CN106604025A - Method and apparatus for measuring multi-primary-color gamut coverage - Google Patents

Abstract

The invention puts forward a method and an apparatus for measuring the multi-primary-color gamut coverage. The method comprises the following steps: acquiring the reference primary color coordinates of a reference color gamut and the contrast primary color coordinates of a display device color gamut; generating a plurality of random points on a color gamut map, and detecting the generation positions of the random points; when detecting that the generation position of one random point is within a closed area formed by the reference primary color coordinates of the reference color gamut, increasing a first count value of occurrence of the random points in the reference color gamut; when detecting that the random point is also in a closed area formed by the contrast primary color coordinates of the display device color gamut, increasing a second count value of occurrence of the random points in the display device color gamut; and when the number of random points generated reaches a preset value, measuring the multi-primary-color gamut coverage according to the first count value and the second count value. The method and the apparatus are universal, reliable and practical.

Description

The measuring method and device of multiple bases color domain coverage ratio

Technical field

The present invention relates to color domain coverage ratio fields of measurement, more particularly to a kind of measurement side of multiple bases NTSC coverage rate Method and device.

Background technology

What the number of colors that colour gamut refers to certain equipment (display screen, printing equipment or printer) and can express was constituted Range areas.Colour gamut is bigger, and a kind of degree of color that the equipment can be showed is abundanter, and color is more gorgeous.

NTSC coverage rate is for weighing the size of colour gamut important indicator, current display device NTSC colors The measuring method of domain coverage ratio be by measure display screen colour gamut with reference to the overlap gamut area of colour gamut measuring NTSC Coverage rate, is more suited to the measurement of three primary colours display device NTSC coverage rate, however, the primary colours of high-end field display device Number is gradually increasing, and in order to truly reduce the color of nature, embodies the display details of display device, is overlapped by measuring Gamut area is measuring the mode of NTSC coverage rate, it is difficult to which the NTSC for measuring the more display device of number of primary colors covers Lid rate.

The content of the invention

Based on this, the present invention proposes a kind of measuring method and device of multiple bases NTSC coverage rate, being capable of measurement base The NTSC coverage rate of the more display device of chromatic number mesh.

A kind of measuring method of multiple bases NTSC coverage rate, comprises the following steps：

Obtain the reference primary coordinate with reference to colour gamut；

Obtain the control primary coordinate of display device colour gamut；

Produce random point and detect the generation position of the random point；

If random point produce position in reference to colour gamut reference primary coordinate constitute closed area in, increase with Machine point is in the first count value occurred with reference to colour gamut；

If the position that produces of random point is in the closed area that the control primary coordinate of display device colour gamut is constituted simultaneously, Then increase the second count value that random point occurs in display device colour gamut；

If random point produces number of times reaches preset times, according to the first count value and the second count value measurement multiple bases NTSC coverage rate, wherein, the multiple bases NTSC coverage rate is equal to second count value divided by the first count value.

A kind of measurement apparatus of multiple bases NTSC coverage rate, including：

With reference to primary coordinate acquisition module, for obtaining the reference primary coordinate with reference to colour gamut；

Control primary coordinate acquisition module, for obtaining the control primary coordinate of display device colour gamut；

Random point is produced and detection module, for producing random point and detecting the generation position of the random point；

First count value increases module, if producing position in the reference primary coordinate structure with reference to colour gamut for random point Into closed area in, then increase random point with reference to colour gamut occur the first count value；

Second count value increases module, if producing position simultaneously in the control base of display device colour gamut for random point In the closed area that chromaticity coordinates is constituted, then increase the second count value that random point occurs in display device colour gamut；

Multiple bases NTSC coverage measure module, if producing number of times for random point reaches preset times, basis First count value and the second count value measurement multiple bases NTSC coverage rate, wherein, the multiple bases NTSC Coverage rate is equal to second count value divided by the first count value.

The measuring method and device of above-mentioned multiple bases NTSC coverage rate, obtain with reference to colour gamut reference primary coordinate with And the control primary coordinate of display device colour gamut, several random points are successively produced in gamut map and the random point is detected Position is produced, if the position that produces for detecting random point is in the closed area constituted with reference to the reference primary coordinate of colour gamut, Then increase random point in the first count value occurred with reference to colour gamut, if detecting the random point while being also at display device colour gamut The closed area that constitutes of control primary coordinate in, then increase the second count value for occurring in display device colour gamut of random point, when Random point number reach it is a certain amount of after, covered according to the first count value for obtaining and the second count value measurement multiple bases NTSC Lid rate, wherein, the multiple bases NTSC coverage rate is equal to second count value divided by the first count value.The present invention's is more The measuring method and device of primary colours NTSC coverage rate by producing several random points in gamut map, if the product of random point Raw position is simultaneously more in the number of times with reference to colour gamut and display device colour gamut, then the NTSC for illustrating display device is covered Rate is bigger, can measure the NTSC colors of the multiple bases display device including three primary colours, four primary or five primary colours above display devices Domain coverage ratio, accurately embodies the color gamut of multiple bases display device, possesses versatility, dependable with function.

