def demo_videos():
"""
Demo of dm_tracker on imagenet videos
"""
args = parse_args()
np.random.seed(args.seed)
vidDir = '/home/dpathak/local/data/trash/videos'
imDir = vidDir + '_im'
vidPathList = utils.read_r(vidDir, '*.mp4')
# vidPathList = vidPathList[5:]
utils.mkdir_p(imDir)
for i in range(len(vidPathList)):
print('Video: ', vidPathList[i])
tmpDir = imDir + '/' + vidPathList[i].split('/')[-1][:-4]
utils.mkdir_p(tmpDir)
# imSeq = utils.vid2im(vidPathList[i])
# assert imSeq.size > 0, "Error reading video file"
# for j in range(imSeq.shape[0]):
# Image.fromarray(imSeq[j]).save(tmpDir + '/frame_%05d.jpg' % j)
imPathList = utils.read_r(tmpDir, '*.jpg')
if len(imPathList) < 2:
print('Not enough images in image directory: \n%s' % tmpDir)
print('Continuing to next one ...')
continue
outdir = tmpDir.split('/')
outdir[-2] = outdir[-2][:-3] + '_result'
outdir = '/'.join(outdir)
run_dm_sequence(outdir, imPathList, args.frameGap, args.dmThresh,
args.matchNbr, args.shotFrac, args.postTrackHomTh,
args.preTrackHomTh, args.use_epic, args.vizFlow,
args.vizTr, args.cpysrc)
def demo_imagenet():
"""
Demo of dm_tracker on imagenet videos
"""
args = parse_args()
np.random.seed(args.seed)
if args.imdir == '':
imagenetVideoList = '/mnt/vol/gfsai-local/ai-group/users/bharathh/' + \
'imagenet_videos/ILSVRC2015/ImageSets/VID/' + \
'train_10.txt'
imagenetRoot = '/mnt/vol/gfsai-local/ai-group/users/bharathh/' + \
'imagenet_videos/ILSVRC2015/Data/VID/train/'
with open(imagenetVideoList, 'r') as f:
lines = f.readlines()
imdirs = [x.strip().split(' ')[0] for x in lines]
imdirs = imdirs[np.random.randint(len(imdirs))]
args.imdir = os.path.join(imagenetRoot, imdirs)
args.outdir = os.path.join(args.outdir, imdirs)
# read image files
imPathList = utils.read_r(args.imdir, '*.*')
if len(imPathList) < 2:
print('Not enough images in image directory: \n%s' % args.imdir)
return
# run deep match tracker
run_dm_sequence(args.outdir, imPathList, args.frameGap, args.dmThresh,
args.matchNbr, args.shotFrac, args.postTrackHomTh,
args.preTrackHomTh, args.use_epic, args.vizFlow,
args.vizTr, args.cpysrc)
def run_epicFlow_sequence(imPathList, flowdir, deepmatchdir, vizFlow=False):
"""
Run EpicFlow Code on a sequence of images of video to obtain tracks.
To be run after epic flow code.
"""
fList = []
if os.path.isdir(flowdir):
fList = utils.read_r(flowdir, '*.flo')
if not len(fList) == len(imPathList) - 1 or len(fList) == 0:
utils.mkdir_p(flowdir)
if vizFlow:
utils.mkdir_p(flowdir + '/viz_flow/')
for i in range(len(imPathList) - 1):
deepmatchfile = deepmatchdir + 'match_%04d.txt' % i
run_epicFlow_pair(imPathList[i], imPathList[i + 1], flowdir,
deepmatchfile, i, vizFlow)
sys.stdout.write('Pairwise EpicFlow: [% 5.1f%%]\r' %
(100.0 * float(i / len(imPathList))))
sys.stdout.flush()
if vizFlow:
import subprocess
subprocess.call([
'tar', '-zcf', flowdir + '/viz_flow.tar.gz', '-C',
flowdir + '/viz_flow', '.'
