CN107203971A - The gradual loading method of sampled images - Google Patents
The gradual loading method of sampled images Download PDFInfo
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- CN107203971A CN107203971A CN201710629397.4A CN201710629397A CN107203971A CN 107203971 A CN107203971 A CN 107203971A CN 201710629397 A CN201710629397 A CN 201710629397A CN 107203971 A CN107203971 A CN 107203971A
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- 238000011068 loading method Methods 0.000 title claims abstract description 26
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 230000008521 reorganization Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 6
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Editing Of Facsimile Originals (AREA)
Abstract
The present invention provides a kind of gradual loading method of sampled images, and it comprises the following steps：The size, the resolution ratio of display screen and one subgraph resolution ratio of setting of crude sampling image are obtained, and calculates image and splits parameter, and crude sampling image is split into subgraph；The current resolution of display screen is obtained and updated in real time, a subgraph i is chosen and is shown as display subgraph, or more subgraphs are chosen according to the difference of current resolution and is shown with subgraph i restructuring.So make it that first loading is fast, the image of first reference resolution is loaded with for the first time to be shown, and realizes gradual loading, can be realized by obscuring clear effect.
Description
Technical field
The invention belongs to medical domain, more particularly to a kind of gradual loading method of sampled images.
Background technology
In medical imaging device, the resolution ratio (length and width) of the single file of X-ray DR, CR etc. image file all compares
Greatly, general length and width are between 2000-4000.And if necessary to which when web system shows medical image, user wishes that system can be carried
Can be the method for first showing summary and then displaying the details of again for a kind of method of rapid image loaded and displayed.This effect is similar
Image shows that effect that mosaic gradually shows.
And realize in image display process, particularly show this kind of big in the less equipment of the screen such as mobile phone and flat board
During medical image, the length or width of mobile phone and flat board screen resolution may be between 300-1000.Therefore may be most
Start to load and show that an image slightly larger than screen resolution is relatively good method during display, then as the contracting of user
The image that operation reloads a bigger resolution ratio such as put.
Tradition has two class ways：
On be loaded directly into full resolution image, Zoom display is then done according to screen resolution.This way because
Image file is larger, and the load time is long, needs to wait long time when display for the first time.
According to screen resolution and viewing area (screen may be only able to display a part for image), in server end
The image of a corresponding region is downloaded, is then shown in browser end.This mode is taught flexibly, but needs repeatedly to download figure
Picture, therefore flow consumption is more, although and the image downloaded every time less, also have certain stand-by period.
The content of the invention
To solve the above problems, the present invention provides a kind of gradual loading method of sampled images, it comprises the following steps：
Size a*b, the resolution ratio g*h of display screen of crude sampling image are obtained, and sets the basis point of a subgraph
Resolution A*B, and figure is calculated according to the reference resolution A*B of the resolution ratio a*b of the crude sampling image, the subgraph
The subgraph that c*d size is A*B is split into as splitting parameter c*d, and by crude sampling image, wherein c is more than a/A and tightly
By its integer and for 2 e power, d be more than b/B and against its integer and be 2 f power, wherein e and f are just whole
Number, and e >=1, f >=1；
The current resolution g*h of display screen is obtained and updates in real time,
Work as A=g, and during B=h, choose one of them described subgraph i and shown；
Work as g/A=m, during B/h=n, choose 2 in addition to subgraph im+n- 1 subgraph simultaneously recombinates it with subgraph i
It has been shown that, wherein m and n are positive integer, and m≤c, n≤d；
When working as g/A=o, B/h=p, and o ＞ m, p ＞ n, 2 are choseno+p-2m+nIndividual segment subgraph and and before 2m+nIt is individual
Subgraph restructuring shown, wherein o and p are positive integer, and m≤c, n≤d.
Preferably, in the gradual loading method of described sampled images, the subgraph i is the crude sampling image
In the most upper left corner, the lower left corner, the subgraph in the upper right corner or the lower right corner.
Preferably, in the gradual loading method of described sampled images, remaining in addition to subgraph i 2m+n- 1
Subgraph turns into square with subgraph i splicings and shown.
Preferably, in the gradual loading method of described sampled images, 2 are choseno+p-2m+nIndividual subgraph and and before
2m+nWhen individual sub- image reorganization is shown, will be described before 2m+nIndividual subgraph as stitching image the most upper left corner, lower-left
The image at angle, the upper right corner or the lower right corner, and by itself and 2o+p-2m+nIndividual sub- image mosaic is shown into square..