Description of the drawings

Fig. 1 is the measuring method schematic flow sheet of the multiple bases NTSC coverage rate in one embodiment；

Fig. 2 is the three primary colours gamut map in one embodiment；

Fig. 3 is five primary colours gamut maps in one embodiment；

Fig. 4 is the measurement apparatus structural representation of the multiple bases NTSC coverage rate in one embodiment.

Specific embodiment

In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and It is not used in the restriction present invention.

Fig. 1 is referred to, in one embodiment, a kind of measuring method of multiple bases NTSC coverage rate, including following step Suddenly：

S10：Obtain the reference primary coordinate with reference to colour gamut；

S11：Obtain the control primary coordinate of display device colour gamut；

S12：Some random points are produced in the gamut map being located with reference to colour gamut and display device colour gamut and detect The generation position of the random point；

S13：If the position that produces of the random point is in the closed area constituted with reference to the reference primary coordinate of colour gamut, Then increase random point in the first count value occurred with reference to colour gamut；

S14：If the envelope for producing control primary coordinate composition of the position simultaneously in display device colour gamut of the random point In closed region, then increase the second count value that random point occurs in display device colour gamut；

S15：According to first count value and the second count value measurement multiple bases NTSC coverage rate, wherein, institute Multiple bases NTSC coverage rate is stated equal to second count value divided by the first count value.

Colour gamut is a kind of method encoded to color, refers to the summation of the color that technological system can be produced, and is also referred to aobvious The range areas that the number of colors that showing equipment (display screen, printing equipment or printer) can express is constituted.Colour gamut is bigger, A kind of degree of color that the equipment can be showed is abundanter, and color is more gorgeous.

Described can be TSC-system reference colour gamut with reference to colour gamut, and NTSC is (NTSC) National The abbreviation of Television Standards Committee is standard television broadcast transmission and receives agreement.TSC-system reference Colour gamut refers to the summation of the color under NTSC standard, can be vivid for each primary colours degree of TSC-system reference colour gamut, reference by gamut map Primary coordinate is apex coordinate of the TSC-system with reference to colour gamut planar graph.The color expressive ability of display device and its colour gamut phase Close, directly influence perception of the user to display device, display device colour gamut refers to the number of colors that display device can show, right According to the apex coordinate that primary coordinate is display device colour gamut planar graph.As Fig. 2 three primary colours colour gamut schematic diagram, solid line constitute Triangle is display device colour gamut, and the triangle that dotted line is constituted is TSC-system with reference to colour gamut, (x_R, y_R), (x_G, y_G) and (x_B, y_B) it is red coordinate of the TSC-system with reference to colour gamut, green coordinate and blue coordinate.

The number of primary colors of display device colour gamut can be multiple, and in one embodiment, the display device colour gamut is three primary colours Display device colour gamut above display device colour gamut；

The polygon constituted according to the control primary coordinate of display device colour gamut is closed polygon more than triangle.

The display device colour gamut is more than three primary colours display device colour gamut, four primary display device colour gamut or five primary colours to show Show device color gamut, correspondingly, according to display device colour gamut control primary coordinate constitute polygon be triangle, quadrangle or Closed polygon more than pentagon, specifically, three primary colours display device colour gamut has three kinds of bases of RGB for display device colour gamut The display device of color, four primary display device colour gamut for four kinds of primary colours of red, green, blue and yellow display device, five primary colours display device colors Domain is the display device of red, green, blue and yellow five kinds of primary colours of green grass or young crops, according to three kinds of primary colours of RGB of display device colour gamut, primary coordinate structure Into polygon be triangle, according to four kinds of primary colours of red, green, blue and yellow of display device colour gamut, primary coordinate constitute polygon be Quadrangle, according to red, green, blue and yellow five kinds of primary colours of green grass or young crops of display device colour gamut, the polygon that primary coordinate is constituted is pentagon.

First count value be random point in the number of times produced with reference to colour gamut, when detecting the generation position of random point in reference In the closed area that colour gamut is constituted, then the first count value is added 1.Second count value is random point both in the reference with reference to colour gamut In the closed area that primary coordinate is constituted, while being also in the closed area that the control primary coordinate of display device colour gamut is constituted When number of times, i.e. the second count value is generation number of times of the random point in the overlap colour gamut with reference to colour gamut and display device colour gamut, Then the second count value is added 1.

