Film Data Modification for Display Environment Adaptation
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Solution Overview
Problem
The challenge is to ensure that the intended image rendition by directors is maintained across varying viewing conditions and technologies, as current methods fail to guarantee consistency in image appearance when transitioning from traditional film to electronic distribution and display, often introducing errors due to differences in stray light and display environments.
Innovation Solution
A system that modifies film data to maintain consistent luminance and chromaticity across different display environments by characterizing and adapting to the specific conditions of each environment, using data transformation and display conditions adaptation blocks to ensure a similar subjective effect, including coding in a perceptually uniform way and converting data into the 'linear light' domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If film data is distributed using traditional film prints or simple electronic scanning, then distribution simplicity is maintained, but image appearance consistency deteriorates due to differences in stray light and display environments
Solution Approach 1:
The system performs preliminary characterization of the review display environment and pre-compensates the master film data for differences between review and final display conditions. By calculating and applying correction factors before distribution, the system ensures that when the film is exhibited in different environments (with different stray light levels), the director's intended image appearance is preserved without requiring re-review or manual adjustment at each venue.
2Manufacturing precision
If the master film data is modified to account for different display environments, then image appearance consistency improves, but system complexity increases due to additional processing steps
Solution Approach 1:
The system changes parameters by characterizing the review display environment (measuring luminance, chromaticity, and stray light levels) and using these measured parameters to calculate correction factors. The master film data is then modified by applying luminance scaling and chromaticity adjustments based on these parameters, allowing automatic adaptation to different display environments without complex manual intervention.
3Reliability
If extensive review of alternative versions is conducted to ensure director's intention is met, then image quality assurance improves, but time consumption increases
Solution Approach 1:
The system implements feedback by characterizing the actual review display environment during the grading process and using this information to predict how the film will appear in final exhibition conditions. This feedback loop allows the director to approve the master film data with confidence that the director's intended rendition will be achieved, eliminating the need for extensive review of multiple alternative versions distributed to different venues.
Data Source
AI summary
This invention concerns a system for the distribution of films by electronic means, and in particular, for ensuring a director's intended rendition of the images is attained in differing viewing conditions and technologies. Thus master data enabling the luminance and chromaticity of every part of every frame as previously displayed in a first display environment to be determined may be modified to achieve a similar subjective effect in a second display environment, the modification depending for example on data characterizing the said second display environment.