WO2025234966 - A METHOD OF REDUCING DEAD AND BAD PIXEL EFFECTS
National phase entry is expected:
Publication Number
WO/2025/234966
Publication Date
13.11.2025
International Application No.
PCT/TR2025/050439
International Filing Date
03.05.2025
Title **
[English]
A METHOD OF REDUCING DEAD AND BAD PIXEL EFFECTS
[French]
PROCÉDÉ DE RÉDUCTION DES EFFETS DE PIXELS MORTS ET DÉFECTUEUX
Applicants **
PLAN S UYDU VE UZAY TEKNOLOJİLERİ A.Ş.
Inventors
ÖZSARAÇ, Seçkin
Priority Data
2024/005629
09.05.2024
TR
Application details
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International Searching Authority |
Turkpatent
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| 译文 |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1958 | |
| EPO | Filing, Examination, Granting | 9151 | |
| Japan | Filing, Examination, Granting | 1722 | |
| South Korea | Filing, Examination, Granting | 1206 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,777
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Abstract[English]
The invention relates to an image processing method applied after the Non-Uniformity Correction process, aimed at reducing the effects of dead and bad pixels. It utilizes pixel-based Non-Uniformity Correction parameters that are obtained during the calibration stage in calibration based Non-Uniformity Correction applications and stored in the imaging device's internal memory for use in the Non-Uniformity Correction process. Using these specified parameters, the method determines how closely each pixel's response aligns with the ideal response, thereby establishing a pixel-based accuracy coefficient. Subsequently, the pixels are clustered based on their accuracy coefficients; this clustering process identifies dead or bad pixels, and correction is performed with the remaining pixels. For correcting dead or bad pixel values, a point distribution function is employed.[French]
L'invention concerne un procédé de traitement d'image appliqué après le processus de correction de non-uniformité, visant à réduire les effets des pixels morts et défectueux. Il utilise des paramètres de correction de non-uniformité basés sur les pixels, qui sont obtenus pendant l'étape d'étalonnage dans des applications de correction de non-uniformité basées sur l'étalonnage et stockés dans la mémoire interne du dispositif d'imagerie pour une utilisation dans le processus de correction de non-uniformité. À l'aide de ces paramètres spécifiés, le procédé détermine le degré de proximité avec lequel la réponse de chaque pixel s'aligne sur la réponse idéale, ce qui permet d'établir un coefficient de précision basé sur les pixels. Ensuite, les pixels sont regroupés sur la base de leurs coefficients de précision ; ce processus de regroupement identifie des pixels morts ou défectueux, et une correction est effectuée avec les pixels restants. Pour corriger des valeurs de pixels morts ou défectueux, une fonction de distribution de point est utilisée.