present sample obtains is less than Vold, then S is-1, and wherein S is for upgrading direction symbol; The motivation value calculated is sent to luminous driver module by control module, and luminous driver module controls environment lighting system.

2. the control method of the ambient light adaptive rate of change based on audio & video equipment according to claim 1, is characterized in that: described P (v|w _f) value along with the increase of difference Vdelta continuous print monotonic increase, P (v|w _s) value along with the increase of difference Vdelta continuous print monotone decreasing.

3. the control method of the ambient light adaptive rate of change based on audio & video equipment according to claim 2, is characterized in that: described difference Vdelta and P (v|w _f) and P (v|w _s) database of relation is: v is writing a Chinese character in simplified form of Vdelta, v _maxfor maximum difference, P (v=0|w _f)=0.05, P (v=v _max| w _f)=0.95; $P\left(v\right|w_s)=\frac{0.05-0.95}{v_{max}-0}v+0.95,$ P(v＝0|w _s)＝0.95，P(v＝v _max|w _s)＝0.05。

4. the control method of the ambient light adaptive rate of change based on audio & video equipment according to claim 1, it is characterized in that: described contextual model symbol fast or slow the earliest in first memory in T time section to be shifted out, and according to the attribute situation of this symbol shifted out the Rfast value in second memory and Rslow value done and subtract being operating as of 1 renewal: when the symbol shifted out is fast, then in second memory, the Rfast of T time section subtracts 1; When the symbol shifted out is slow, then in second memory, the Rslow of T time section subtracts 1.