CN100392663C - Remote hue information transmission method - Google Patents

Abstract

The present invention relates to a transmission method for remote color data. At present, color information is transmitted by objects or standard color card systems. In the method, a transmitting party and a receiving party use the same kinds of standard color cards, and the color values are respectively stored in a computer. Firstly, the transmitting party tunes the RGB value of a color to be transmitted. Secondly, a close color card is found out from the standard color cards, and the number of the close color card is given out. Thirdly, the color of the corresponding color card is tuned to obtain the RGB value of the color card of the transmitting party. The transmitting party sends the information to the receiving party through a network. The receiving party tunes the corresponding color according to the color card number, obtains the RGB value of the color card of the receiving party, and obtains the parameters of an equations set through calculating the RGB value of the color card of the transmitting party and the RGB value of the color card of the receiving party. According to the parameter equations set, the RGB value of the color on a display of the corresponding receiving party is calculated by utilizing the RGB value of the color transmitted by the transmitting party. Through the process, the display of the receiving party has the same color expression with that of the transmitting party.

Description

Remote hue information transmission method

Technical field

The present invention relates to the transmission method of a kind of transmission method of data, particularly long-range color data, be applicable to any product design system relevant, long-range color interactive design system with the color transmission.

Background technology

The transmission of color information is a great problem in the product design manufacture process, the most frequently used method is to utilize design material object or standard color card system to transmit, for designer and production base, designer and client's the approaching situation in geographic position, these two kinds of transmission methods are feasible effectively.Along with the development of infotech and internet, the use of computer-aided design (CAD) and electronic document is more and more universal, also makes long-range efficient data transmission become possibility.But because the digital color data are a kind of device-dependent data, identical data presenting on different equipment (display) can vary, and keep the consistance in the color data transmission, still need be by means of material object or standard color card system.Use the design material object to transmit color information, need between designer and client, designer and the manufacturer constantly to confirm color information, make the design cycle elongated, lost the superiority of remote design by posting material object; And the standard color card system quantity is less relatively, can not transmit arbitrary hue information.

Summary of the invention

Purpose of the present invention is exactly the deficiency that overcomes in the existing color data remote transmission, utilize existing display device and standard color card system that a kind of method that the digital remote color information is transmitted of accurately carrying out is provided, solve the cycle length in the long-range color transmission and can transmit the few problem of color data information.

Concrete scheme of the present invention may further comprise the steps:

1, transmit leg and take over party use with a kind of standard color card, and have preserved the color-values of this standard color card system in both sides' computing machine.

2, transmit leg at first accesses the color rgb value that needs transmission on the computer monitor of oneself; Adopt the method for calculating aberration, seek n approaching colour atla of color in the standard color card system, and provide the look card number, n 〉=4; The color that accesses corresponding colour atla on the computer monitor of oneself one by one obtains transmit leg colour atla rgb value; Transmit leg is with look card number, transmit leg colour atla rgb value and need the color rgb value of transmission to send the color data take over party to by network.The method of described calculating aberration compares one by one for the color rgb value and the colour atla color-values that will need to transmit, according to $\mathrm{\ΔE}=\sqrt{{(L_1-L_2)}^2+{(a_1-a_2)}^2+{(b_1-b_2)}^2}$ (Δ E represents the aberration of two colors, L ₁, a ₁And b ₁Three components of the color-values of the color that expression need transmit, L ₂, a ₂And b ₂Three components of color-values of the color of expression colour atla), Δ E hour is immediate colour atla.

3, the look card number sent according to transmit leg of take over party accesses pairing color on the computer monitor of oneself, and obtains take over party's colour atla rgb value; The take over party sets up the parametric equation group that can represent both sides' display color gamut mapping relations, utilizes transmit leg colour atla rgb value and take over party's colour atla rgb value by homing method, calculates the parameter that obtains this system of equations; According to this parametric equation group, the color rgb value that utilizes transmit leg to transmit calculates corresponding color rgb value at take over party's display.

Though, identical color representation is arranged on display separately though the color rgb value of the reciever display that obtains by this process and color rgb value that transmit leg need transmit are different from numerical value.

Embodiment

Transmit leg and take over party use with a kind of standard color card, and have preserved the color-values of this standard color card system in both sides' computing machine.When needing to transmit color information, at first transmit leg accesses the color rgb value that needs transmission on the transmit leg computer monitor; Adopt the method for calculating aberration, seek 8 approaching colour atlas of color in the standard color card system, and provide the look card number.The color that accesses corresponding colour atla on the computer monitor of oneself one by one obtains transmit leg colour atla rgb value.Transmit leg is with look card number, transmit leg colour atla rgb value and need the color rgb value of transmission to send the color data take over party to by network.

