CN102572304A - Image addition processing method and device - Google Patents
Image addition processing method and device Download PDFInfo
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- CN102572304A CN102572304A CN2011104183243A CN201110418324A CN102572304A CN 102572304 A CN102572304 A CN 102572304A CN 2011104183243 A CN2011104183243 A CN 2011104183243A CN 201110418324 A CN201110418324 A CN 201110418324A CN 102572304 A CN102572304 A CN 102572304A
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Abstract
The invention provides an image addition processing method which comprise the following steps of: setting the transparency of each image layer, wherein the sum of transparency of all image layers is less than or equal to 1; obtaining pixel values, effective values and transparency of pixels of all image layers at the same position; calculating the product sum of the pixel values, effective values and transparency of pixels of all image layers at the same position; and displaying the product sum of all image layers at the same position. The invention provides an image addition processing device which can simultaneously add a plurality of image layers, improve addition processing efficiency of the plurality of image layers and can display the image layers in real time.
Description
Technical field
The present invention relates to multimedia technology field, be specifically related to a kind of image overlay processing method and device.
Background technology
Image overlay technology widespread when the translucent superimposing technique of present existing image, each overlap-add procedure, generally only limits to the stack of 2 tomographic images, i.e. 1 image layers to be superimposed and 1 background layer in video equipment.For the multi-layer image stack, need to accomplish the stack of All Layers through 2 tomographic image overlap-add procedure repeatedly; Need a large amount of memory space memory images, amount of calculation is big simultaneously, and computing time is long, is difficult to real-time demonstration, and when the number of plies increased, resource and the computing time consumed were multiplied.
Summary of the invention
The objective of the invention is to propose a kind of multi-layer image superposition processing method, the multi-layer image that can superpose simultaneously, the overlap-add procedure efficient of raising multi-layer image shows in real time.
Based on above-mentioned purpose, the technical scheme of employing is:
A kind of image overlay processing method comprises step:
(1) transparent value that each schemes layer is set, wherein, transparency sum of each figure layer is less than or equal to 1;
(2) obtain pixel value, effective value and the transparent value that each schemes the pixel of layer same position;
(3) calculate the sum of products of pixel value, effective value and transparent value of the pixel of each figure layer same position;
(4) with All Layers at the sum of products of same position in this position display.
In the inventive method, transparent value is set, obtains pixel value, effective value and the transparent value of each figure layer same position pixel then to each figure layer; Calculate the product of pixel value, effective value and the transparent value of each figure layer same position pixel simultaneously, then each product addition of scheming pixel value, effective value and the transparent value of layer same position pixel is obtained sum of products; With All Layers at the sum of products of same position in this position display; Can carry out the stack of multi-layer image simultaneously like this, improve the efficient of image overlay, show in real time to show.
The objective of the invention is to propose a kind of multi-layer image overlap-add procedure device, the multi-layer image that can superpose simultaneously, the overlap-add procedure efficient of raising multi-layer image shows in real time.
Based on above-mentioned purpose, the technical scheme of employing is:
A kind of image overlay processing unit comprises:
The unit is set, is used to be provided with the transparent value of each figure layer, wherein, the transparency sum of each figure layer is smaller or equal to 1;
Acquiring unit is used to obtain pixel value, effective value and the transparent value that each schemes the pixel of layer same position;
Computing unit is used to calculate the sum of products of pixel value, effective value and transparent value of the pixel of each figure layer same position;
Output unit is used for All Layers at the sum of products of same position in this position display.
In the inventive method, transparent value is set, obtains pixel value, effective value and the transparent value of each figure layer same position pixel then to each figure layer; Calculate the product of pixel value, effective value and the transparent value of each figure layer same position pixel simultaneously, then each product addition of scheming pixel value, effective value and the transparent value of layer same position pixel is obtained sum of products; With All Layers at the sum of products of same position in this position display; Can carry out the stack of multi-layer image simultaneously like this, improve the efficient of image overlay, show in real time to show.