The present invention provides a kind of gradual loading method of sampled images, has the advantages that：
First loading is fast, and the image of first reference resolution is loaded with for the first time to be shown.
Gradual loading, can be realized by obscuring clear effect.If the target resolution of screen is more than current figure
During the resolution ratio of picture, you can the remaining part of loading is assembled into the image of bigger resolution ratio for display.This behavior is circulated until group
The image of original resolution is taken on or untill the resolution ratio of image that assembles is more than display resolution
Save flow.The image for needing to show most only is loaded with first, and during display, maximum image
Whole original images are exactly loaded with, without as second of conventional method, there is what loading section image was discarded again
Behavior.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
The signal of the image reorganization of the one embodiment for the gradual loading method of sampled images that Fig. 1 provides for the present invention
Figure；
Fig. 2 is shown for the image reorganization of another embodiment of the gradual loading method of sampled images provided using the present invention
It is intended to.
Embodiment
The present invention is described in further detail below, to make those skilled in the art being capable of evidence with reference to specification word
To implement.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or many
The presence or addition of individual other elements or its combination.
The present invention provides a kind of gradual loading method of sampled images, and it comprises the following steps：
Size a*b, the resolution ratio g*h of display screen of crude sampling image are obtained, and sets the basis point of a subgraph
Resolution A*B, and figure is calculated according to the reference resolution A*B of the resolution ratio a*b of the crude sampling image, the subgraph
The subgraph that c*d size is A*B is split into as splitting parameter c*d, and by crude sampling image, wherein c is more than a/A and tightly
By its integer and for 2 e power, d be more than b/B and against its integer and be 2 f power, wherein e and f are just whole
Number, and e >=1, f >=1；
The current resolution g*h of display screen is obtained and updates in real time,
Work as A=g, and during B=h, choose one of them described subgraph i and shown；
Work as g/A=m, during B/h=n, choose 2 in addition to subgraph im+n- 1 subgraph simultaneously recombinates it with subgraph i
It has been shown that, wherein m and n are positive integer, and m≤c, n≤d；
When working as g/A=o, B/h=p, and o ＞ m, p ＞ n, 2 are takeno+p-2m+nIndividual segment subgraph and and before 2m+nHeight
Image reorganization shown, wherein o and p are positive integer, and m≤c, n≤d.
In the gradual loading method of described sampled images, the subgraph i be the original image in the most upper left corner,
The subgraph in the lower left corner, the upper right corner or the lower right corner.
In the gradual loading method of described sampled images, remaining in addition to subgraph i 2m+n- 1 subgraph and son
Image i splicings turn into square and shown.
In the gradual loading method of described sampled images, 2 are choseno+p-2m+nIndividual subgraph and and before 2m+nIndividual subgraph
As restructuring shown when, will be described before 2m+nIndividual subgraph as stitching image the most upper left corner, the lower left corner, the upper right corner
Or the image in the lower right corner, and by itself and 2o+p-2m+nIndividual sub- image mosaic is shown into square..
Resolution ratio and the resolution ratio of screen of the invention according to crude sampling image, and consider the length of network download time
It is short, the image resolution ratio of a benchmark is first set up, then original image is split into 2 n times power of this reference resolution, so
Afterwards in display according to the target resolution size for needing to show, reconstructing to be slightly larger than in browser end needs display resolution
2 M (M<=N) power image be used for show.
As an example it is assumed that the size of crude sampling image is the image of wide 2000 length 2000, and figure is shown on mobile phone
Reference resolution is set during picture as 512*512, then 2 power more than 2000 is 2048, then crude sampling image can be split
Into 4*4 subgraph, each subgraph size is 512*512.So most start first to load first son during display display
Image can quickly go out preview graph.If the resolution ratio of equipment is more than 512 and is less than 1024, reconstructing resolution ratio is
1024*1024 image is used to show.When user does zoom operations to image, the image resolution ratio of actual displayed be more than 1024 and
During less than or equal to 2048, then reconstruct resolution ratio be 2048 image be used for show.