])
print('Pairwise EpicFlow completed.')
else:
print('Pairwise EpicFlows already present in outdir. Using them.')
def run_pre_homography(outdir, matchdir, homTh, imH, imW, dmThresh, imPathList,
vizHomo):
"""
Run per frame homogrpahy on matching files of deepmatch or epic flow
"""
if homTh < 0:
return
utils.rmdir_f(outdir)
utils.mkdir_p(outdir)
mList = utils.read_r(matchdir, '*.txt')
if vizHomo:
col = np.array([255, 0, 0], dtype='int')
utils.mkdir_p(outdir + '/viz_homo/')
for i in range(len(mList)):
matches = read_dmOutput(mList[i], imH, imW, dmThresh, False)
matches = frame_homography(matches, homTh)
# fit to coordinates to image size
matches = np.minimum(matches, np.array([imW, imH, imW, imH]) - 1)
matches = np.maximum(matches, np.array([0]))
matchfile = outdir + 'match_%04d.txt' % i
np.savetxt(matchfile, matches, fmt='%d')
if matches.size > 0 and vizHomo:
im = np.array(Image.open(imPathList[i]))
im = Image.fromarray(
utils.draw_point_im(im, matches[:, [1, 0]], col, sizeOut=10))
im.save(outdir + '/viz_homo/%s' % (imPathList[i].split('/')[-1]))
sys.stdout.write('Pairwise pre-tracking homogrpahy: [% 5.1f%%]\r' %
(100.0 * float(i / len(mList))))
sys.stdout.flush()
import subprocess
subprocess.call([
'tar', '-zcf', outdir + '/viz_homo.tar.gz', '-C', outdir + '/viz_homo',
'.'
])
print('Pairwise pre-tracking homogrpahy completed.')
def demo_images():
"""
Input is the path of file containing list of directories of video images.
"""
# Hard coded parameters
# VSB has 121 images per video
# FBMS has 100-250 images per video
# DAVIS has 60-70 images per video
# For Shot:
maxShots = 5
vmax = 0.6
colBins = 40
# For NLC:
redirect = True # redirecting to output file ? won't print status
frameGap = 0 # 0 means adjusted automatically per shot (not per video)
maxSide = 650 # max length of longer side of Im
minShot = 10 # minimum shot length
maxShot = 110 # longer shots will be shrinked between [maxShot/2, maxShot]
binTh = 0.7 # final thresholding to obtain mask
clearVoteBlobs = True # remove small blobs in consensus vote; uses binTh
relEnergy = binTh - 0.1 # relative energy in consensus vote blob removal
clearFinalBlobs = True # remove small blobs finally; uses binTh
maxsp = 400
iters = 50
# For CRF:
gtProb = 0.7
posTh = binTh
negTh = 0.4
# For blob removal post CRF: more like salt-pepper noise removal
bSize = 25 # 0 means not used, [0,1] relative, >=1 means absolute
# parse commandline parameters
args = parse_args()
np.random.seed(args.seed)
doload = bool(args.doload)
dosave = bool(args.dosave)
# read directory names
with open(args.imdirFile) as f:
imDirs = f.readlines()
imDirs = [line.rstrip('\n') for line in imDirs]
# keep only the current shard
if args.shardId >= args.numShards:
print('Give valid shard id which is less than numShards')
exit(1)
imDirs = [
x for i, x in enumerate(imDirs) if i % args.numShards == args.shardId
]
print('NUM SHARDS: %03d, SHARD ID: %03d, CURRENT NUM VIDEOS: %03d\n\n' %
(args.numShards, args.shardId, len(imDirs)))
for imdir in imDirs:
# setup input directory
print(
'-------------------------------------------------------------\n')
print('Video InputDir: ', imdir)
numTries = 0
totalTries = 2
sleepTime = 60
while numTries < totalTries:
imPathList = utils.read_r(imdir, '*.jpg')
# imPathList = imPathList + utils.read_r(imdir, '*.bmp')
if len(imPathList) < 1:
print('Failed to load ! Trying again in %d seconds' %
sleepTime)
numTries += 1
time.sleep(sleepTime) # delays for x seconds
else:
break
if len(imPathList) < 2:
print('Not enough images in image directory: \n%s' % imdir)
# print('Continuing to next one ...')
# continue
assert False, 'Image directory does not exist !!'