The multiple bases NTSC coverage rate is equal to second count value divided by the first count value, and the measuring method can For measuring the multiple bases NTSC colors of the display device colour gamut for having multiple bases colour gamuts more than three primary colours, four primary or five primary colours Domain coverage ratio, is specifically represented by following formula：

Wherein, a_crossFor NTSC coverage rate, N_NTSCBe random point with reference to colour gamut occur the first count value, N_cross It is random point while in display device colour gamut and in the second count value occurred with reference to colour gamut.

The number that random point is produced can be set by arranging the method for circulation, and a circulation produces a random point.Under Face illustrates the mistake of the multiple bases NTSC coverage rate that display device colour gamut is measured by the formula by an instantiation Journey.

For example, Fig. 3 is referred to, it is 1000 times to arrange cycle-index, arranges N_NTSCAnd N_crossInitial value be 0, by looking into Ask national television standard and obtain TSC-system and be respectively with reference to the red coordinate of the reference primary coordinate of colour gamut, green coordinate and indigo plant coordinate (0.670,0.330), (0.210,0.710) and (0.140,0.080), and measure the triangle that the reference primary coordinate is constituted Area S_NTSCEqual to 0.1582, be measured as by measuring instrument such as colorimeter the display device colour gamut of five primary colours red coordinate, Yellow coordinate, green coordinate, blue or green coordinate and blue coordinate be respectively (0.680,0.310), (0.475,0.501), (0.160,0.700), (0.085,0.350) and (0.132,0.055), and measure five primary coordinates of the display device colour gamut of five primary colours and surround Pentagon area be 0.2021.In circulating each time, possessing the colour gamut of display device colour gamut and TSC-system with reference to colour gamut Random point is being produced on figure, random point is first being detected whether in TSC-system reference colour gamut, if by N_NTSCValue add 1, Ran Houjian Random point is surveyed whether simultaneously in display device colour gamut, if by N_crossValue add 1, cycle-index reaches 1000 times and gives birth to After 1000 random points, N is obtained_NTSCAnd N_crossValue be 165 and 159, show in 1000 circulations, 1000 of generation with Machine point is 165 times with reference to the occurrence number of colour gamut in TSC-system, in TSC-system with reference to colour gamut and the overlap color of display device colour gamut The number of times that domain occurs is 159 times, substitutes into formula

Calculate, the multiple bases NTSC coverage rate of the display device is 96.4%.

If the cycle-index for not up to arranging, continue subsequent cycle, produce a random point, and obtain it is described with The abscissa and ordinate of machine point, then repeats the measurement process of above-mentioned NTSC coverage rate.

Can in several ways detect that random point, whether with reference in colour gamut, in one embodiment, increases described first Before count value, comprise the following steps：

Measure the area S of the triangle that the reference primary coordinate is constituted_NTSC；

The reference primary coordinate on any two summit of the triangle that traversal is constituted with reference to the reference primary coordinate of colour gamut, surveys Measure the area and S of the reference colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs_NTSCsum；

If S_NTSCAnd S_NTSCsumIt is equal, then increase by first count value.

If the area S of the triangle constituted with reference to the reference primary coordinate of colour gamut_NTSCWith random point and appointing with reference to colour gamut The area and S of the reference colour triangle that two adjacent vertexs of meaning are constituted_NTSCsumIt is equal, show that the random point for producing is present in ginseng According to colour gamut, then increase random point in counts N occurred with reference to colour gamut_NTSC。

Can in several ways detect random point whether while being present in reference in colour gamut and display device colour gamut, one In individual embodiment, before increasing by second count value, comprise the following steps：

The polygonal area S that the measurement control primary coordinate is constituted_poly；

The control primary colours on the polygonal any two summit that the control primary coordinate of traversal display device colour gamut is constituted are sat Mark, measures the area and S that compare colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs_polysum；

If S_polyAnd S_polysumIt is equal, and S_NTSCAnd S_NTSCsumIt is equal, then increase by second count value.

If the area S of the triangle constituted with reference to the reference primary coordinate of colour gamut_NTSCWith random point and appointing with reference to colour gamut The area and S of the reference colour triangle that two adjacent vertexs of meaning are constituted_NTSCsumIt is equal, also, the control of display device colour gamut The polygonal area S that primary coordinate is constituted_polyWith any two adjacent vertex composition of random point and display device colour gamut The area and S of control colour triangle_polysumIt is equal, then increase the second count value that random point occurs in display device colour gamut, Show the random point for producing while being present in reference in colour gamut and display device colour gamut.