Description of drawings
Fig. 1 is the embodiment flow chart of the inventive method;
Fig. 2 A is the data effective value distribution schematic diagram of a figure layer in the embodiment of the invention;
Fig. 2 B is the data effective value distribution schematic diagram of another figure layer in the embodiment of the invention;
Fig. 2 C is the data effective value distribution schematic diagram of another figure layer in the embodiment of the invention;
Fig. 3 is a structural representation of apparatus of the present invention.
Embodiment
For ease of understanding the present invention, will combine accompanying drawing to set forth below.
The present invention proposes a kind of image overlay processing method, please refer to Fig. 1, comprises step:
101, the transparent value of each figure layer is set;
The transparent value of each figure layer is set, and wherein, the transparency sum of each figure layer is less than or equal to 1.
102, obtain pixel value, effective value and the transparent value of the pixel of each figure layer same position;
103, calculate the sum of products of pixel value, effective value and the transparent value of each pixel of scheming layer same position;
104, according to the range upon range of data that add of sum of products output map.
With All Layers at the sum of products of same position in this position display.
In the inventive method, transparent value is set, obtains pixel value, effective value and the transparent value of each figure layer same position pixel then to each figure layer; Calculate the product of pixel value, effective value and the transparent value of each figure layer same position pixel simultaneously, then each product addition of scheming pixel value, effective value and the transparent value of layer same position pixel is obtained sum of products; With All Layers at the sum of products of same position in this position display; Can carry out the stack of multi-layer image simultaneously like this, improve the efficient of image overlay, show in real time to show.
As a concrete execution mode, need to suppose 3 figure layers of stack, be respectively figure layer A, figure layer B and figure layer C; The transparent value that figure layer A is set is that (span of transparent value can be 0 to 1 numerical value to q1; Wherein, 1 expression is opaque, and 0 expression is transparent; Numeric representation between 0 to 1 is translucent), the data effective value of its pixel distributes like Fig. 2 A; Constitute a data effective value matrix
Each data effective value can represent that wherein 0 expression data are invalid with 0 or 1, and 1 expression data are effective;
The transparent value of figure layer B is q2, and the data effective value of its pixel distributes like Fig. 2 B; Constitute a data effective value matrix
The transparent value of figure layer C is q3, and the data effective value of its pixel distributes like Fig. 2 C; Constitute a data effective value matrix
Obtain the pixel value X1 of figure layer A position 1 pixel; The pixel value Y1 of figure layer B position 1 pixel; The pixel value Z1 of figure layer C position 1 pixel, then the sum of products of three figure layers pixel value, effective value and transparent value of 1 in the position is: X1*a11*q1+Y1*b11*q2+Z1*c11*q3; The sum of products of position 1 pixel value, effective value and transparent value is presented at position 1;
The sum of products of three figure layers 2 pixel value, effective value and transparent value in the position is: X1*a12*q1+Y1*b12*q2+Z1*c12*q3; The sum of products of position 2 pixel values, effective value and transparent value is presented at position 2;
The sum of products of three figure layers 3 pixel value, effective value and transparent value in the position is: X1*a13*q1+Y1*b13*q2+Z1*c13*q3; The sum of products of position 3 pixel values, effective value and transparent value is presented at position 3;
The sum of products of three figure layers 4 pixel value, effective value and transparent value in the position is: X1*a21*q1+Y1*b21*q2+Z1*c21*q3; The sum of products of position 4 pixel values, effective value and transparent value is presented at position 4;
The sum of products of three figure layers 5 pixel value, effective value and transparent value in the position is: X1*a22*q1+Y1*b22*q2+Z1*c22*q3; The sum of products of position 5 pixel values, effective value and transparent value is presented at position 5;
The sum of products of three figure layers 6 pixel value, effective value and transparent value in the position is: X1*a23*q1+Y1*b23*q2+Z1*c23*q3; The sum of products of position 6 pixel values, effective value and transparent value is presented at position 6;
The sum of products of three figure layers 7 pixel value, effective value and transparent value in the position is: X1*a31*q1+Y1*b31*q2+Z1*c31*q3; The sum of products of position 7 pixel values, effective value and transparent value is presented at position 7;
The sum of products of three figure layers 8 pixel value, effective value and transparent value in the position is: X1*a32*q1+Y1*b32*q2+Z1*c32*q3; The sum of products of position 8 pixel values, effective value and transparent value is presented at position 8;
The sum of products of three figure layers 9 pixel value, effective value and transparent value in the position is: X1*a33*q1+Y1*b33*q2+Z1*c33*q3; The sum of products of position 9 pixel values, effective value and transparent value is presented at position 9;
Accomplish the stack of 3 figure layers thus.