# setup output directory
suffix = imdir.split('/')[-1]
suffix = imdir.split('/')[-2] if suffix == '' else suffix
outNlcIm = args.baseOutdir.split('/') + \
['nlcim', 'shard%03d' % args.shardId] + imdir.split('/')[3:]
outNlcPy = args.baseOutdir.split('/') + ['nlcpy'
] + imdir.split('/')[3:]
outCrf = args.baseOutdir.split('/') + \
['crfim', 'shard%03d' % args.shardId] + imdir.split('/')[3:]
outIm = args.baseOutdir.split('/') + \
['im', 'shard%03d' % args.shardId] + imdir.split('/')[3:]
outNlcIm = '/'.join(outNlcIm)
outNlcPy = '/'.join(outNlcPy)
outCrf = '/'.join(outCrf)
outIm = '/'.join(outIm)
outVidNlc = args.baseOutdir + '/nlcvid/'
outVidCRF = args.baseOutdir + '/crfvid/'
utils.mkdir_p(outNlcIm)
utils.mkdir_p(outNlcPy)
utils.mkdir_p(outCrf)
utils.mkdir_p(outIm)
utils.mkdir_p(outVidNlc)
utils.mkdir_p(outVidCRF)
print('Video OutputDir: ', outNlcIm)
# resize images if needed
h, w, c = np.array(Image.open(imPathList[0])).shape
frac = min(min(1. * maxSide / h, 1. * maxSide / w), 1.0)
if frac < 1.0:
h, w, c = imresize(np.array(Image.open(imPathList[0])), frac).shape
imSeq = np.zeros((len(imPathList), h, w, c), dtype=np.uint8)
for i in range(len(imPathList)):
if frac < 1.0:
imSeq[i] = imresize(np.array(Image.open(imPathList[i])), frac)
else:
imSeq[i] = np.array(Image.open(imPathList[i]))
# First run shot detector
if not doload:
shotIdx = vid2shots.vid2shots(imSeq,
maxShots=maxShots,
vmax=vmax,
colBins=colBins)
if dosave:
np.save(outNlcPy + '/shotIdx_%s.npy' % suffix, shotIdx)
else:
shotIdx = np.load(outNlcPy + '/shotIdx_%s.npy' % suffix)
print('Total Shots: ', shotIdx.shape, shotIdx)
# Adjust frameGap per shot, and then run NLC per shot
for s in range(shotIdx.shape[0]):
suffixShot = suffix + '_shot%d' % (s + 1)
shotS = shotIdx[s] # 0-indexed, included
shotE = imSeq.shape[0] if s == shotIdx.shape[0] - 1 \
else shotIdx[s + 1] # 0-indexed, excluded
shotL = shotE - shotS
if shotL < minShot:
continue
frameGapLocal = frameGap
if frameGapLocal <= 0 and shotL > maxShot:
frameGapLocal = int(shotL / maxShot)
imPathList1 = imPathList[shotS:shotE:frameGapLocal + 1]
imSeq1 = imSeq[shotS:shotE:frameGapLocal + 1]
print('\nShot: %d, Shape: ' % (s + 1), imSeq1.shape)
if not doload:
maskSeq = nlc.nlc(imSeq1,
maxsp=maxsp,
iters=iters,
outdir=outNlcPy,
suffix=suffixShot,
clearBlobs=clearVoteBlobs,
binTh=binTh,
relEnergy=relEnergy,
redirect=redirect,
doload=doload,
dosave=dosave)
if clearFinalBlobs:
maskSeq = nlc.remove_low_energy_blobs(maskSeq, binTh)
if dosave:
np.save(outNlcPy + '/mask_%s.npy' % suffixShot, maskSeq)
if doload:
maskSeq = np.load(outNlcPy + '/mask_%s.npy' % suffixShot)
# run crf, run blob removal and save as images sequences
sTime = time.time()
crfSeq = np.zeros(maskSeq.shape, dtype=np.uint8)
for i in range(maskSeq.shape[0]):