The method for splitting of image：The original resolution of known image and the reference resolution of display, then it is known that original
Resolution ratio is the multiple to reference resolution, as above in example, the length of original image and it is wide be all 4 times of reference resolution.Original
Beginning image splits into 4*4 subgraph of the wide sizes of the long * of reference resolution.
Image rebuilding method：During first display, the image by first loaded and displayed of most upper left corner subgraph (can be certainly
Fixed, such as upper right is left small, bottom right can).If desired, it is necessary to it will be assumed benchmark during the image of display 1024*1024 sizes
Resolution ratio is that the image in the most upper left corner of 1024*1024 broken away view is shown.It is included due in preceding Sub-reso
The subgraph in the upper left corner of 512*512 resolution ratio, then only need to loaded and displayed the other three 512*512 subgraph, and
By this 4 512*512 subgraph composite assembly into 1024*1024 resolution ratio image.And so on, if necessary to show
During the image of 2048*2048 resolution ratio, with reference to the image of existing 1024 resolution ratio, the other three 1024*1024 is reloaded
Image, and assemble 2048 sizes image come.
When initial resolution is 512, when image size is 2048, that is, when showing the 512*512 figure of resolution ratio, such as Fig. 1
It is shown, the image that one of them subgraph for being expressed as 1 is assembled into 512*512 is extracted, during display 1024*1024, new load table
2 three subgraphs are shown as, and the image for assembling 1024*1024 resolution ratio with the subgraph for being expressed as 1 comes.As shown in Fig. 2
When showing 2048*2048, new loading is expressed as 3 12 subgraphs, and and is expressed as 1 subgraph and is expressed as 2 subgraph
As the image for assembling 2048*2048 resolution ratio comes.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (4)
1. the gradual loading method of sampled images, it is characterised in that comprise the following steps：
Size a*b, the resolution ratio g*h of display screen of crude sampling image are obtained, and sets the reference resolution of a subgraph
A*B, and image is calculated according to the resolution ratio a*b of the crude sampling image, the subgraph reference resolution A*B torn open
Divide parameter c*d, and crude sampling image is split into the subgraph that c*d size is A*B, wherein c is more than a/A and against it
Integer and for 2 e power, d be more than b/B and against its integer and be 2 f power, wherein e and f are positive integer, and
E >=1, f >=1；
The current resolution g*h of display screen is obtained and updates in real time,
Work as A=g, and during B=h, choose one of them described subgraph i and shown；
Work as g/A=m, during B/h=n, choose 2 in addition to subgraph im+nIt is simultaneously recombinated progress by -1 subgraph with subgraph i
It has been shown that, wherein m and n are positive integer, and m≤c, n≤d；
When working as g/A=o, B/h=p, and o ＞ m, p ＞ n, 2 are choseno+p-2m+nIndividual subgraph and and before 2m+nIndividual subgraph weight
Group shown, wherein o and p are positive integer, and o≤c, p≤d.
2. the gradual loading method of sampled images as claimed in claim 1, it is characterised in that the subgraph i is the original
The subgraph in the most upper left corner, the lower left corner, the upper right corner or the lower right corner in beginning sampled images.
3. the gradual loading method of sampled images as claimed in claim 2, it is characterised in that remaining is in addition to subgraph i
2m+n- 1 subgraph turns into square with subgraph i splicings and shown.
4. the gradual loading method of sampled images as claimed in claim 3, it is characterised in that choose 2o+p-2m+nIndividual subgraph
And and before 2m+nWhen individual sub- image reorganization is shown, will be described before 2m+nIndividual subgraph is used as the most left of stitching image
Upper angle, the lower left corner, the image in the upper right corner or the lower right corner, and by itself and 2o+p-2m+nIndividual sub- image mosaic is shown into square.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710629397.4A CN107203971B (en) | 2017-07-28 | 2017-07-28 | Progressive loading method for sampled image |
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| CN201710629397.4A CN107203971B (en) | 2017-07-28 | 2017-07-28 | Progressive loading method for sampled image |
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| CN107203971B CN107203971B (en) | 2021-03-12 |
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| CN108021345A (en) * | 2017-12-26 | 2018-05-11 | 国网重庆市电力公司电力科学研究院 | A kind of image browsing method, system, equipment and computer-readable storage medium |
| CN109062651A (en) * | 2018-08-01 | 2018-12-21 | 深圳Tcl新技术有限公司 | Picture loading method, device, storage medium and the intelligent terminal at the interface UI |
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