Hi Hasan, you may just use the bands which have same wavelength with Landsat 7 to calc it.

You can use the U.S. Geological Survey equation

EVI = 2.5 * ((Band 5 – Band 4) / (Band 5 + 6 * Band 4 – 7.5 * Band 2 + 1)).

here is the link for the article

https://landsat.usgs.gov/sites/default/files/documents/si_product_guide.pdf

Thank You Yahia Othman. But I am looking for Advanced Vegetation Index(AVI) formula. Not Enhanced Vegetation Index(EVI) Formula.

Got the formula I was looking for. Article Forest Canopy Density and ASTER DEM based Study for Dense Fo...

The equation that you are looking for LANDSAT 8 is:

𝐴𝑉𝐼 = [(𝐵5 + 1 (65536 − 𝐵4)(𝐵5 − 𝐵4)]^(1/3)

take care that (.....) ^ (1/3) means that what is in parentheses is at a power of 1/3.

Luis Morales-Salinas thanks, I think at the first time it was multiplied by 1/3

Dear Sir,

I need the mode landsat 8 OLI forest mapping, like....AVI, PVI, LAI, GVI,

Any one have a build the model of Erdas imagine software.

Kindly share the model.

Thank You

Dear Ismail Mondal,

You can create a model yourself from ERDAS IMAGINE if you know the formula of each index.

Yes I know that how to built the model,

But 3 indices result are error, PVI, LAI, GVI,

You can help me (You have a this model so kindly sent me)