how to reduce the LUT consumption of guidedFilter ，or can I use more BRAM_18K or DSP to reduce the consumption of LUT)

[mingyuexin447]

  Hello，today T use HLS to achive a guidedFilter ,but the process of  a  single color channel involves 6 boxfilters and 4  hls::Resize, and the LUT consumption is too big,especially the consumption of hls::Resize.
Here are  the combined results. ( By the way, can I use more BRAM_18K or DSP to reduce the consumption of LUT)
 
the total resource consumption of guidedfilter
the resource consumption of fast guidedfilter
the instance of fast guidedfilter

[shameera]

HI @mingyuexin447 ,

Have you tried using a resource pragma in your code ? If the RESOURCE pragma is not specified, Vivado HLS determines the resource to use.

Generally using a resource pragma we would be explicitly specifying which library resource is used to implement a variable (array, arithmetic operation or function argument) in the RTL.