# save soft score as png between 0 to 100.
# Use binTh*100 to get FG in later usage.
mask = (maskSeq[i] * 100).astype(np.uint8)
Image.fromarray(mask).save(outNlcIm + '/' +
imPathList1[i].split('/')[-1][:-4] +
'.png')
Image.fromarray(imSeq1[i]).save(outIm + '/' +
imPathList1[i].split('/')[-1])
crfSeq[i] = crf.refine_crf(imSeq1[i],
maskSeq[i],
gtProb=gtProb,
posTh=posTh,
negTh=negTh,
crfParams=args.crfParams)
crfSeq[i] = utils.refine_blobs(crfSeq[i], bSize=bSize)
Image.fromarray(
crfSeq[i]).save(outCrf + '/' +
imPathList1[i].split('/')[-1][:-4] +
'.png')
if not redirect:
sys.stdout.write(
'CRF, blob removal and saving: [% 5.1f%%]\r' %
(100.0 * float((i + 1) / maskSeq.shape[0])))
sys.stdout.flush()
eTime = time.time()
print('CRF, blob removal and saving images finished: %.2f s' %
(eTime - sTime))
# save as video
sTime = time.time()
vidName = '_'.join(imdir.split('/')[3:]) + '_shot%d.avi' % (s + 1)
utils.im2vid(outVidNlc + vidName, imSeq1,
(maskSeq > binTh).astype(np.uint8))
utils.im2vid(outVidCRF + vidName, imSeq1, crfSeq)
eTime = time.time()
print('Saving videos finished: %.2f s' % (eTime - sTime))
# Tarzip the results of this shard and delete the individual files
import subprocess
for i in ['im', 'crfim', 'nlcim']:
tarDir = args.baseOutdir + '/%s/shard%03d' % (i, args.shardId)
subprocess.call(['tar', '-zcf', tarDir + '.tar.gz', '-C', tarDir, '.'])
utils.rmdir_f(tarDir)
return
def demo_videos():
"""
Input is the path of directory containing raw videos
"""
# Hard coded parameters
maxSide = 600 # max length of longer side of Im
lenSeq = 35 # longer seq will be shrinked between [lenSeq/2, lenSeq]
binTh = 0.4 # final thresholding to obtain mask
clearFinalBlobs = True # remove low energy blobs; uses binTh
vidDir = '/home/dpathak/local/data/trash/videos'
# parse commandline parameters
args = parse_args()
np.random.seed(args.seed)
print('InputDir: ', vidDir)
print('OutputDir: ', args.outdir)
vidPathList = utils.read_r(vidDir, '*.mp4')
for i in range(len(vidPathList)):
print('\nCurrent VideoPath: ', vidPathList[i])
# load video
imSeq = utils.vid2im(vidPathList[i])
n, h, w, c = imSeq.shape
# adjust frameGap
frameGap = args.frameGap
if frameGap <= 0 and n > lenSeq:
frameGap = int(n / lenSeq)
imSeq = imSeq[::frameGap + 1]
n = imSeq.shape[0]
# adjust size
frac = min(min(1. * maxSide / h, 1. * maxSide / w), 1.0)
if frac < 1.0:
h, w, c = imresize(imSeq[0], frac).shape
imSeq2 = np.zeros((n, h, w, c), dtype=np.uint8)
for j in range(n):
imSeq2[j] = imresize(imSeq[j], frac)
imSeq = imSeq2
print('Total Video Shape: ', imSeq.shape)
if imSeq.shape[1] < 2:
print('Not enough images in this video')
print('Continuing to next one ...')
continue
# setup output directory
suffix = vidPathList[i].split('/')[-1]
suffix = vidPathList[i].split('/')[-2] if suffix == '' else suffix
suffix = suffix[:-4]
outdirV = args.outdir + '/' + suffix
utils.mkdir_p(outdirV)
print('OutputDir for current Video: ', outdirV)
# run the algorithm
maskSeq = nlc(imSeq,
maxsp=args.maxsp,
iters=args.iters,
outdir=outdirV)
np.save(outdirV + '/mask_%s.npy' % suffix, maskSeq)
# save visual results
if clearFinalBlobs:
maskSeq = remove_low_energy_blobs(maskSeq, binTh)
utils.rmdir_f(outdirV + '/result_%s/' % suffix)
utils.mkdir_p(outdirV + '/result_%s/' % suffix)
outvidfile = outdirV + '/video_%s.avi' % suffix
utils.im2vid(outvidfile, imSeq, maskSeq)
for i in range(maskSeq.shape[0]):
mask = (maskSeq[i] > binTh).astype(np.uint8)
grayscaleimage = (color.rgb2gray(imSeq[i]) * 255.).astype(np.uint8)
imMasked = np.zeros(imSeq[i].shape, dtype=np.uint8)
for c in range(3):
imMasked[:, :, c] = grayscaleimage / 2 + 127
imMasked[mask.astype(np.bool), 1:] = 0
Image.fromarray(imMasked).save(outdirV +
'/result_%s/frame_%05d.png' %
(suffix, i))
import subprocess
subprocess.call([
'tar', '-zcf', outdirV + '/../result_%s.tar.gz' % suffix, '-C',
outdirV + '/result_%s/' % suffix, '.'