In an optional embodiment, the control primary coordinate of display device colour gamut is obtained, and measure the control The area of a polygon S that primary coordinate is constituted_polyWhen, comprise the following steps：

Polygonal each apex coordinate that the control primary coordinate of display device colour gamut is constituted is obtained, according to polygon vertex Order is designated as respectively C₁(x₁, y₁), C₂(x₂, y₂)…C_n(x_n, y_n), C_n+1(x_n+1, y_n+1)；Wherein, C₁For described polygonal One summit, x₁And y₁For the abscissa and ordinate on first summit respectively；C₂For polygonal first summit, x₂ And y₂For the abscissa and ordinate on second summit respectively；C_n+1For polygonal first summit, x_n+1And y_n+1To divide The abscissa and ordinate on other first summit；

According to polygonal each summit abscissa and ordinate, the right of display device colour gamut is measured in such a way According to the area of a polygon that primary coordinate is constituted：

Wherein, S_polyFor the area of a polygon that the control primary coordinate of display device colour gamut is constituted, x_iAnd y_iTo be respectively The abscissa and ordinate on i summit, x_i+1And y_i+1The respectively abscissa and ordinate on i+1 summit.

The formula of the area of a polygon that the control primary coordinate of above-mentioned measurement display device colour gamut is constituted possesses versatility.Under Face is illustrated by an instantiation.Table 1 is the display device colour gamut of five primary colours obtained by measuring instrument such as colorimeter Control primary coordinate table, the pentagon that five primary coordinates of display device colour gamut are surrounded arranges according to polygon vertex order It is as follows.C₁For pentagonal first summit, C₂For pentagonal second summit, C₃For described pentagonal Three summits, C₄For pentagonal 4th summit, C₅For pentagonal 5th summit.

Table 1

Summit	Abscissa	Ordinate
			C1	0.680	0.310
C2	0.475	0.501
			C3	0.160	0.700
C4	0.085	0.350
			C5	0.132	0.055

The coordinate value on pentagonal five summits is substituted into into measure equationIn, Try to achieve the area of a polygon S that the control primary coordinate of display device colour gamut is constituted_polyFor 0.2021.

In an optional embodiment, polygonal that the control primary coordinate of display device colour gamut is constituted is traveled through The control primary coordinate on two summits of meaning, the measurement random point compares colour gamut three with arbitrarily described two adjacent vertexs compositions Angular area and S_polysum, comprise the following steps：

Obtain the corresponding abscissa x of random point_RanWith ordinate y_Ran；

The area of each control colour triangle is measured in such a way：

Wherein, S_tri,iFor the colour triangle area that random point and i-th are constituted with i+1 summit, x_iAnd y_iTo divide Not Wei i-th summit abscissa and ordinate, x_i+1And y_i+1The respectively abscissa and ordinate on i+1 summit, x_RanWith x_RanThe respectively corresponding abscissa of random point and ordinate；

The area of each control colour triangle that adds up in such a way：

Wherein, S_polysumFor the face for compareing colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs Product and S_tri,iFor random point and the area for compareing colour triangle for constituting with i+1 summit for i-th.

In an optional embodiment, any the two of the triangle that traversal is constituted with reference to the reference primary coordinate of colour gamut The reference primary coordinate on individual summit, measures the reference colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs Area and S_NTSCsum, comprise the following steps：

Obtain the corresponding abscissa x of random point_RanWith ordinate y_Ran；

Obtain reference colour gamut three refer to primary colours abscissa x_R、x_GAnd x_B, and three refer to primary colours ordinate y_R、y_GWith y_B；

The reference colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs is measured in such a way Area and S_NTSCsum：

Wherein, S_NTSCsumThe face of the reference colour triangle constituted with arbitrarily described two adjacent vertexs for the random point Product and x_RanAnd x_RanThe respectively corresponding abscissa of random point and ordinate, x_R、x_GAnd x_BIt is to refer to base with reference to three of colour gamut Color abscissa, y_R、y_GAnd y_BIt is with reference to primary colours ordinate with reference to three of colour gamut.

Illustrate below by an instantiation.Table 2 is by inquiring about the reference colour gamut that national television standard is obtained With reference to primary coordinate table, arrange as follows according to polygon vertex order with reference to the triangle that surrounds of three primary coordinates of colour gamut. Red coordinate is first summit of the triangle, and green coordinate is second summit of the triangle, and blue coordinate is described three The 3rd angular summit.