In the present invention, can use R (red component), G (green component), B (blue component) to represent the color of a pixel, when carrying out image overlay, comprise step so:
Obtain pixel value, effective value and the transparent value of the red component of each pixel of scheming layer same position; And, the pixel value of green component, effective value and transparent value, and, the pixel value of blue component, effective value and transparent value;
Calculate the sum of products of pixel value, effective value and the transparent value of each red component of scheming layer same position respectively, the sum of products of the pixel value of green component, effective value and transparent value, and the sum of products of the pixel value of blue component, effective value and transparent value;
According to the range upon range of data that add of the sum of products output map of red component, blue component and green component.
Can also represent the color of a pixel with the YCbCr color space, wherein Y representes brightness, and Cb representes blue color difference, and Cr representes red color; When carrying out image overlay, comprise step:
Obtain pixel value, effective value and the transparent value of the brightness of each pixel of scheming layer same position; And, the pixel value of green aberration, effective value and transparent value, and, the pixel value of blue color difference, effective value and transparent value;
Calculate the sum of products of pixel value, effective value and transparent value of brightness of the pixel of each figure layer same position respectively, the sum of products of the pixel value of green aberration, effective value and transparent value, and the sum of products of the pixel value of blue color difference, effective value and transparent value;
According to the sum of products of brightness, the sum of products of blue color difference and the range upon range of data that add of sum of products output map of green aberration.
A kind of image overlay processing unit that the present invention proposes please refer to Fig. 3, comprising:
Unit T1 is set, is used to be provided with the transparent value of each figure layer, wherein, the transparency sum of each figure layer is less than or equal to 1;
Acquiring unit T2 is used to obtain pixel value, effective value and the transparent value that each schemes the pixel of layer same position;
Computing unit T3 is used to calculate the sum of products of pixel value, effective value and transparent value of the pixel of each figure layer same position;
Output unit T4 is used for All Layers at the sum of products of same position in this position display.
In the inventive method, transparent value is set, obtains pixel value, effective value and the transparent value of each figure layer same position pixel then to each figure layer; Calculate the product of pixel value, effective value and the transparent value of each figure layer same position pixel simultaneously, then each product addition of scheming pixel value, effective value and the transparent value of layer same position pixel is obtained sum of products; With All Layers at the sum of products of same position in this position display; Can carry out the stack of multi-layer image simultaneously like this, improve the efficient of image overlay, show in real time to show.
Wherein, when acquiring unit T2 obtains pixel value, effective value and the transparent value of pixel, obtain pixel value, effective value and the transparent value of red component of the pixel of each figure layer same position; And, the pixel value of green component, effective value and transparent value, and, the pixel value of blue component, effective value and transparent value;
When computing unit T3 calculates; Calculate the sum of products of pixel value, effective value and transparent value of red component of the pixel of each figure layer same position respectively; The sum of products of the pixel value of green component, effective value and transparent value, and the sum of products of the pixel value of blue component, effective value and transparent value;
Output unit T4 with All Layers at the sum of products of red component, blue component and the green component of the pixel of same position in this position display.
Wherein, when acquiring unit T2 obtains pixel value, effective value and the transparent value of pixel, obtain pixel value, effective value and the transparent value of brightness of the pixel of each figure layer same position; And, the pixel value of green aberration, effective value and transparent value, and, the pixel value of blue color difference, effective value and transparent value;
When computing unit T3 calculates; Calculate the sum of products of pixel value, effective value and transparent value of brightness of the pixel of each figure layer same position respectively; The sum of products of pixel value, effective value and the transparent value of green aberration, and the sum of products of the pixel value of blue color difference, effective value and transparent value;
Output unit T4 with All Layers at the sum of products of the sum of products of the sum of products of the brightness of the pixel of same position, blue color difference and green aberration in this position display.
