Python map_rotation_scale Examples

Example #1

if __name__ == '__main__':

    import cv2
    import ipcv
    import os.path
    import time

    home = os.path.expanduser('~')
    filename = home + os.path.sep + 'src/python/examples/data/crowd.jpg'
    filename = home + os.path.sep + 'src/python/examples/data/lenna.tif'
    #filename = home + os.path.sep + 'src/python/examples/data/redhat.ppm'
    #filename = home + os.path.sep + 'src/python/examples/data/lenna_color.tif'
    src = cv2.imread(filename)

    map1, map2 = ipcv.map_rotation_scale(src, rotation=30, scale=[1.3, 0.8])

    startTime = time.clock()
    dst = ipcv.remap(src,
                     map1,
                     map2,
                     interpolation=ipcv.INTER_NEAREST,
                     borderMode=ipcv.BORDER_CONSTANT,
                     borderValue=0)
    elapsedTime = time.clock() - startTime
    print('Elapsed time (remap) = {0} [s]'.format(elapsedTime))

    srcName = 'Source (' + filename + ')'
    cv2.namedWindow(srcName, cv2.WINDOW_AUTOSIZE)
    cv2.imshow(srcName, src)

Example #2

File: HW10_2DDFT.py Project: ccalandra98/Project-Files

if __name__ == '__main__':
    import os.path
    import time
    import cv2
    import ipcv
    import numpy

    home = os.path.expanduser('~')
    filename = home + os.path.sep + 'src/python/examples/data/sparse_checkerboard.tif'
    src = cv2.imread(filename, cv2.IMREAD_UNCHANGED)
    maps = ipcv.map_rotation_scale(src, 0, [0.5, 0.5])
    src = ipcv.remap(src, maps[0], maps[1])

    M = (2**8)
    N = (2**8)
    f = numpy.ones((M, N), dtype=numpy.complex128)

    f = src.astype(numpy.complex128)
    if f.shape[2] == 1:
        f = numpy.reshape(f, (f.shape[0], f.shape[1]))
    #reals = f.real
    #imag = f.imag
    repeats = 2
    print('Repetitions = {0}'.format(repeats))

    startTime = time.clock()
    for repeat in range(repeats):
        F = ipcv.dft2(f, method='break', verbose=True)
    string = 'Average time per transform = {0:.8f} [s] '
    string += '({1}x{2}-point DFT2)'
    print(string.format((time.clock() - startTime) / repeats, M, N))

Example #3

File: map_rotation_scale.py Project: JRJurman/digital-image-processing

PYTHON TEST HARNESS
"""
if __name__ == '__main__':

    import cv2
    import ipcv
    import os.path
    import time

    home = os.path.expanduser('~')
    filename = home + os.path.sep + 'src/python/examples/data/crowd.jpg'
    filename = home + os.path.sep + 'src/python/examples/data/lenna.tif'
    src = cv2.imread(filename)

    startTime = time.clock()
    map1, map2 = ipcv.map_rotation_scale(src, rotation=30, scale=[1.3, 0.8])
    #map1, map2 = ipcv.map_rotation_scale(src, rotation=0, scale=[2.0, 2.0])
    elapsedTime = time.clock() - startTime
    print('Elapsed time (map creation) = {0} [s]'.format(elapsedTime))

    startTime = time.clock()
    dst = cv2.remap(src, map1, map2, cv2.INTER_NEAREST)
    #   dst = ipcv.remap(src, map1, map2, ipcv.INTER_NEAREST)
    elapsedTime = time.clock() - startTime
    print('Elapsed time (remapping) = {0} [s]'.format(elapsedTime))

    srcName = 'Source (' + filename + ')'
    cv2.namedWindow(srcName, cv2.WINDOW_AUTOSIZE)
    cv2.imshow(srcName, src)

    dstName = 'Destination (' + filename + ')'

Example #4

File: HW4_Remap.py Project: ccalandra98/Project-Files

if __name__ == '__main__':
    import numpy
    import cv2
    import ipcv
    import os.path
    import time

    home = os.path.expanduser('~')
    #filename = home + os.path.sep + 'src/python/examples/data/crowd.jpg'
    filename = home + os.path.sep + 'src/python/examples/data/lenna.tif'
    #filename = home + os.path.sep + 'src/python/examples/data/photo1.png'
    #filename = home + os.path.sep + 'src/python/examples/data/jernigan_joseph_paul.jpg'

    src = cv2.imread(filename)
    startTime = time.clock()
    map1, map2 = ipcv.map_rotation_scale(src, rotation=45, scale=[2, 2])
    elapsedTime = time.clock() - startTime
    print('Elapsed time (RST) = {0} [s]'.format(elapsedTime))

    startTime = time.clock()
    dst = ipcv.remap(src,
                     map1,
                     map2,
                     cv2.INTER_NEAREST,
                     borderMode=ipcv.BORDER_REPLICATE)
    elapsedTime = time.clock() - startTime
    print('Elapsed time (remap) = {0} [s]'.format(elapsedTime))

    srcName = 'Source (' + filename + ')'
    cv2.namedWindow(srcName, cv2.WINDOW_AUTOSIZE)
    cv2.imshow(srcName, src)

Example #5

File: HW9_Harris.py Project: ccalandra98/Project-Files

if __name__ == '__main__':

    import os.path
    import time
    import cv2
    import ipcv
    import numpy

    home = os.path.expanduser('~')
    filename = home + os.path.sep + 'src/python/examples/data/checkerboard.tif'
    filename = home + os.path.sep + 'src/python/examples/data/gecko.jpg'
    filename = home + os.path.sep + \
               'src/python/examples/data/sparse_checkerboard.tif'

    src = cv2.imread(filename, cv2.IMREAD_UNCHANGED)
    src = ipcv.map_rotation_scale()

    sigma = 1
    k = 0.01
    startTime = time.time()
    dst = ipcv.harris(src, sigma, k)
    print('Elapsed time = {0} [s]'.format(time.time() - startTime))

    cv2.namedWindow(filename, cv2.WINDOW_AUTOSIZE)
    cv2.imshow(filename, src)

    if len(src.shape) == 2:
        annotatedImage = cv2.merge((src, src, src))
    else:
        annotatedImage = src
    fractionMaxResponse = 0.25