CN1256471A - TV picture album data making method - Google Patents

Abstract

By means of self-adaptation technology, user's images in batches are converted into MPEG document fast through computer analysis rather than subjective judgement of operator. The present invention has the advantages of high efficiency, simple operation and easy commercial use, and may be used in making TV picture album in commercial batches to display clearly the lovely graph, pictures and other self-made graphs on the TV screen.

Description

The method for making of TV picture album data

The present invention relates to a kind of method for making of TV picture album data, particularly a kind of method for making by mpeg decode device TV picture album data of explicit user image on televisor.

TV picture album shows consumer's picture, photo or other homemade picture and text by television screen with higher sharpness, because Chinese most families all have televisor, therefore vast market prospect is arranged.But in its business promotion process, the method for making of TV picture album data is a key.In the present method for making, generally adopt general MPEG compressed software, the processing of a width of cloth figure one width of cloth figure, in the compression process of each width of cloth figure, need adjust compressibility coefficient repeatedly, seem that like this process is loaded down with trivial details, and need professional person's operation, thereby influenced the business promotion of TV picture album greatly.

The object of the present invention is to provide a kind of method for making of TV picture album data, can make things convenient for, promptly user images in batch is made into TV picture album data, on televisor, user images is shown by the mpeg decode device.

The object of the present invention is achieved like this, the data of TV picture album finally are to be stored in the memory of mpeg decode device, and user images in batch can be shown by this decoding device on televisor, the concrete method for making of TV picture album data adopts computing machine to carry out, and includes following steps:

A. set initial compression coefficient and definitive document size;

B. carry out batch MPEG compressing and converting for the user images of needs conversion;

Whether c. size and the reference size with each output file compares, all be near state.If, then change step e over to, then change steps d if not over to;

D. just do not need the recompression conversion for the user images that wherein output file is big or small and reference size is approaching, but for the output file size user images littler wherein than reference size, just reduce corresponding compressibility coefficient, otherwise, just increase compressibility coefficient, and its difference is big more, and the correction degree is just big more, forwards step b then to;

E. then that these are final mpeg file is converted to and is applicable to the binary data stream corresponding with the mpeg decode device, thereby has finished the making of TV picture album data.

Because the present invention has utilized adaptive technique, replace operator's subjective judgement to realize being mpeg file with batch user's image transitions apace with Computer Analysis, thereby improved the efficient of making TV picture album data greatly, operated also easyly, do not needed the professional person.And because final mpeg file size all near reference size, therefore can be stablized the memory space that reasonably utilizes in the decoding device.

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

Fig. 1 is the principle of explanation self-adaptation batch processing method institute foundation.

Fig. 2 is the process data of MPEG compressing and converting in the explanation present embodiment.

Fig. 3 is the process flow diagram of explanation present embodiment.

The size of compressibility coefficient and output mpeg file and the relation between the image quality are as shown in Figure 1.X-axis is represented compressibility coefficient i in Fig. 1, Y-axis representative output mpeg file size s, the image quality that on behalf of human eye, P differentiate.As can be seen from Figure 1, human eye has very big tolerance to the subjective assessment of image quality, as long as compressibility coefficient is not big to export mpeg file when too small to making, the image after the compression is can satisfy human eye to the requirement of image quality.And output mpeg file size is an objective value, and it will be subjected to mpeg decode device and the wherein restriction of memory.So whether suitable main objective standard is the size of output mpeg file to be used to estimate the compressibility coefficient setting.

Among Fig. 1, f1 and f2 represent the compressed figure of two quasi-representatives, and wherein the color lump details of f1 is many and the color lump details of f2 is few, and therefore, under identical compressibility coefficient i0, s1 is different with s2 for both output size.When commercialization ground batch making TV picture album, can not tackle certain figure by operator's subjective judgement according to the color lump details of each width of cloth user images etc. certain compressibility coefficient is set.Therefore, method that should the most handy self-adaptation batch processing.

The process data of 19 width of cloth user images being carried out adaptive M PEG batch processing by present embodiment as shown in Figure 2.

X-axis representative of consumer figure number among Fig. 2, Y-axis is represented the big or small result of output file, ● represent the result that the first time, the batch preliminary operation changed, zero represents the result of self-adaptation batch processing, ▲ representing the initial compression coefficient, △ represents the compressibility coefficient after the self-adaptation.

Referring to Fig. 3, the first step, it is 7 that computing machine is provided with the initial compression coefficient to 19 user images unifications changing in batches, the reference size of final output file is 25kB, carries out the batch compressing and converting first time, and the size that obtains output file has nothing in common with each other, maximum reached at 74kB, undesirable.

In second step, computing machine is provided with the compressibility coefficient of each figure according to the size of each output file and the difference correction of reference size, carries out once batch compressing and converting again with these new compressibility coefficient then.

As seen from the figure, the curve that the second time of each figure, compressibility coefficient constituted adapts to fully automatically and has followed the tracks of the curve that the first time, the output file size was constituted, and the file size of the output second time that forms so all about 25kB, meets the requirements.

Mpeg file must be converted to and be applicable to and the corresponding binary data stream of mpeg decode device in batches, could show on TV.

In the present embodiment, pairing mpeg decode device adopts the CL-484 or the CL-680 chip of U.S. C-CUBE company, for this reason, referring to Fig. 3, should carry out mpeg file single treatment connection and writing management information to n output, thereby the TV picture album data of finishing one batch is made, and specifically may further comprise the steps:

F. open first mpeg file with scale-of-two, read 2 bytes successively to array element C1 and C2, order by array element C2, C1 writes a binary file again, circulation is up to the end of this mpeg file data, if the data of this mpeg file are made of the odd number byte, then the end byte is rewritten as OOB7;

G. add up this mpeg file and write fashionable start address, length, as first data management information;

H. to whole mpeg file circulation repeating step f and g, and statistics writes user images width of cloth number in this binary file, with as second data management information;

I. first data management information and second data management information are write in this binary file and gone.

Claims (2)

1. the method for making of a TV picture album data, these data can write in the memory of mpeg decode device, and user images in batch can be shown on televisor by this mpeg decode device, this method is carried out with computing machine, it is characterized in that including following steps:

A. set initial compression coefficient and definitive document size;

B. carry out batch MPEG compressing and converting for the user images of needs conversion;

Whether c. size and the reference size with each output file compares, all be near state, if then change step e over to, otherwise change steps d over to;

D. just do not need the recompression conversion for the user images that wherein output file is big or small and reference size is approaching, but for the output file size user images littler wherein than reference size, just reduce corresponding compressibility coefficient, otherwise, just increase compressibility coefficient, and its difference is big more, and the correction degree is just big more, forwards step b then to;

E. then that these are final mpeg file is converted to and is applicable to the binary data stream corresponding with the mpeg decode device, thereby has finished the making of TV picture album data.

2. the method for making of TV picture album data as claimed in claim 1 is characterized in that:

Described mpeg decode device adopts the CL-484 or the CL-680 chip of U.S. C-CUBE company, is converted in the binary data stream process that is applicable to this decoding device at the described mpeg file that these are final, may further comprise the steps:

F. open first mpeg file with scale-of-two, read 2 bytes successively to array element C1 and C2, order by array element C2, C1 writes a binary file again, circulation is up to the end of this mpeg file data, if the data of this mpeg file are made of the odd number byte, then the end byte is rewritten as OOB7;

G. add up this mpeg file and write fashionable start address, length, as first data management information;

H. circulation repeats frequently rapid f and g to whole mpeg files, and statistics writes user images width of cloth number in this binary file, with as second data management information;

I. first data management information and second data management information are write in this binary file and gone.

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