Method and device for segmenting bitmap (BMP) image with ultra-high resolution
A technology of ultra-high resolution and resolution, applied in the field of ultra-high-resolution BMP image segmentation methods and devices, can solve the problems of long time consumption, inability to realize JPEG format image segmentation, and occupying a large memory resource, etc., to achieve Short time-consuming, memory-saving, and easy-to-operate effects
Active Publication Date: 2012-06-27
HUAWEI TEHCHNOLOGIES CO LTD
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Problems solved by technology
PS technology cannot meet the requirements for image segmentation in the field of splicing display. First, because most of the images it processes are JPEG format images; When the number of pictures to be divided is large, it will take a long time
Experiments have proved that a computer with 4G memory cannot realize the segmentation of a JPEG format image with a resolution of 22400×6300 using PS technology
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[0024] The segmentation method of the ultra-high resolution BMP picture of the present invention, to the ultra-high resolution BMP picture that is difficult to divide, first it is divided into the picture of smaller resolution, then the format is converted into the mainstream picture format suitable for display, and finally according to The general method divides the picture again. The method will be explained in detail below in conjunction with the accompanying drawings and embodiments.
[0025] The segmentation method of super high resolution BMP picture of the present invention, as figure 1 shown, including steps:
[0026] Step 1. Pre-segment the ultra-high-resolution BMP image. After the pre-segmentation, the resolution of each BMP image is balanced between the time-consuming pre-segmentation and the resolution of the image that can be processed by an ordinary computer;
[0027] Step 2, respectively converting each BMP picture after the pre-segmentation into a picture of...
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The invention discloses a method and a device for segmenting a bitmap (BMP) image with ultra-high resolution, which includes: firstly pre-segmenting the BMP image with the ultra-high resolution, lowering the resolution of the image to a degree capable of being processed by a common computer, performing format conversion to the pre-segmented BMP image, converting the BMP image into a format capable of being processed by the common computer, and finally segmenting the image after format conversion again according to a conventional method to reach target resolution so as to be suitable for splicing wall display. Due to the fact that the image is segmented twice, segmentation of the BMP image with the ultra-high resolution is achieved, a middle process is simple to operate, and the method and the device for segmenting the BMP image with the ultra-high resolution are short in time consumption, small in occupied resources and particularly suitable for segmentation of the BMP image with the ultra-high resolution and save internal memory.
Description
technical field [0001] The invention relates to the technical field of graphics processing, in particular to a method and device for segmenting super-high resolution BMP pictures. Background technique [0002] In the field of splicing display, it is necessary to display ultra-high resolution pictures. For example, a video wall with 96 display units requires the background picture to be a picture in BMP format with a resolution of 22400×6300. In order to be suitable for each display unit to display, the background image needs to be segmented, and the segmented image is a JPEG format image with a resolution of 1400×1050. The segmentation process must not only ensure time efficiency, but also ensure the clarity of the image, and reduce the utilization of memory resources. [0003] Regarding image segmentation, the prior art generally adopts Photoshop software (PS technology for short) to realize. PS technology cannot meet the requirements for image segmentation in the field ...
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Inventor 宋美威
Owner HUAWEI TEHCHNOLOGIES CO LTD