testXfPyrUp.py

#!/usr/bin/python3.6

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print("Running testXfPyrUp.py ...")
print("Loading overlay")
from pynq import Overlay
bs = Overlay("/usr/local/lib/python3.6/dist-packages/pynq_cv/overlays/xv2pyrUp.bit")
bs.download()

print("Loading xlnk")
from pynq import Xlnk
Xlnk.set_allocator_library('/usr/local/lib/python3.6/dist-packages/pynq_cv/overlays/xv2pyrUp.so')
mem_manager = Xlnk()

import pynq_cv.overlays.xv2pyrUp as xv2
import numpy as np
import cv2
import time

import OpenCVUtils as cvu

print("Loading image ../images/bigBunny_1080.png")
img = cv2.imread('../images/bigBunny_1080.png')
imgYtmp = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)

# downscale before pyrUp
height, width, channels = img.shape 
imgY = cv2.resize(imgYtmp, (width//2,height//2))

height, width = imgY.shape 
print("Size of imgY is ",imgY.shape);

numberOfIterations=10
print("Number of loop iterations: "+str(numberOfIterations))

dstSW = np.ones((height*2,width*2),np.uint8);

xFimgY  = mem_manager.cma_array((height,width),np.uint8) #allocated physically contiguous numpy array 
xFimgY[:] = imgY[:] # copy source data

xFdst = mem_manager.cma_array((height*2,width*2),np.uint8) #allocated physically contiguous numpy array

print("Start SW loop")
startSW=time.time()
for i in range(numberOfIterations):
    cv2.pyrUp(imgY,dst=dstSW) #pyrUp on ARM
stopSW=time.time()


print("Start HW loop")
startPL=time.time()
for i in range(numberOfIterations):
    xv2.pyrUp(xFimgY,dst=xFdst) #pyrUp offloaded to PL, working on physically continuous numpy arrays
stopPL=time.time()
    
print("SW frames per second: ", ((numberOfIterations) / (stopSW - startSW)))
print("PL frames per second: ", ((numberOfIterations) / (stopPL - startPL)))

print("Checking SW and HW results match")
numberOfDifferences,errorPerPixel = cvu.imageCompare(xFdst,dstSW,True,False,0.0)
print("number of differences: "+str(numberOfDifferences)+", average L1 error: "+str(errorPerPixel))

print("Done")