Table 2

Summit	x	y
			Red coordinate	0.670	0.330
Green coordinate	0.210	0.710
			Blue coordinate	0.140	0.080

According to the coordinate value on three summits of the triangle, by making supreme people's court or Method of Cosine or other measurement gores Long-pending method solve the triangle area S_NTSCEqual to 0.1582.Obtain the corresponding abscissa x of random point_RanWith vertical seat Mark y_Ran, by S_NTSCsumComputing formula measure random point with it is red it is green while, it is turquoise while and red blue side three triangles constituting Area and, if certain produce random point after, detect random point be in reference in colour gamut or be in red-green line section, turquoise line segment or Red blue line section any point position, then this measurement random point with it is red it is green while, it is turquoise while and constitute three of red blue side The area and S of triangle_NTSCsumWith the area S with reference to colour gamut_NTSCIt is equal, then increase random point in first occurred with reference to colour gamut Count value；If certain is produced after random point, random point is overseas in reference colored, then green with red in the random point of this measurement While, it is turquoise while and the area of three triangles that constitutes of red blue side and S_NTSCsumWith the area S with reference to colour gamut_NTSCIt is unequal, then Keep random point constant in the first count value occurred with reference to colour gamut.

The random point number scope can be arranged according to actual needs, in an optional embodiment, random point Number scope is 1000～1000000.

The scope of the random point number scope of setting can be 1000,10000,100000,1000000, can lead to The mode for crossing setting circulation produces random point, by the larger of cycle-index scope setting, can improve multiple bases NTSC and cover The calculating accuracy of lid rate, but not no maximum, it is to avoid cause very much program crashing greatly in amount of calculation, and cycle-index scope is excessive The calculating time of needs is longer, can affect computational efficiency, and the random point number scope is 1000～1000000, respective cycle The scope of numbers range is 1000 times～1000000 times, and it is reasonable to arrange, it is ensured that the calculating accuracy of NTSC coverage rate with And computational efficiency.Further illustrate below by table 3.

Table 3

As shown in Table 3, when cycle-index scope N scope is 10000 times and 100000 times, that is, the random point number for producing is 10000 and 100000, according to the second count value N_crossWith the first count value N_NTSCOperation result, calculate display device Multiple bases NTSC coverage rate be 97.1% and 97.0%, preset times N be 1000 times when, according to the second count value N_cross With the first count value N_NTSCOperation result, calculate multiple bases NTSC coverage rate for 96.4%, it is seen that in cycle-index Scope N value is larger, and it is more accurate that multiple bases NTSC coverage rate is calculated.The multiple bases NTSC of display device is covered Rate relatively 100%.And according to reference gamut area (S in Fig. 3_NTSC=0.1582) and display device gamut area it is many Side shape area (S_polyIt is 0.2021), to obtain colour gamut percentage (display device gamut area accounts for the ratio with reference to gamut area) 128%, illustrate that the colour gamut of the display, except almost occupying with reference to colour gamut, also has part face outside with reference to gamut regions Color, the color that being indicated above the display device can show is enriched very much.

The measuring method of above-mentioned multiple bases NTSC coverage rate, obtains the reference primary coordinate with reference to colour gamut and display The control primary coordinate of device color gamut, several random points are successively produced in gamut map and the generation position of the random point is detected Put, if the position that produces for detecting random point is in the closed area constituted with reference to the reference primary coordinate of colour gamut, increase The first count value that random point occurs in reference colour gamut, if detecting the random point while being also at the control of display device colour gamut In the closed area that primary coordinate is constituted, then increase the second count value that random point occurs in display device colour gamut, work as random point Number reach it is a certain amount of after, according to the first count value for obtaining and the second count value measurement multiple bases NTSC coverage rate, Wherein, the multiple bases NTSC coverage rate is equal to second count value divided by the first count value.The multiple bases of the present invention The measuring method of NTSC coverage rate in gamut map by producing several random points, if the generation position of random point is simultaneously It is more in the number of times with reference to colour gamut and display device colour gamut, then illustrate that the NTSC coverage rate of display device is bigger, energy Enough measurements include the NTSC coverage rate of the multiple bases display device of three primary colours, four primary or five primary colours above display devices, The color gamut of multiple bases display device is accurately embodied, possesses versatility, dependable with function.

In one embodiment, Fig. 4 is referred to, a kind of measurement apparatus of multiple bases NTSC coverage rate, including：

With reference to primary coordinate acquisition module 10, for obtaining the reference primary coordinate with reference to colour gamut；

Control primary coordinate acquisition module 20, for obtaining the control primary coordinate of display device colour gamut；

Random point is produced and detection module 30, in the gamut map being located with reference to colour gamut and display device colour gamut It is upper to produce some random points and detect the generation position of the random point；

First count value increases module 40, if producing position in the reference primary coordinate with reference to colour gamut for random point In the closed area of composition, then increase random point in the first count value occurred with reference to colour gamut；

Second count value increases module 50, if producing position simultaneously in the control of display device colour gamut for random point In the closed area that primary coordinate is constituted, then increase the second count value that random point occurs in display device colour gamut；

Multiple bases NTSC coverage measure module 60, for being surveyed according to first count value and the second count value Amount multiple bases NTSC coverage rate, wherein, the multiple bases NTSC coverage rate is equal to second count value divided by the One count value.

