RU2022101610A - VISUALIZATION OF WOOD TINTING - Google Patents

Claims (49)

1. A computer-implemented method (100) for generating a rendering of a tinted wood substrate, comprising the steps of: receiving (102) an image (SI) of the wood substrate to be tinted; - divide the range of colors that are present in the image into a plurality of color bands; subdividing (104) the image into a plurality of image fragments, each image fragment corresponding to an image region having a color that falls within a corresponding one of the color bands; - for each image fragment, extract (106) the reflectance curve characteristic of the wooden substrate for the color corresponding to the image fragment; - extract (108) the values of absorption and scattering for tinting; - for each fragment of the image determine (110) the curve of the reflectance characteristic of the tinted wood, based on the values of absorption and scattering for tinting and the curve of the reflectance for the wood substrate for this fragment of the image; And - for each pixel of each image fragment, a color is determined (112) based on the reflectance curve characteristic of tinted wood, and as a result, a formed image representing a wooden substrate after applying the tint is obtained. 2. The method (100) of claim 1, wherein the absorption and scattering values for tinting are determined by the steps of: - extract the absorption and scattering values for each dye in the tint; And - using the concentrations of dyes in tinting, the values of the absorption and dispersion of the tinting mixture are determined. 3. The method (100) according to claim 1 or 2, wherein the image of the wood substrate to be rendered is received from a database (4) or from a user input. 4. Method (100) according to paragraphs. 1, 2 or 3, comprising the steps of extracting absorption and scattering values for a plurality of tonings, for example, from a database (20), and/or extracting a plurality of images of substrates to be rendered. 5. The method (100) according to any one of paragraphs. 1-4, containing the step where you enter through the user interface (28): - data representing one or more different substrates to be rendered; - data representing the absorption and scattering values for one or more shades; and/or - data representing one or more values of the thickness of the tinting layers. 6. The method (100) according to claim 4 or 5, comprising the step of providing one or more generated images of tinted wood substrates for one or more different wood substrates, and/or one or more different tints, and/or one or more layer thickness values. 7. The method (100) of claim 6, comprising the step of providing at least one formed image of a tinted wood substrate including at least a first layer of a first tint and a second layer of another second tint. 8. The method (100) according to claim 6 or 7, comprising the step of selecting the desired tint or tints based on one or more generated images of the tinted wood substrates. 9. Method (100) according to claim 6 or 7, comprising the steps of: providing a plurality of generated images of tinted wood substrates for a plurality of different tints; - comparison of the generated images of tinted wooden substrates with the reference image; And - the choice of tinting, which results in the formed image of the tinted wooden substrate, which most closely matches the reference image. 10. The method (100) according to any one of paragraphs. 1-9, comprising the step of mixing the tones according to the input absorbance and scatter values for the tint, or according to the absorbance and scatter values for the selected tint. 11. The method (100) according to any one of paragraphs. 1-10, comprising the step of providing one or more generated images of tinted wood substrates for one or more different wood substrates for one tint and forming a label for the container for said tint using said generated images. 12. The method (100) according to any one of paragraphs. 1-11, comprising the step of converting the color for each pixel from RGB to a three-stimulus value XYZ or L*a*b* for each sub-image. 13. System (1) for forming the visualization of a tinted wooden substrate, comprising: - a receiver (2) configured to receive an image (SI) of the wood substrate to be tinted; - a separator (8) configured to divide the range of colors that are present in the image into a plurality of color bands; and subdivide the image into a plurality of image sub-images, each sub-image corresponding to an image area having a color falling within a corresponding one of the color bands; - the first extracting unit (14) configured to, for each image fragment, extract the reflectance curve characteristic of the wood substrate for the color corresponding to the image fragment; - a second extraction unit (18) for extracting absorption and scattering values for tinting; - a determination unit (24) configured, for each image fragment, to determine the reflectance curve characteristic of the tinted wood, based on the absorption and scattering values for the tint and the reflectivity curve for the wood substrate for this image fragment; And - a generator (26) configured to, for each pixel of each image fragment, determine a color based on the reflectance curve characteristic of tinted wood, and as a result obtain a formed image representing a wooden substrate after tinting has been applied. 14. System (1) according to claim 13, containing a database (16, 20) containing one or more images of different substrates to be tinted and/or absorption and scattering values for one or more different tints. 15. System (1) according to claim 13 or 14, containing a user interface (28, 30) configured to: - receive input information regarding: the substrate to be tinted and/or the absorption and scattering values related to the tinting and/or the thickness of the tinted layer; and/or - display one or more rendered images of a tinted wooden substrate. 16. System (1) according to paragraphs. 13, 14 or 15, containing a calculation unit configured to: - extract absorption and scattering values for each dye in the tint; And - using the concentrations of dyes in tinting, determine the values of absorption and dispersion of the tinting mixture. 17. A computer program product containing instructions implemented on a computer that, when implemented by a programmable computer, cause the computer to: - receive (102) an image (SI) of the wood substrate to be rendered; - divide the range of colors that are present in the image into many color bands; - to subdivide (104) the image into a plurality of image fragments, with each image fragment corresponding to an image area having a color that falls into the corresponding one of the color bands; - for each image fragment, extract (106) the reflectance curve characteristic of the wooden substrate for the color corresponding to the image fragment; - extract (108) absorption and scattering values for tinting; - for each image fragment to determine (110) the curve of the reflection coefficient characteristic of the tinted wood, based on the absorption and scattering values for the tinting and the reflectivity curve for the wood substrate for this fragment of the image; And - for each pixel of each image fragment, to determine (112) a color based on the reflectance curve characteristic of tinted wood, and as a result, a formed image representing a wooden substrate after tinting has been applied.