Kamera-Sensor-Zu-Sensor-Farbraumabbildung
Anmelder: Beijing Xiaomi Mobile Software Co., Ltd. 🇨🇳
Details
- Veröffentlichungs-Nr.
- EP4325880
- Aktenzeichen
- EP22191207
- Anmeldetag
- 19. August 2022
- Veröffentlichung
- 22. Oktober 2025
- Erteilung
- 22. Oktober 2025
- Rechtsraum
- EP
- IPC
- H04N23/88
Abstract
Method to determine a mapping relation for image processing comprising: Providing a plurality of color patch spectral reflectances R<sub>i</sub>(λ),i = 1 ... C, and a plurality of illuminant power spectrum distributions I<sub>j</sub>(λ),j = 1 ... L, where λ denotes the wavelength of light; Providing capture sensor channel spectral sensitivities S<sub>R,c</sub>(λ), S<sub>G,c</sub>(λ) and S<sub>B,c</sub>(λ); Providing target sensor channel spectral sensitivities S<sub>R,t</sub>(λ), S<sub>G,t</sub>(λ) and S<sub>B,t</sub>(λ); Determining from the color patch spectral reflectances R<sub>i</sub>(λ), the illuminant power spectrum distributions I<sub>j</sub>(λ) and the capture sensor channel spectral sensitivities S<sub>R,c</sub>(λ), S<sub>G,c</sub>(λ) and S<sub>B,c</sub>(λ) capture sensor color channel responses [R<sub>c</sub>,G<sub>c</sub>,B<sub>c</sub>]<sub>k</sub>, k = 1 ... K; and determining the mapping relation from the color patch spectral reflectances R<sub>i</sub>(λ), the illuminant power spectrum distributions I<sub>j</sub>(λ) and the target sensor channel spectral sensitivities S<sub>R,t</sub>(λ), S<sub>G,t</sub>(λ) and S<sub>B,t</sub>(λ) target sensor color channel responses [R<sub>t</sub>,G<sub>t</sub>,B<sub>t</sub>]<sub>k</sub>, k = 1 ... K; wherein the mapping relation comprises a plurality of mapping functions; and wherein each mapping function is determined by a mapping from the capture sensor color channel responses [R<sub>c</sub>,G<sub>c</sub>,B<sub>c</sub>]<sub>k</sub> to the target sensor color channel responses [R<sub>t</sub>,G<sub>t</sub>,B<sub>t</sub>]<sub>k</sub>, k = 1 ... K.
Anmelder
- Firma
- Beijing Xiaomi Mobile Software Co., Ltd.
- Land
- 🇨🇳 China
Chinesisches Unternehmen, das Smartphones, Smart-Home-Geräte und weitere Unterhaltungselektronik sowie zugehörige Software entwickelt, herstellt und vertreibt.
4.998 Patente in unserer Datenbank