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Image composition device and image composition method

A technology of image synthesis and synthesizer, which is applied in image communication, image data processing, graphics and image conversion, etc., and can solve problems such as increased loss, occupation, and poor performance

Inactive Publication Date: 2004-05-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the readout of non-updated and thus unnecessary image data occupies many buses, which leads to poor performance of the device and increases wear and tear

Method used

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  • Image composition device and image composition method
  • Image composition device and image composition method
  • Image composition device and image composition method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0019] FIG. 1 is a block diagram showing the structure of an image synthesizing apparatus according to a first embodiment of the present invention.

[0020] In FIG. 1, an image data storage 100 stores a large amount of image data. Therefore, when any one of the stored plurality of image data #1-#N is updated by an unshown means for outputting image data, such as a camera, the image data memory 100 outputs to the synthesizer 110 an indication which Update history information where image data is updated. When the update history information is output from the image data storage 100, the synthesizer 110 reads out only the updated image data among the plurality of data #1-#N according to this output update history information. Then, the synthesizer 110 uses the read image data and the fixed color data output from the fixed data output terminal 130 to generate an updated composite image.

[0021] The display control generator 120 generates a display control information including t...

Embodiment 2

[0041] FIG. 3 is a block diagram showing the structure of an image synthesizing apparatus according to a second embodiment of the present invention. The same parts in FIG. 3 as in FIG. 1 use the same reference numerals as in FIG. 1 and will not be explained again.

[0042] One of the characteristics of the present invention is that when a certain amount of image data to be synthesized has overlapping portions, the synthesizing order of the image data is controlled by generating display control information according to the priority of the image data. Incidentally, the priority of the image data refers to an order in which the plurality of image data are overlapped and the image data of high priority is overlapped on the image data of low priority.

[0043] Referring to FIG. 3 , the composition sequence controller 200 outputs, to the synthesizer 100 and the display control information generator 120, priority information for determining which image data each image data overlaps w...

Embodiment 3

[0063] A feature of the third embodiment is that, when a large amount of image data to be synthesized has overlapping portions, an update synthesized image and display control information are generated according to the priority of the image data for controlling the image synthesizing order.

[0064] Incidentally, the structure of the image synthesizing apparatus according to the present embodiment is the same as that of the image synthesizing apparatus ( FIG. 3 ) of the second embodiment.

[0065] In the present embodiment, as in the first and second embodiments, when one of the stored image data #1-#N is updated with an unshown means for outputting image data such as a camera , update history information indicating which image data is to be updated is output to the synthesizer 110 . Then, based on the update history information, the synthesizer 110 only reads out the updated image data.

[0066]Then, on the basis that the MPU 140 controls the synthesizer 110 and the priority...

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Abstract

An image composition device and an image composition method for composing an image while occupying fewer buses, enhancing performance, and saving power. An image data storage unit (100) generates update history information representing which image data has been updated. A composing unit (110) reads only updated image data according to the update history information to generate composition image updating data. A display control information generator (120) generates display control information including transparent data and nontransparent data that respectively indicate the transparent part and nontransparent part of the composition image updating data. A writing unit (150) writes the composition image updating data into a composition image storage unit (160). In this case, the writing unit (150) transmits a part corresponding to the transparent data, but does not transmit a part corresponding to the nontransparent data, of the display control information to overwrite previously generated composition image with the composition image updating data.

Description

technical field [0001] The present invention relates to an image synthesis device and an image synthesis method. Background technique [0002] In recent years, in communication terminal devices typified by mobile phones, image data such as changes in display images from black-and-white images to color images have greatly increased. Therefore, images such as still images, moving images, and graphics must be synthesized on the display. For example, an image synthesizing apparatus for synthesizing a plurality of image data on a display is disclosed in Unexamined Japanese Patent Application Publication No. HEI6-274155. [0003] However, with the conventional image synthesizing apparatus, when, for example, graphic image data and moving image data are combined, if only one of them is updated, the graphic image data and the moving image data are read out from a memory and added to synthesis. As a result, the readout of image data that is not updated and thus not needed occupies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00G09G5/14G09G5/377G09G5/393G09G5/397H04N1/387H04N5/265
CPCG09G2310/04G09G5/393G09G2320/103G09G5/14G09G5/397G09G2340/12
Inventor 池田正树伊藤博之
Owner PANASONIC CORP
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