Image Processing Apparatus Tile Sequence Conversion Memory Optimization
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Solution Overview
Problem
Existing image processing techniques for converting page image data into tile sequence format often result in a significant increase in memory usage, especially when dealing with page images containing a large number of objects, leading to increased buffer size requirements.
Innovation Solution
An image processing apparatus that employs a control unit to selectively perform conversion processing using either raster or vector methods, determining the optimal method based on the number of objects and print settings to minimize memory usage, thereby reducing the buffer size required for tile sequence conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If tile sequence conversion processing is performed on image data in vector format to reduce buffer size, then buffer size requirement is reduced, but memory size increases significantly when page image includes a great number of objects
Solution Approach 1:
The system dynamically switches between raster format and vector format based on the number of objects in the page image. When the number of objects exceeds a predetermined threshold, it converts to raster format to reduce memory usage. This dynamic adaptation resolves the contradiction by selecting the optimal format according to actual image content characteristics.
Solution Approach 2:
The invention changes the data representation parameter (format type) from vector to raster based on the number of objects. This parameter change allows the system to optimize memory usage by selecting the more efficient representation method for different image contents, thereby resolving the memory size increase issue.
2Productivity
If tile sequence conversion processing is performed on page images with many objects using vector format, then processing capability is maintained, but buffer size becomes excessively large
Solution Approach 1:
The system dynamically adapts the processing method based on image content. When the number of objects is large, it switches to raster format conversion which requires smaller buffer size while maintaining processing capability. This dynamic switching resolves the contradiction between processing capability and buffer size requirements.
Solution Approach 2:
The system creates a copy of the image data in raster format when vector format produces excessively large buffers. This raster copy serves as an alternative representation that maintains processing capability while significantly reducing the buffer size requirement, thus resolving the contradiction.
Data Source
AI summary
An image processing apparatus including a memory includes a first conversion method configured to perform conversion processing for converting an image represented by span information in page line sequence into span information in tile sequence, using the memory; a second conversion unit configured to perform conversion processing for converting an image represented by pixel information in page line sequence into pixel information in tile sequence, using the memory; and a control unit configured to control a conversion unit employing a less usage amount of the memory used in a case that a process target image is converted into tiles, of the first conversion unit and the second conversion unit, to perform the conversion processing on the process target image.