])
return
def demo_images():
"""
Input is the path of directory (imdir) containing images of a video
"""
# Hard coded parameters
maxSide = 600 # max length of longer side of Im
lenSeq = 35 # longer seq will be shrinked between [lenSeq/2, lenSeq]
binTh = 0.4 # final thresholding to obtain mask
clearFinalBlobs = True # remove low energy blobs; uses binTh
# parse commandline parameters
args = parse_args()
np.random.seed(args.seed)
if args.imdir == '':
imagenetVideoList = '/mnt/vol/gfsai-local/ai-group/users/bharathh/' + \
'imagenet_videos/ILSVRC2015/ImageSets/VID/' + \
'train_10.txt'
imagenetRoot = '/mnt/vol/gfsai-local/ai-group/users/bharathh/' + \
'imagenet_videos/ILSVRC2015/Data/VID/train/'
with open(imagenetVideoList, 'r') as f:
lines = f.readlines()
imdirs = [x.strip().split(' ')[0] for x in lines]
imdirs = imdirs[np.random.randint(len(imdirs))]
args.imdir = os.path.join(imagenetRoot, imdirs)
args.outdir = os.path.join(args.outdir, imdirs)
# setup input directory
print('InputDir: ', args.imdir)
imPathList = utils.read_r(args.imdir, '*.*')
if len(imPathList) < 2:
print('Not enough images in image directory: \n%s' % args.imdir)
return
# setup output directory
suffix = args.imdir.split('/')[-1]
suffix = args.imdir.split('/')[-2] if suffix == '' else suffix
args.outdir = args.outdir + '/' + suffix
utils.mkdir_p(args.outdir)
print('OutputDir: ', args.outdir)
# load image sequence after adjusting frame gap and imsize
frameGap = args.frameGap
if frameGap <= 0 and len(imPathList) > lenSeq:
frameGap = int(len(imPathList) / lenSeq)
imPathList = imPathList[0:len(imPathList):frameGap + 1]
h, w, c = np.array(Image.open(imPathList[0])).shape
frac = min(min(1. * maxSide / h, 1. * maxSide / w), 1.0)
if frac < 1.0:
h, w, c = imresize(np.array(Image.open(imPathList[0])), frac).shape
imSeq = np.zeros((len(imPathList), h, w, c), dtype=np.uint8)
for i in range(len(imPathList)):
if frac < 1.0:
imSeq[i] = imresize(np.array(Image.open(imPathList[i])), frac)
else:
imSeq[i] = np.array(Image.open(imPathList[i]))
print('Total Video Shape: ', imSeq.shape)
# run the algorithm
maskSeq = nlc(imSeq,
maxsp=args.maxsp,
iters=args.iters,
outdir=args.outdir)
np.save(args.outdir + '/mask_%s.npy' % suffix, maskSeq)
# save visual results
if clearFinalBlobs:
maskSeq = remove_low_energy_blobs(maskSeq, binTh)
utils.rmdir_f(args.outdir + '/result_%s/' % suffix)
utils.mkdir_p(args.outdir + '/result_%s/' % suffix)
for i in range(maskSeq.shape[0]):
mask = (maskSeq[i] > binTh).astype(np.uint8)
grayscaleimage = (color.rgb2gray(imSeq[i]) * 255.).astype(np.uint8)
imMasked = np.zeros(imSeq[i].shape, dtype=np.uint8)
for c in range(3):
imMasked[:, :, c] = grayscaleimage / 2 + 127
imMasked[mask.astype(np.bool), 1:] = 0
Image.fromarray(imMasked).save(args.outdir + '/result_%s/' % suffix +
imPathList[i].split('/')[-1])
import subprocess
subprocess.call([
'tar', '-zcf', args.outdir + '/../result_%s.tar.gz' % suffix, '-C',
args.outdir + '/result_%s/' % suffix, '.'
