Color Matching for Building Materials with Irregular Patterns and Textures

As the range of measurement for 2D colorimeters is wide, color matching is possible for various textures (wood grain, marble stone, geometrical patterns, etc.).
By specifying the range of measurement, it is possible to reduce the margin of error by the inspector and save inspection and image data. Therefore, they can also be used for quality assurance after shipping.

I. Wood
Although wood is used for floors and columns, it is not possible to completely match colors and wood grains because they are natural products. Until now, wood was selected by experienced artisans, but by measuring colors of wood grain, 2D colorimeters can be utilized for color matching of wood building materials.

STEP 1: Photograph the Wood

Photograph the wood that will serve as the standard.

STEP 2: Photograph the Wood to Be Inspected

Photograph the wood to be inspected.
As it is possible to display the standard image imported in STEP 1 (overlay feature), alignment can be performed easily.

STEP 3: Specify the Range You Would Like to Inspect Within the Photographed Image

pecify the range of inspection within the image photographed in STEP 2, in a range that is appropriate for inspection.
As the range of measurement is narrow for traditional spectrophotometers, depending on the location of measurement, there were significant color shifts. Since PaPaLaB’s 2D colorimeters can view chromaticity distribution over a wide range, complex patterns and textures can also be measured.

STEP 4: Check for Color Distribution Shifts

Measure the range set in STEP 3.
The color distributions for the standard object and the inspection object are displayed. Differences in colors with wood grain are displayed through “color distribution coincidence,” our company’s unique parameter.

II. Tiles
When tiles are used on buildings that were constructed a long time ago, the tiles used for repairs do not usually match in color, making them stand out from the surrounding tiles.
Because PaPaLaB’s 2D colorimeters can measure colors with texture (roughness, patterns, etc.), it is possible to select tiles with optimal colors for repairs.

STEP 1: Photograph the Tile

Photograph the tiles surrounding the tile to be repaired.

STEP 2: Photograph the Tile to Be Used for Repair

Photograph the tile to be used for repair.

STEP 3: Check for Color Distribution Shifts

Measure the specified range.
The color distributions for the standard object and the inspection object are displayed. Additionally, a chromaticity diagram that overlays each color distribution’s chromaticity diagram is displayed, showing the degree of overlap of colors and textures with patterns as a percentage.