Iridescent Image Generation Using Circular Color Shifts

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Solution Overview

Problem

Existing methods for creating iridescent images are not efficient in producing iridescent effects from reference images such as drawings, photographs, or text, and do not easily adapt to various applications like product packaging or 3D displays.

Innovation Solution

A method involving the creation of a series of modified reference images by circularly shifting colors from a color palette, combined with an optical selector like a lenticular array or parallax barrier, to produce an iridescent image that can be perceived differently by each eye, allowing for aesthetic and striking effects in various displays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a matrix of lenticular elements is printed on a substrate to create moiré images, then an iridescent effect is achieved, but the method does not allow for easy creation of an iridescent image from a given reference image

Engineering Contradiction:
Improveease of creation of iridescent image from reference imageVSAvoidadaptability to various applications like product packaging or 3D displays
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The reference image is divided into multiple modified reference images, each processed with different color palettes and circular shifts. This segmentation allows each component to be optimized independently while maintaining the overall iridescent effect when viewed through the optical selector.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention applies parameter changes by systematically varying color palettes and performing circular shifts on different modified reference images. These parameter transformations enable the conversion of a single reference image into multiple images with different color characteristics, facilitating easy adaptation to various applications.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If colors of a palette are circularly shifted to create modified reference images, then efficient creation of iridescent images from reference images is achieved, but the device complexity increases due to the need for optical selectors

Engineering Contradiction:
Improveefficiency of creating iridescent imagesVSAvoidcomplexity of optical selector system
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The invention employs periodic action through circular shifts of color palettes across multiple modified reference images. This periodic transformation creates the iridescent effect when viewed through the optical selector, enabling efficient image creation while using a relatively simple optical structure.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The method creates multiple copies of the reference image, each modified with different color palettes and circular shifts. These copied and transformed images are then combined to form the final iridescent image, improving productivity through systematic replication and transformation rather than manual creation.

Inventive Principle:
Principle #26Copying

3Adaptability or versatility

If multiple modified reference images are created with different color palettes and circular shifts, then versatile application across packaging, cards, and 3D displays is achieved, but the manufacturing process becomes more complex

Engineering Contradiction:
Improveversatility across packaging, cards, and 3D displaysVSAvoidcomplexity of image processing process
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention achieves universality by creating a multi-functional image processing method that can generate iridescent images suitable for various applications including product packaging, business cards, and 3D displays. The same core process of creating modified reference images with color palette variations and circular shifts serves multiple purposes across different media and display technologies.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The method performs preliminary actions by pre-processing the reference image into multiple modified versions with different color palettes and circular shifts before final assembly. This preliminary processing stage simplifies the overall manufacturing process by preparing all necessary components in advance, making the system adaptable to various applications without requiring complex real-time processing.

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method enables the efficient creation of iridescent images from reference images, providing eye-catching effects in multiple applications, including 3D displays, without requiring specific glasses or stereoscopes, and can be adapted for use in various formats like packaging, cards, and decorations.

Implementation Method 1

A method is proposed for producing a series of at least two modified reference images intended to form an iridescent image from at least one reference image

Methodology Applied
Scientific EffectOptical selection: Lens

Implementation Method 2

The iridescence effect occurs when our eyes, positioned far apart, perceive different colors and/or light intensities of the same object

Methodology Applied
Scientific EffectIridescence: Iridescence

Data Source

PatentEP2718901B1Method for producing an iridescent image, image obtained and device including same, associated program
Publication Date: 2020.02.12 LANFRANCHI HOLOGRAMMES
  • EP2718901B1 patent drawingFigure 1A~1B
  • EP2718901B1 patent drawingFigure 2~4
  • EP2718901B1 patent drawingFigure 3

AI summary

The invention relates to a method for producing a series of modified images intended for forming an iridescent image, using at least one reference image, characterised by including steps of: creating a colour pallet (P); creating a series of at least two modified reference images (IRM0, IRM1, IRM2, IRMn, etc.), in which the colours of said at least one reference image (IR) are replaced with the colours of the pallet by applying, before or between each new modified reference image (IRM), a circular shift to the colours of the pallet. The invention also relates to the interlaced, iridescent, 3-D images obtained using such a method, as well as to a device including such an interlaced image and an associated program.