])
return
def run_dm_sequence(outdir,
imPathList,
frameGap=0,
dmThresh=0,
matchNbr=10,
shotFrac=0,
postTrackHomTh=-1,
preTrackHomTh=-1,
use_epic=False,
vizFlow=False,
vizTr=False,
cpysrc=False):
"""
Run DeepMatch Code on a sequence of images of video to obtain tracks
"""
print('Outdir: ', outdir)
# adjust image list according to frame Gap
imPathList = imPathList[0:len(imPathList):frameGap + 1]
# compute pariwise deepmatch across frames
deepmatchdir = outdir + '/matches/'
mList = []
if os.path.isdir(deepmatchdir):
mList = utils.read_r(deepmatchdir, '*.txt')
if not len(mList) == len(imPathList) - 1 or len(mList) == 0:
utils.mkdir_p(deepmatchdir)
for i in range(len(imPathList) - 1):
matchfile = deepmatchdir + 'match_%04d.txt' % i
run_dm_pair(imPathList[i], imPathList[i + 1], matchfile)
sys.stdout.write('Pairwise DeepMatch: [% 5.1f%%]\r' %
(100.0 * float(i / len(imPathList))))
sys.stdout.flush()
print('Pairwise DeepMatch completed.')
else:
print('Pairwise DeepMatches already present in outdir. Using them.')
# use epic flow densification process
if use_epic:
# TODO: rescore deepmatch
flowdir = outdir + '/flow/'
run_epicFlow_sequence(imPathList, flowdir, deepmatchdir, vizFlow)
matchdir = flowdir
dmThresh = -1 # deepmatch score no longer matters
else:
matchdir = deepmatchdir
# run homography before matching sequences
imW, imH = Image.open(imPathList[0]).size
if preTrackHomTh > 0:
preHomMatchdir = outdir + '/pre_homographies/'
run_pre_homography(preHomMatchdir, matchdir, preTrackHomTh, imH, imW,
dmThresh, imPathList, True)
matchdir = preHomMatchdir
dmThresh = -1 # deepmatch score no longer matters
# resolve pairwise deep-matches to obtain sequence tracks
totalShotTracks, shotends = match_sequence(imH, imW, matchdir, dmThresh,
matchNbr, shotFrac)
# after above tracking, find foreground points using homography
if postTrackHomTh > 0:
startF = 0
for endF in np.nditer(shotends):
currshotTracks = totalShotTracks[startF:endF + 1,
totalShotTracks[endF, :,
0] > -1000]
fgPts = shot_homography(currshotTracks, postTrackHomTh)
totalShotTracks[startF:endF + 1, :] = -1000
totalShotTracks[startF:endF + 1, :fgPts.shape[1]] = fgPts
startF = endF + 1
# save matches: no longer need duplicated frame tuples
totalShotTracks = totalShotTracks[:, :, :2]
np.save(outdir + '/totalShotTracks.npy', totalShotTracks)
np.save(outdir + '/shotends.npy', shotends)
# visualize deepmatch tracks on images and save them
if vizTr and totalShotTracks.size > 0:
col = np.array([255, 0, 0], dtype='int')
totalShotTracks.transpose()
shotNum = 0
utils.rmdir_f(outdir + '/viz_tracks/')
utils.mkdir_p(outdir + '/viz_tracks/%d' % shotNum)
for i in range(len(imPathList)):
validPts = totalShotTracks[i, totalShotTracks[i, :, 0] > -1000]
im = np.array(Image.open(imPathList[i]))
im = Image.fromarray(
utils.draw_point_im(im, validPts[:, ::-1], col, sizeOut=10))
im.save(outdir + '/viz_tracks/%d/%s' %
(shotNum, imPathList[i].split('/')[-1]))
if i == shotends[shotNum] and i < len(imPathList) - 1:
shotNum += 1
utils.mkdir_p(outdir + '/viz_tracks/%d' % shotNum)
import subprocess
subprocess.call([
'tar', '-zcf', outdir + '/viz_tracks.tar.gz', '-C',
outdir + '/viz_tracks', '.'
])
print('Track visualization saved.')
