Abstract
A handheld imaging device has a data receiver that is configured to receive reference encoded image data. The data includes reference code values, which are encoded by an external coding system. The reference code values represent reference gray levels, which are being selected using a reference grayscale display function that is based on perceptual non-linearity of human vision adapted at different light levels to spatial frequencies. The imaging device also has a data converter that is configured to access a code mapping between the reference code values and device-specific code values of the imaging device. The device-specific code values are configured to produce gray levels that are specific to the imaging device. Based on the code mapping, the data converter is configured to transcode the reference encoded image data into device-specific image data, which is encoded with the device-specific code values.
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Technologies
Product
Use Cases

Services
Claim
1. Postupak koji obuhvaÄx87a:
- prijem, preko dekodera podataka, kodiranih slikovnih podataka; i
- dekodiranje, dekoderom podataka, kodiranih slikovnih podataka, naznaÄx8den time da navedeno dekodiranje sadrži mapiranje vrijednosti digitalnog koda u kodiranim slikovnim podacima u normalizirane vrijednosti osvijetljenosti zasnovane barem djelomiÄx8dno na funkcionalnom modelu:
image
u kome:
Y je normalizirana vrijednost osvijetljenosti, pri Äx8demu je 0 âx89¤ Y âx89¤ 1,
V je normalizirana vrijednost odgovarajuÄx87e jedne od digitalnih kodnih vrijednosti D kodiranih slikovnih podataka, pri Äx8demu je 0 âx89¤ V âx89¤ 1, i
n, m, c1, c2, i c3 su unaprijed odreÄx91ene vrijednosti, sa:
image
image
image
image
i
image
2. Postupak prema patentnom zahtjevu 1, pri Äx8demu odnos izmeÄx91u normalizirane vrijednosti V i odgovarajuÄx87e digitalne kodne vrijednosti D pruža funkcija:
image
pri Äx8demu je b dubina bita koja odgovara broju bitova koji se koriste za predstavljanje digitalne kodne vrijednosti D.
3. Postupak prema patentnom zahtjevu 2, pri Äx8demu dubina bita b je 10 bita.
4. Postupak prema patentnom zahtjevu 2, pri Äx8demu dubina bita b je 12 bita.
5. Postupak prema patentnom zahtjevu 1, pri Äx8demu digitalna kodna vrijednost D predstavlja uzorkovane vrijednosti komponente slikovnih podataka u signalu serijskog digitalnog interfejsa (SDI).
6. Tok bitova koji sadrži slikovne podatke, naznaÄx8den time da su slikovni podaci kodirani digitalnim kodnim vrijednostima D koji predstavljaju normaliziranu osvijetljenost Y zasnovanu barem djelomiÄx8dno na inverznom funkcionalnom modelu od
image
u kome V je normalizirana vrijednost digitalne kodne vrijednosti D, sa 0 âx89¤ Y âx89¤ 1 i 0 âx89¤ V âx89¤ 1;
pri Äx8demu n, m, c1, c2, i c3 su unaprijed odreÄx91ene vrijednosti, sa:
image
image
image
image
i
image']
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