The look card number that the take over party sends according to transmit leg accesses pairing color on the computer monitor of oneself, and obtains take over party's colour atla rgb value; The take over party sets up the parametric equation group of both sides' display color gamut mapping relations:

$\left[\begin{array}{c}{R}_r\\ G_r\\ B_r\end{array}\right]=\left[\begin{array}{c}{a}_{r0},a_{r1},a_{r2},a_{r3},a_{r4},a_{r5},a_{r6}\\ a_{g0},a_{g1},a_{g2},a_{g3},a_{g4},a_{g5},a_{g6}\\ a_{b0},a_{b1},a_{b2},a_{b3},a_{b4},a_{b5},a_{b6}\end{array}\right]\left[\begin{array}{c}1\\ R_s\\ G_s\\ B_s\\ R_s*G_s\\ R_s*B_s\\ B_s*G_s\end{array}\right]---\left(1\right)$

R wherein _r, G _r, B _rExpression take over party's color rgb value (the color rgb value that comprises take over party's colour atla rgb value and take over party's display), R _s, G _s, B _sThe color rgb value (comprising the color rgb value that transmit leg colour atla rgb value and transmit leg need transmit) of expression transmit leg; Utilize transmit leg colour atla rgb value and take over party's colour atla rgb value by homing method, calculate and obtain matrix:

$\left[\begin{array}{c}{a}_{r0},a_{r1},a_{r2},a_{r3,}{a}_{r4},a_{r5},a_{r6}\\ a_{g0},a_{g1},a_{g2},a_{g3},a_{g4},a_{g5},a_{g6}\\ a_{b0},a_{b1},a_{b2},a_{b3},a_{b4},a_{b5},a_{b6}\end{array}\right]---\left(2\right)$

With matrix (2) substitution parametric equation group (1), the color rgb value that utilizes transmit leg to transmit calculates corresponding color rgb value at take over party's display.

Claims (1)

1. remote hue information transmission method is characterized in that this method may further comprise the steps:

(1) transmit leg and take over party determine to use with a kind of standard color card, and both sides have preserved the color-values of this standard color card system in computing machine separately;

(2) transmit leg at first accesses the color rgb value that needs transmission on the computer monitor of oneself; Adopt the method for calculating aberration, seek n approaching colour atla of color in the standard color card system, and provide the look card number, wherein n 〉=4; The color that accesses corresponding colour atla on the computer monitor of oneself one by one obtains transmit leg colour atla rgb value; Transmit leg is with look card number, transmit leg colour atla rgb value and need the color rgb value of transmission to send the color data take over party to by network; The method of described calculating aberration compares one by one for the color rgb value and the colour atla color-values that will need to transmit, according to $\mathrm{\ΔE}=\sqrt{{(L_1-L_2)}^2+{(a_1-a_2)}^2+{(b_1-b_2)}^2},$ Δ E hour is immediate colour atla, and wherein Δ E represents the aberration of two colors, L ₁, a ₁And b ₁Three components of the color-values of the color that expression need transmit, L ₂, a ₂And b ₂Three components of the color-values of the color of expression colour atla;

(3) the look card number sent according to transmit leg of take over party accesses pairing color on the computer monitor of oneself, and obtains take over party's colour atla rgb value; The take over party sets up the parametric equation group that can represent both sides' display color gamut mapping relations:

$\left[\begin{array}{c}{R}_r\\ G_r\\ B_r\end{array}\right]=\left[\begin{array}{c}{a}_{r0},a_{r1},a_{r2},a_{r3},a_{r4},a_{r5},a_{r6}\\ a_{g0},a_{g1},a_{g2},a_{g3},a_{g4},a_{g5},a_{g6}\\ a_{b0},a_{b1},a_{b2},a_{b3},a_{b4},a_{b5},a_{b6}\end{array}\right]\left[\begin{array}{c}1\\ R_s\\ G_s\\ B_s\\ R_s*G_s\\ R_s*B_s\\ B_s*G_s\end{array}\right]---\left(a\right)$

R wherein _r, G _r, B _rExpression take over party's color rgb value, R _s, G _s, B _sThe color rgb value of expression transmit leg; Utilize transmit leg colour atla rgb value and take over party's colour atla rgb value by homing method, obtain matrix:

$\left[\begin{array}{c}{a}_{r0},a_{r1},a_{r2},a_{r3},a_{r4},a_{r5},a_{r6}\\ a_{g0},a_{g1},a_{g2},a_{g3},a_{g4},a_{g5},a_{g6}\\ a_{b0},a_{b1},a_{b2},a_{b3},a_{b4},a_{b5},a_{b6}\end{array}\right]---\left(b\right);$

By matrix (b) and system of equations (a), the color rgb value that utilizes transmit leg to transmit obtains corresponding color rgb value at take over party's display.