In one embodiment, the first count value increases module to be included：

With reference to colour gamut area measurement module, for measuring the area S of the triangle that the reference primary coordinate is constituted_NTSC；

With reference to the area and measurement module of colour triangle, three constituted with reference to the reference primary coordinate of colour gamut for traversal The reference primary coordinate on angular any two summit, measures the ginseng that the random point is constituted with arbitrarily described two adjacent vertexs Examine the area and S of colour triangle_NTSCsum；

First identification module, if for S_NTSCAnd S_NTSCsumIt is equal, then increase by first count value.

In one embodiment, the second count value increases module to be included：

Display device gamut area measurement module, for measuring the polygonal area that the control primary coordinate is constituted S_poly；

The area and measurement module of control colour triangle, the control primary coordinate for traveling through display device colour gamut is constituted Polygonal any two summit control primary coordinate, measure the random point and arbitrarily described two adjacent vertexs constituted Control colour triangle area and S_polysum；

Second identification module, if for S_polyAnd S_polysumIt is equal, and S_NTSCAnd S_NTSCsumIt is equal, then increase described second Count value.

In one embodiment, the display device colour gamut is three primary colours display device colour gamut above display device colour gamut；

The polygon constituted according to the control primary coordinate of display device colour gamut is closed polygon more than triangle.

In one embodiment, the display device colour gamut is three primary colours display device colour gamut above display device colour gamut；

The polygon constituted according to the control primary coordinate of display device colour gamut is closed polygon more than triangle.

In one embodiment, display device gamut area measurement module includes：

Apex coordinate acquisition module, polygonal each top that the control primary coordinate for obtaining display device colour gamut is constituted Point coordinates, according to polygon vertex order C is designated as respectively₁(x₁, y₁), C₂(x₂, y₂)…C_n(x_n, y_n), C_n+1(x_n+1, y_n+1)；Its In, C₁For polygonal first summit, x₁And y₁For the abscissa and ordinate on first summit respectively；C₂For described Polygonal first summit, x₂And y₂For the abscissa and ordinate on second summit respectively；C_n+1For described polygonal One summit, x_n+1And y_n+1For the abscissa and ordinate on first summit respectively；

The measurement module of display device gamut area second, for according to polygonal each summit abscissa and vertical seat Mark, measures in such a way the area of a polygon that the control primary coordinate of display device colour gamut is constituted：

Wherein, S_polyFor the area of a polygon that the control primary coordinate of display device colour gamut is constituted, x_iAnd y_iTo be respectively The abscissa and ordinate on i summit, x_i+1And y_i+1The respectively abscissa and ordinate on i+1 summit.

In one embodiment, compareing the area and measurement module of colour triangle includes：

Random point coordinate obtaining module, for obtaining the corresponding abscissa x of random point_RanWith ordinate y_Ran；

Control colour gamut triangle area measurement module, for measuring the face of each control colour triangle in such a way Product：

Wherein, S_tri,iFor the colour triangle area that random point and i-th are constituted with i+1 summit, x_iAnd y_iTo divide Not Wei i-th summit abscissa and ordinate, x_i+1And y_i+1The respectively abscissa and ordinate on i+1 summit, x_RanWith x_RanThe respectively corresponding abscissa of random point and ordinate；

Control colour triangle accumulator module, for the area of each control colour triangle that adds up in such a way：

Wherein, S_polysumFor the face for compareing colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs Product and S_tri,iFor random point and the area for compareing colour triangle for constituting with i+1 summit for i-th.

In one embodiment, include with reference to the area and measurement module of colour triangle：

Random point coordinate obtaining module, for obtaining the corresponding abscissa x of random point_RanWith ordinate y_Ran；

Second coordinate obtaining module, three for obtaining reference colour gamut refer to primary colours abscissa x_R、x_GAnd x_B, Yi Jisan Individual reference primary colours ordinate y_R、y_GAnd y_B；

With reference to the area and the second measurement module of colour triangle, for measuring the random point in such a way and appointing The area and S of the reference colour triangle that described two adjacent vertexs of anticipating are constituted_NTSCsum：

Wherein, S_NTSCsumThe face of the reference colour triangle constituted with arbitrarily described two adjacent vertexs for the random point Product and x_RanAnd x_RanThe respectively corresponding abscissa of random point and ordinate, x_R、x_GAnd x_BIt is to refer to base with reference to three of colour gamut Color abscissa, y_R、y_GAnd y_BFor TSC-system, three with reference to colour gamut refer to primary colours ordinate.

In one embodiment, random point number scope is 1000～1000000.

