testXfAdd.py

#!/usr/bin/python3.6

###############################################################################
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print("Running testXfAdd.py ...")
print("Loading overlay")
from pynq import Overlay
bs = Overlay("/usr/local/lib/python3.6/dist-packages/pynq_cv/overlays/xv2add.bit")
bs.download()

print("Loading xlnk")
from pynq import Xlnk
Xlnk.set_allocator_library('/usr/local/lib/python3.6/dist-packages/pynq_cv/overlays/xv2add.so')
mem_manager = Xlnk()

import pynq_cv.overlays.xv2add as xv2
import numpy as np
import cv2
import time

import OpenCVUtils as cvu

print("Loading image ../images/000005_10_L.png")
img1 = cv2.imread('../images/000005_10_L.png')
imgY1 = cv2.cvtColor(img1,cv2.COLOR_BGR2GRAY)

print("Size of imgY1 is ",imgY1.shape);
height, width, channels = img1.shape

print("Loading image ../images/000005_10_R.png")
img2 = cv2.imread('../images/000005_10_R.png')
imgY2 = cv2.cvtColor(img2,cv2.COLOR_BGR2GRAY)

print("Size of imgY2 is ",imgY2.shape);

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

xFimgY1 = cv2.cvtColor(img1,cv2.COLOR_BGR2GRAY)
xFimgY2 = cv2.cvtColor(img2,cv2.COLOR_BGR2GRAY)

print("Start SW loop")
startSW=time.time()
for i in range(numberOfIterations):
    cv2.add(imgY1, imgY2, dst=dstSW) #add on ARM
stopSW=time.time()
print("SW loop finished")

xFdst  = mem_manager.cma_array((height,width),np.uint16) #allocated physically contiguous numpy array

print("Start HW loop")
startPL=time.time()
for i in range(numberOfIterations):
    xv2.add(src1=xFimgY1, src2=xFimgY2, dst=xFdst) #accumulateWeight offloaded to PL, working on physically continuous numpy arrays
stopPL=time.time()
print("HW loop finished")

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")