Above embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (6)
1. an image overlay processing method is characterized in that, comprises step:
(1) transparent value that each schemes layer is set, wherein, transparency sum of each figure layer is less than or equal to 1;
(2) obtain pixel value, effective value and the transparent value that each schemes the pixel of layer same position;
(3) calculate the sum of products of pixel value, effective value and transparent value of the pixel of each figure layer same position;
(4) with All Layers at the sum of products of same position in this position display.
2. image overlay processing method according to claim 1 is characterized in that,
Said step (2) comprising: pixel value, effective value and the transparent value of obtaining the red component of each pixel of scheming layer same position; And, the pixel value of green component, effective value and transparent value, and, the pixel value of blue component, effective value and transparent value;
Said step (3) comprising: the sum of products that calculates pixel value, effective value and the transparent value of each red component of scheming layer same position respectively; The sum of products of the pixel value of green component, effective value and transparent value, and the sum of products of the pixel value of blue component, effective value and transparent value;
In said step (4), with All Layers at the sum of products of red component, blue component and the green component of the pixel of same position in this position display.
3. image overlay processing method according to claim 1 is characterized in that,
Said step (2) comprising: pixel value, effective value and the transparent value of obtaining the brightness of each pixel of scheming layer same position; And, the pixel value of green aberration, effective value and transparent value, and, the pixel value of blue color difference, effective value and transparent value;
Said step (3) comprising: the sum of products of pixel value, effective value and transparent value of brightness that calculates the pixel of each figure layer same position respectively; The sum of products of pixel value, effective value and the transparent value of green aberration; And the sum of products of the pixel value of blue color difference, effective value and transparent value;
In said step (4), with All Layers at the sum of products of the sum of products of the sum of products of the brightness of the pixel of same position, blue color difference and green aberration in this position display.
4. an image overlay processing unit is characterized in that, comprising:
The unit is set, is used to be provided with the transparent value of each figure layer, wherein, the transparency sum of each figure layer is less than or equal to 1;
Acquiring unit is used to obtain pixel value, effective value and the transparent value that each schemes the pixel of layer same position;
Computing unit is used to calculate the sum of products of pixel value, effective value and transparent value of the pixel of each figure layer same position;
Output unit is used for All Layers at the sum of products of same position in this position display.
5. image overlay processing unit according to claim 4 is characterized in that,
When said acquiring unit obtains pixel value, effective value and the transparent value of pixel, obtain pixel value, effective value and the transparent value of red component of the pixel of each figure layer same position; And, the pixel value of green component, effective value and transparent value, and, the pixel value of blue component, effective value and transparent value;
When said computing unit calculates, calculate the sum of products of pixel value, effective value and transparent value of red component of the pixel of each figure layer same position respectively; The sum of products of the pixel value of green component, effective value and transparent value; And the sum of products of the pixel value of blue component, effective value and transparent value;
Said output unit with All Layers at the sum of products of red component, blue component and the green component of the pixel of same position in this position display.
6. image overlay processing unit according to claim 4 is characterized in that,
When said acquiring unit obtains pixel value, effective value and the transparent value of pixel, obtain pixel value, effective value and the transparent value of brightness of the pixel of each figure layer same position; And, the pixel value of green aberration, effective value and transparent value, and, the pixel value of blue color difference, effective value and transparent value;
When said computing unit calculates, calculate the sum of products of pixel value, effective value and transparent value of brightness of the pixel of each figure layer same position respectively; The sum of products of pixel value, effective value and the transparent value of green aberration; And the sum of products of the pixel value of blue color difference, effective value and transparent value;
Said output unit with All Layers at the sum of products of the sum of products of the sum of products of the brightness of the pixel of same position, blue color difference and green aberration in this position display.
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Application publication date: 20120711 |