The measurement apparatus of the multiple bases NTSC coverage rate of the present invention and the measurement side of multiple bases NTSC coverage rate Method is corresponded, in the technical characteristic and its beneficial that the embodiment of the measuring method of above-mentioned multiple bases NTSC coverage rate is illustrated Effect suitable for the embodiment of the measurement apparatus of the multiple bases NTSC coverage rate, hereby give notice that.

Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply each technical characteristic in example be possible to combination be all described, as long as but there is no lance in the combination of these technical characteristics Shield, all should be the scope of this specification record.

Embodiment described above only expresses several embodiments of the present invention, and its description is more concrete and detailed, but not Therefore the restriction to the scope of the claims of the present invention can be interpreted as.It should be pointed out that for one of ordinary skill in the art comes Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.

Claims (10)

1. a kind of measuring method of multiple bases NTSC coverage rate, it is characterised in that comprise the following steps：

Obtain the reference primary coordinate with reference to colour gamut；

Obtain the control primary coordinate of display device colour gamut；

Some random points are produced in the gamut map being located with reference to colour gamut and display device colour gamut and detects described random The generation position of point；

If the random point produce position in reference to colour gamut reference primary coordinate constitute closed area in, increase with Machine point is in the first count value occurred with reference to colour gamut；

If the position that produces of the random point is in the closed area that the control primary coordinate of display device colour gamut is constituted simultaneously, Then increase the second count value that random point occurs in display device colour gamut；

According to first count value and the second count value measurement multiple bases NTSC coverage rate, wherein, the multiple bases NTSC coverage rate is equal to second count value divided by the first count value.

2. the measuring method of multiple bases NTSC coverage rate according to claim 1, it is characterised in that increase described the Before one count value, comprise the following steps：

Measure the area S of the triangle that the reference primary coordinate is constituted_NTSC；

The reference primary coordinate on any two summit of the triangle that traversal is constituted with reference to the reference primary coordinate of colour gamut, measures institute State the area and S of the reference colour triangle that random point is constituted with arbitrarily described two adjacent vertexs_NTSCsum；

If S_NTSCAnd S_NTSCsumIt is equal, then increase by first count value.

3. the measuring method of multiple bases NTSC coverage rate according to claim 2, it is characterised in that increase described the Before two count values, comprise the following steps：

The polygonal area S that the measurement control primary coordinate is constituted_poly；

The control primary coordinate on the polygonal any two summit that the control primary coordinate of traversal display device colour gamut is constituted, surveys Measure the area and S that compare colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs_polysum；

If S_polyAnd S_polysumIt is equal, and S_NTSCAnd S_NTSCsumIt is equal, then increase by second count value.

4. the measuring method of multiple bases NTSC coverage rate according to claim 3, it is characterised in that

The display device colour gamut is three primary colours display device colour gamut above display device colour gamut；

The polygon constituted according to the control primary coordinate of display device colour gamut is closed polygon more than triangle.

5. the measuring method of multiple bases NTSC coverage rate according to claim 3, it is characterised in that obtain display and set The control primary coordinate of standby colour gamut, and measure the area of a polygon S that the control primary coordinate is constituted_polyWhen, including following step Suddenly：

Polygonal each apex coordinate that the control primary coordinate of display device colour gamut is constituted is obtained, according to polygon vertex order C is designated as respectively₁(x₁, y₁), C₂(x₂, y₂)…C_n(x_n, y_n), C_n+1(x_n+1, y_n+1)；Wherein, C₁For described polygonal first Summit, x₁And y₁For the abscissa and ordinate on first summit respectively；C₂For polygonal first summit, x₂And y₂For The abscissa and ordinate on second summit of difference；C_n+1For polygonal first summit, x_n+1And y_n+1For respectively first The abscissa and ordinate on individual summit；

According to polygonal each summit abscissa and ordinate, the control base of display device colour gamut is measured in such a way The area of a polygon that chromaticity coordinates is constituted：

$S_{poly}=\frac{1}{2}\left|\underset{i=1}{\overset{n}{\Σ}}(x_i{y}_{i+1}-x_{i+1}{y}_i)\right|$

Wherein, S_polyFor the area of a polygon that the control primary coordinate of display device colour gamut is constituted, x_iAnd y_iTo be respectively i-th The abscissa and ordinate on summit, x_i+1And y_i+1The respectively abscissa and ordinate on i+1 summit.