# copy src images to output dir for which tracking performed
if cpysrc:
from shutil import copy
utils.mkdir_p(outdir + '/origImages/')
for i in range(len(imPathList)):
copy(imPathList[i], outdir + '/origImages/')
print('Source images copied to outdir.')
def match_sequence(imH, imW, matchdir, dmThresh=0, matchNbr=10, shotFrac=0):
"""
Perform matches for a sequence of pairwise deepmatch
Input:
imH, imW: video height and width
matchdir: dir of matches: x0, y0, x1, y1, score, index
dmThresh: l-bound for score of deepmatched points to use
matchNbr: Neighborhood pixel tolerance for tracked points b/w frames
shotFrac: l-bound on fraction of points to be tracked in a temporal shot
Output: nFrames x nPoints x 2 : (x,y) of fully tracked points
"""
def calc_match(list1, list2):
"""
Input:
list1: nxd array
list2: mxd array
Output:
matchInd: nx1 array containing indicex of closest pt in list2
matchDist: nx1 array containing distance from closest pt in list2
"""
pairwiseDist = np.sqrt(
np.sum(np.square(list1[..., None] - list2[..., None].T), axis=1))
matchInd = np.argmin(pairwiseDist, axis=1)
matchDist = np.amin(pairwiseDist, axis=1)
return matchInd, matchDist
matchNbr *= np.sqrt(2)
mList = utils.read_r(matchdir, '*.txt')
# total shots: (numFrames,numPts,4)
# 4 denotes (x,y) of common frame across pairs; kept for accurate homography
totalShotTracks = np.ones((0, 0, 4), dtype='int')
currShotTracks = np.ones((0, 0, 4), dtype='int')
shotends = [] # value is zero indexed and included
# perform frame wise matching
for i in range(len(mList)):
trackCurr = read_dmOutput(mList[i], imH, imW, dmThresh)
if currShotTracks.size == 0:
# empty match file: may happen after homography
if trackCurr.size == 0:
continue
initNumTracks = trackCurr.shape[0]
currShotTracks = np.ones(
(1 + len(mList), initNumTracks, 4), dtype='int') * -1000
currShotTracks[i, :, :2] = trackCurr[:, :2]
currShotTracks[i + 1, :, :2] = trackCurr[:, 2:4]
continue
if trackCurr.size != 0:
matchInd, matchDist = calc_match(currShotTracks[i, :, :2],
trackCurr[:, :2])
currNumTracks = matchInd[matchDist <= matchNbr].shape[0]
if trackCurr.size == 0 or currNumTracks <= shotFrac * initNumTracks:
# store just finished shot
shotends.append(i)
currShotTracks = currShotTracks[:, currShotTracks[i, :, 0] > -1000]
oldTotal = totalShotTracks
totalShotTracks = np.ones(
(1 + i, max(oldTotal.shape[1], currShotTracks.shape[1]), 4),
dtype='int') * -1000
totalShotTracks[:oldTotal.shape[0], :oldTotal.shape[1]] = \
np.copy(oldTotal)
totalShotTracks[oldTotal.shape[0]:, :currShotTracks.shape[1]] = \
np.copy(currShotTracks[oldTotal.shape[0]:1 + i])
currShotTracks = np.ones((0, 0, 4), dtype='int')
else:
currShotTracks[i, matchDist <= matchNbr, 2:] = \
trackCurr[matchInd[matchDist <= matchNbr], :2]
currShotTracks[i + 1, matchDist <= matchNbr, :2] = \
trackCurr[matchInd[matchDist <= matchNbr], 2:4]
sys.stdout.write('Matching sequences for tracking: [% 5.1f%%]\r' %
(100.0 * float(i / len(mList))))
sys.stdout.flush()
# store last completed shot
shotends.append(len(mList))
oldTotal = totalShotTracks
if currShotTracks.size != 0:
currShotTracks = currShotTracks[:, currShotTracks[-1, :, 0] > -1000]
totalShotTracks = np.ones(
(1 + len(mList), max(oldTotal.shape[1],
currShotTracks.shape[1]), 4),
dtype='int') * -1000
totalShotTracks[:oldTotal.shape[0], :oldTotal.shape[1]] = \
