Hologram Image Normalization for Parallel Printing
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Solution Overview
Problem
Existing holographic printing methods require sequential generation and recording of hologram images, leading to increased total printing time and memory usage due to the need to calculate global maximum and minimum values for normalization after all encoded holograms are obtained.
Innovation Solution
A method that calculates approximate global maximum and minimum values for normalization during hologram generation, allowing for parallel processing of hologram generation and printing, thereby reducing total printing time and optimizing memory usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sequential generation and recording of hologram images is performed, then manufacturing precision is maintained, but productivity decreases
Solution Approach 1:
The patent calculates approximate global maximum and minimum values for normalization before all encoded holograms are fully generated. By performing preliminary normalization actions with approximate values, the system enables parallel processing of hologram generation and printing operations, thereby improving productivity while maintaining acceptable manufacturing precision through subsequent refinement if needed
2Manufacturing precision
If all encoded holograms are generated before normalization, then manufacturing precision is improved, but loss of time increases
Solution Approach 1:
The patent applies partial normalization using approximate global maximum and minimum values calculated from a subset of encoded holograms rather than waiting for complete generation of all holograms. This partial action approach reduces total printing time by enabling parallel processing, while the normalization accuracy is sufficient for practical applications, effectively balancing the trade-off between precision and time loss
3Manufacturing precision
If exact global maximum and minimum values are calculated after all encoded holograms are obtained, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent performs preliminary calculation of approximate global maximum and minimum values during the encoding phase rather than waiting until all holograms are completely generated. This preliminary action reduces processing complexity by distributing calculations over time and enabling parallel operations, while maintaining sufficient normalization accuracy for practical holographic printing applications
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 approach minimizes total printing time by enabling parallel processing of hologram generation and printing, and optimizes memory usage by reducing the need to store all encoded holograms, using approximate normalization values instead.
Implementation Method 1
a complex hologram image corresponding to each hogel is used as an object beam, and hogels are recorded through interference of the object beam with a reference beam
Implementation Method 2
hogels are recorded through interference of the object beam with a reference beam separately given
Data Source
AI summary
Provided is a hologram image normalization method for a holographic printer. In a holographic printing method according to an embodiment, generating, encoding, and normalizing for the (n+1)-th hogel are performed in parallel with loading and recording of a normalized hologram for the n-th hogel, and moving and waiting for the (n+1)-th hogel. Accordingly, a global maximum value and a global minimum value for normalization may be calculated as approximate estimation values, and a hologram generation process and a printing process may be performed in parallel, so that a total printing time may be minimized and memory usage may be optimized when holographic printing is performed.