6. the measuring method of multiple bases NTSC coverage rate according to claim 5, it is characterised in that traversal display sets The control primary coordinate on the polygonal any two summit that the control primary coordinate of standby colour gamut is constituted, measure the random point with The area and S of the control colour triangle that arbitrarily described two adjacent vertexs are constituted_polysum, comprise the following steps：

Obtain the corresponding abscissa x of random point_RanWith ordinate y_Ran；

The area of each control colour triangle is measured in such a way：

$S_{tri,i}=\frac{1}{2}|(x_{Ran}{y}_i-x_i{y}_{Ran})+(x_i{y}_{i+1}-x_{i+1}{y}_i)+(x_{i+1}{y}_{Ran}-x_{Ran}{y}_{i+1})|$

Wherein, S_tri,iFor the colour triangle area that random point and i-th are constituted with i+1 summit, x_iAnd y_iTo be respectively The abscissa and ordinate on i summit, x_i+1And y_i+1The respectively abscissa and ordinate on i+1 summit, x_RanAnd x_RanPoint Wei not the corresponding abscissa of random point and ordinate；

The area of each control colour triangle that adds up in such a way：

$S_{spolysum}=\underset{i=1}{\overset{n}{\Σ}}{S}_{tri,i}$

Wherein, S_polysumThe area for compareing colour triangle that constitutes with arbitrarily described two adjacent vertexs for the random point and, S_tri,iFor random point and the area for compareing colour triangle for constituting with i+1 summit for i-th.

7. the measuring method of multiple bases NTSC coverage rate according to claim 2, it is characterised in that traversal reference colored The reference primary coordinate on any two summit of the triangle that the reference primary coordinate in domain is constituted, measure the random point with it is any The area and S of the reference colour triangle that described two adjacent vertexs are constituted_NTSCsum, comprise the following steps：

Obtain the corresponding abscissa x of random point_RanWith ordinate y_Ran；

Obtain reference colour gamut three refer to primary colours abscissa x_R、x_GAnd x_B, and three refer to primary colours ordinate y_R、y_GAnd y_B；

The face of the reference colour triangle that the random point is constituted with arbitrarily described two adjacent vertexs is measured in such a way Product and S_NTSCsum：

$\begin{array}{c}{S}_{NTSCsum}=\frac{1}{2}\left(\right|\left(x_{Ran}{y}_R-x_R{y}_{Ran}\right)+\left(x_R{y}_G-x_G{y}_R\right)+\left(x_G{y}_{Ran}-x_{Ran}{y}_G\right)|+|(x_{Ran}{y}_G-x_G{y}_{Ran})\\ +\left(x_G{y}_B-x_B{y}_G\right)+\left(x_B{y}_{Ran}-x_{Ran}{y}_B\right)|+|\left(x_{Ran}{y}_B-x_B{y}_{Ran}\right)+(x_B{y}_R-x_R{y}_B)+(x_R{y}_{Ran}-x_{Ran}{y}_R)\left|\right)\end{array}$

Wherein, S_NTSCsumThe area of the reference colour triangle constituted with arbitrarily described two adjacent vertexs for the random point and, x_RanAnd x_RanThe respectively corresponding abscissa of random point and ordinate, x_R、x_GAnd x_BIt is with reference to the horizontal seat of primary colours with reference to three of colour gamut Mark, y_R、y_GAnd y_BFor TSC-system, three with reference to colour gamut refer to primary colours ordinate.

8. the measuring method of the multiple bases NTSC coverage rate according to any one of claim 1-7, it is characterised in that

Random point number scope is 1000～1000000.

9. a kind of measurement apparatus of multiple bases NTSC coverage rate, it is characterised in that include：

With reference to primary coordinate acquisition module, for obtaining the reference primary coordinate with reference to colour gamut；

Control primary coordinate acquisition module, for obtaining the control primary coordinate of display device colour gamut；

Random point is produced and detection module, for producing in the gamut map being located with reference to colour gamut and display device colour gamut Random point simultaneously detects the generation position of the random point；

First count value increases module, if producing what position was constituted in the reference primary coordinate with reference to colour gamut for random point In closed area, then increase random point in the first count value occurred with reference to colour gamut；

Second count value increases module, if control primary colours of the position simultaneously in display device colour gamut that produce for random point are sat In the closed area that mark is constituted, then increase the second count value that random point occurs in display device colour gamut；

Multiple bases NTSC coverage measure module, if producing number of times for random point reaches preset times, according to described First count value and the second count value measurement multiple bases NTSC coverage rate, wherein, the multiple bases NTSC is covered Rate is equal to second count value divided by the first count value.

10. measurement apparatus of multiple bases NTSC coverage rate according to claim 9, it is characterised in that first counts Value increases module to be included：

With reference to colour gamut area measurement module, for measuring the area S of the triangle that the reference primary coordinate is constituted_NTSC；

With reference to the area and measurement module of colour triangle, for the triangle that traversal is constituted with reference to the reference primary coordinate of colour gamut Any two summit reference primary coordinate, measure the reference color that the random point and arbitrarily described two adjacent vertexs are constituted The area and S of domain triangle_NTSCsum；

First identification module, if for S_NTSCAnd S_NTSCsumIt is equal, then increase by first count value.