np.copy(oldTotal)
totalShotTracks[oldTotal.shape[0]:, :currShotTracks.shape[1]] = \
np.copy(currShotTracks[oldTotal.shape[0]:])
else:
totalShotTracks = np.ones(
(1 + len(mList), max(oldTotal.shape[1], trackCurr.shape[0]), 4),
dtype='int') * -1000
totalShotTracks[:oldTotal.shape[0], :oldTotal.shape[1]] = \
np.copy(oldTotal)
print('Matching sequences for tracking completed: %d shots.' %
len(shotends))
return totalShotTracks, np.array(shotends)
def demo_images():
"""
Input is the path of directory (imdir) containing images of a video
"""
# Hard coded parameters
maxSide = 400 # max length of longer side of Im
lenSeq = 1e8 # longer seq will be shrinked between [lenSeq/2, lenSeq]
# parse commandline parameters
args = parse_args()
np.random.seed(args.seed)
if args.imdir == '':
imagenetVideoList = '/mnt/vol/gfsai-local/ai-group/users/bharathh/' + \
'imagenet_videos/ILSVRC2015/ImageSets/VID/' + \
'train_10.txt'
imagenetRoot = '/mnt/vol/gfsai-local/ai-group/users/bharathh/' + \
'imagenet_videos/ILSVRC2015/Data/VID/train/'
with open(imagenetVideoList, 'r') as f:
lines = f.readlines()
imdirs = [x.strip().split(' ')[0] for x in lines]
imdirs = imdirs[np.random.randint(len(imdirs))]
args.imdir = os.path.join(imagenetRoot, imdirs)
args.outdir = os.path.join(args.outdir, imdirs)
# setup input directory
print('InputDir: ', args.imdir)
imPathList = utils.read_r(args.imdir, '*.*')
if len(imPathList) < 2:
print('Not enough images in image directory: \n%s' % args.imdir)
return
# setup output directory
suffix = args.imdir.split('/')[-1]
suffix = args.imdir.split('/')[-2] if suffix == '' else suffix
args.outdir = args.outdir + '/' + suffix
utils.mkdir_p(args.outdir)
print('OutputDir: ', args.outdir)
# load image sequence after adjusting frame gap and imsize
frameGap = args.frameGap
if frameGap <= 0 and len(imPathList) > lenSeq:
frameGap = int(len(imPathList) / lenSeq)
imPathList = imPathList[0:len(imPathList):frameGap + 1]
h, w, c = np.array(Image.open(imPathList[0])).shape
frac = min(min(1. * maxSide / h, 1. * maxSide / w), 1.0)
if frac < 1.0:
h, w, c = imresize(np.array(Image.open(imPathList[0])), frac).shape
imSeq = np.zeros((len(imPathList), h, w, c), dtype=np.uint8)
for i in range(len(imPathList)):
if frac < 1.0:
imSeq[i] = imresize(np.array(Image.open(imPathList[i])), frac)
else:
imSeq[i] = np.array(Image.open(imPathList[i]))
print('Total Video Shape: ', imSeq.shape)
# run the algorithm
shotIdx = vid2shots(imSeq,
maxShots=args.maxShots,
vmax=args.vmax,
colBins=args.colBins)
print('Total Shots: ', shotIdx.shape, shotIdx)
np.save(args.outdir + '/shotIdx_%s.npy' % suffix, shotIdx)
# save visual results
from PIL import ImageDraw
utils.rmdir_f(args.outdir + '/shots_%s/' % suffix)
utils.mkdir_p(args.outdir + '/shots_%s/' % suffix)
frameNo = 1
shotNo = 0
for i in range(imSeq.shape[0]):
img = Image.fromarray(imSeq[i])
draw = ImageDraw.Draw(img)
if i in shotIdx:
draw.text((100, 100), "New Shot Begins !!", (255, 255, 255))
shotNo += 1
frameNo = 1
draw.text((10, 10), "Shot: %02d, Frame: %03d" % (shotNo, frameNo),
(255, 255, 255))
img.save(args.outdir + '/shots_%s/' % suffix +
imPathList[i].split('/')[-1])
frameNo += 1
import subprocess
subprocess.call([
'tar', '-zcf', args.outdir + '/../shots_%s.tar.gz' % suffix, '-C',
args.outdir + '/shots_%s/' % suffix, '.'
])
return