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logluv 24-bit format

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[color=#333333][font=arial, sans-serif]Hello, everyone.[/font]
[color=#333333][font=arial, sans-serif]I[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]want to know logluv 24-bit format and 32bit [/font][color=#333333][font=arial, sans-serif]format[/font][color=#333333][font=arial, sans-serif].[/font]

[color=#333333][font=arial, sans-serif]I read the paper "Overcoming Gamut and Dynamic Range Limitations in Digital Images".[/font]

[color=#333333][font=arial, sans-serif]But[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]many[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]do not understand[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]after reading.[/font]

[color=#333333][font=arial, sans-serif](1).Did not specify[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]the[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]final[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]14-bit[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]index and to get u' , v'[/font]
[color=#333333][font=arial, sans-serif](2).[/font][color=#333333][font=arial, sans-serif]the[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]Range[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]of[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]the[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]u[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]'and[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]v[/font][color=#333333][font=arial, sans-serif]' [/font][color=#333333][font=arial, sans-serif]in [/font][color=#333333][font=arial, sans-serif]24-bit format.[/font]

[color=#333333][font=arial, sans-serif](3).the [/font][color=#333333][font=arial, sans-serif]Range [1.84*10^19 , 5.44*10^-28] of the [/font][color=#333333][font=arial, sans-serif]32bit [/font][color=#333333][font=arial, sans-serif]format [/font]

luminance (Y)

These records range only need 15-bit , why need the sign bit.
What circumstances require a sign-bit

[color=#333333][font=arial, sans-serif]Thank you[/font][color=#333333][font=arial, sans-serif] [/font][color=#333333][font=arial, sans-serif]so[/font]

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