Systems and methods of rendering DCI-compliant image data on Enhanced Dynamic Range (EDR) display systems are disclosed. One embodiment of an EDR projector system comprises a first modulator and a second modulator. One method for rendering DCI-compliant image data on an EDR projector system comprises: receiving input image data, said image data comprising a plurality of image formats; determining whether the input image data comprises DCI image data; if the input image data comprises DCI image data, then performing dynamic range (DR) processing on the DCI image data; and rendering the dynamic range processed DCI image data on the EDR projector system. One DR processing method is to set the first modulator to a desired luminance level—e.g., fully ON or a ratio of DCI max luminance to the EDR max luminance. In addition, a desired minimum level of luminance may be set for the EDR projector.

A method and apparatus for color space conversion are provided. An apparatus for converting a color space includes at least one processor configured to convert an original full image of an original color space to a temporary image of a target color space, estimate a color space mapping parameter between the original color space and the target color space, the color space mapping parameter corresponding to the original full image, obtain a residual vector of the target color space based on the temporary image and the color space mapping parameter, convert the residual vector to a residual image of the target color space, and obtain a target full image of the target color space by combining the residual image with the temporary image.

A method and apparatus for color space conversion are provided. An apparatus for converting a color space includes at least one processor configured to convert an original full image of an original color space to a temporary image of a target color space, estimate a color space mapping parameter between the original color space and the target color space, the color space mapping parameter corresponding to the original full image, obtain a residual vector of the target color space based on the temporary image and the color space mapping parameter, convert the residual vector to a residual image of the target color space, and obtain a target full image of the target color space by combining the residual image with the temporary image.

Described are improved approaches to implement color sequential displays that can mitigate problems with conventional display technologies. Color-breakup is mitigated by modifying the original color channels and adding one or more additional color channels derived from the original ones.

Described are improved approaches to implement color sequential displays that can mitigate problems with conventional display technologies. Color-breakup is mitigated by modifying the original color channels and adding one or more additional color channels derived from the original ones.

The present disclosure relates to a method and device for processing a picture comprising estimating a color mapping between a first color-graded version of picture whose values are represented in a first color volume and a second color-graded version of said picture whose values are represented in a second color volume. The method comprises: —obtaining (10) a first set of color values (S1) from the first color-graded version of the picture by taking into account at least one determined pixel in said first color-graded version of the picture, and obtaining a second set of color values (S2) from the second color-graded version of the picture by taking into account at least one determined pixel in said second color-graded version of the picture, each of said at least one determined pixel in the first color-graded version of the picture is co-located to one of said at least one determined pixel in the second color-graded version of the picture; and —estimating (20) said color mapping between said first and second color-graded versions of the picture by estimating a color mapping function that maps the color values of said first set of color values onto the color values of said second set of color values.

The present disclosure relates to a method and device for processing a picture comprising estimating a color mapping between a first color-graded version of picture whose values are represented in a first color volume and a second color-graded version of said picture whose values are represented in a second color volume. The method comprises: —obtaining (10) a first set of color values (S1) from the first color-graded version of the picture by taking into account at least one determined pixel in said first color-graded version of the picture, and obtaining a second set of color values (S2) from the second color-graded version of the picture by taking into account at least one determined pixel in said second color-graded version of the picture, each of said at least one determined pixel in the first color-graded version of the picture is co-located to one of said at least one determined pixel in the second color-graded version of the picture; and —estimating (20) said color mapping between said first and second color-graded versions of the picture by estimating a color mapping function that maps the color values of said first set of color values onto the color values of said second set of color values.

The present disclosure relates to a method and device for processing a sequence of pictures comprising estimating a color mapping between a first color-graded version of said sequence of pictures whose values are represented in a first color volume and a second color-graded version of said sequence of pictures whose values are represented in a second color volume. The method is characterized in that it comprises:—obtaining (10) a first composite picture by assembling at least two pictures of the first color-graded version of the sequence of pictures in order that the content of said first composite picture comprises at least a part of the content of each of said at least two pictures, and the second composite picture is obtained by assembling at least two pictures of the second color-graded version of the sequence of pictures in order that the content of said second composite picture comprises at least a part of the content of each of said at least two pictures; and—estimating (20) said color mapping between said first and second color-graded versions of the picture by estimating a color mapping function that maps the color values of said first composite picture onto the color values of said second composite picture.

A calibration method and related systems for colorimetric chemical assay and a fluid sensor apparatus using the same are provided. Reference measurements are taken from both a digital camera and a spectrometer. The digital camera is installed in the fluid sensor apparatus. Subsequently, color measurements from the digital camera are then converted and compared to prior spectrometric measurements to perform a colorimetric analysis.

A calibration method and related systems for colorimetric chemical assay and a fluid sensor apparatus using the same are provided. Reference measurements are taken from both a digital camera and a spectrometer. The digital camera is installed in the fluid sensor apparatus. Subsequently, color measurements from the digital camera are then converted and compared to prior spectrometric measurements to perform a colorimetric analysis.