def test_full_integral_image_correctness(): ''' Test generated full integral image correctness, note that this relies on the corectness of interpreter and reference.py ''' block_size = (20, 20) size = tuple(x*3 for x in block_size) # generate random test image test_image = [[float(random.randint(0, 255)) for i in xrange(size[0])] for j in xrange(size[1])] # reference implementation integral_ref = reference.gen_integral_image(test_image) sq_integral_ref = reference.gen_integral_squared_image(test_image) # pointer config buffer_size = block_size[0]*block_size[1] src_ptr = 0 integral_ptr = buffer_size sq_integral_ptr = 2*buffer_size # set up interpreter for integral image calculation pe_dim = [s//b for s, b in zip(size, block_size)] def code_gen(code, block_size, args): return gen_code.gen_full_integral_image(code, src_ptr, integral_ptr, sq_integral_ptr, pe_dim, block_size) code = Code() code.set_generator(optimiser_wrapper(code_gen), block_size) sim = Interpreter(code, test_image, block_size) sim.run() # get result of simulator with scaling, truncation turned off and float output integral_test = sim.gen_output_image(1, False, False, True) sq_integral_test = sim.gen_output_image(2, False, False, True) # comparison of reference with blip sim integral_err = compare_images(integral_ref, integral_test) sq_integral_err = compare_images(sq_integral_ref, sq_integral_test) err_eps = 0.001 if not ((integral_err < err_eps) and (sq_integral_err < err_eps)): print 'integral comp:', integral_err print 'squared integral comp:', sq_integral_err print 'rendering instruction stream to file, can take a while' try: f = open('unoptimised_full_integral_image_trace.txt', 'w') def tag_str(instr): return ', '.join(instr.tag) if hasattr(instr, 'tag') else '' f.write('\n'.join(str(x).ljust(40) + ' tags: ' + tag_str(x) for x in code_gen(Code()))) f.close() optim_gen = optimiser_wrapper(code_gen, block_size, {}) f = open('bad_full_integral_image_trace.txt', 'w') def tag_str(instr): return ', '.join(instr.tag) if hasattr(instr, 'tag') else '' f.write('\n'.join(str(x).ljust(40) + ' tags: ' + tag_str(x) for x in optim_gen(Code()))) f.close() except Exception, e: print 'could render instruction stream to file' print 'err: ' + str(e) assert False
def run_test(image, position, shape, block_size): def code_gen(code, block_size, args): return gen_code.gen_fullintegral_sum(code, code.r(4), position, shape, ptr, block_size) code = Code() code.set_generator(optimiser_wrapper(code_gen), block_size) sim = Interpreter(code, image, block_size) sim.run() # extract value return sim.procs[0][0].get_reg_by_name('r4')
def run_test(image, position, shape, block_size): code = Code() out_reg = code.alloc_reg() def code_gen(code, block_size, args): return gen_code.gen_integral_sum(code, out_reg, position, shape, ptr, block_size) code.set_generator(optimiser_wrapper(code_gen), block_size) sim = Interpreter(code, image, block_size) sim.run() # extract value return sim.procs[0][0].get_reg_by_name(str(out_reg))
def run_test(image, position, shape, ptr, block_size): px, py = position x, y, w, h = shape xx = px + x yy = py + y points = ((xx, yy), (xx+w-1, yy), (xx, yy+h-1), (xx+w-1, yy+h-1)) def code_gen(code, block_size, args): return gen_code.gen_fullintegral_sum2_2(code, code.r(4), ptr, points, block_size) code = Code() code.set_generator(optimiser_wrapper(code_gen), block_size) sim = Interpreter(code, image, block_size) sim.run() # extract value return sim.procs[0][0].get_reg_by_name('r4')
def gen_integral_image_correctness(): ''' test if generated integral image is correct, note that this relies on the corectness of interpreter and reference.py ''' # size = (120, 80) # block_size = (40, 40) size = (80, 80) block_size = size # generate random test image test_image = [[float(random.randint(0, 255)) for i in xrange(size[0])] for j in xrange(size[1])] # reference implementation integral_ref = reference.gen_integral_image(test_image) sq_integral_ref = reference.gen_integral_squared_image(test_image) # pointer config buffer_size = block_size[0]*block_size[1] src_ptr = 0 integral_ptr = buffer_size sq_integral_ptr = 2*buffer_size # set up interpreter for integral image calculation def code_gen(code, block_size, args): return gen_code.gen_integral_image(code, src_ptr, integral_ptr, sq_integral_ptr, block_size) code = Code() code.set_generator(optimiser_wrapper(code_gen), block_size) sim = Interpreter(code, test_image, block_size) sim.run() # get result of simulator with scaling, truncation turned off and float output integral_test = sim.gen_output_image(1, False, False, True) sq_integral_test = sim.gen_output_image(2, False, False, True) # comparison of reference with blip sim integral_err = compare_images(integral_ref, integral_test) sq_integral_err = compare_images(sq_integral_ref, sq_integral_test) err_eps = 0.001 if not ((integral_err < err_eps) and (sq_integral_err < err_eps)): print 'integral comp:', integral_err print 'squared integral comp:', sq_integral_err assert False
def run_test(codegen_function, image, cascade, block_size): print 'running %s'%codegen_function.__name__ print 'XXX histogram equalisation is not implemented yet, use violajones impl' print ' before executing simulator' image = reference.equalizeHist(image) width, height = block_size pe_dim = (len(image[0])//width, len(image)//height) args = {'haar_classifier': cascade, 'pe_dim':pe_dim} # now execute the codegen code = Code() code.set_generator(optimiser_wrapper(codegen_function), block_size, args) sim = Interpreter(code, image, block_size, 4) sim.run() detections_pixmap = sim.gen_output_image(1) # result is saved in first buffer # convert the number of rejections in the stages to detections detections = gen_code.convert_pixelmap_to_detections(detections_pixmap, cascade.size) return detections
def run_test(position, integral_test, sq_integral_test, haar_size, block_size): integral_ptr = 0 sq_integral_ptr = block_size[0]*block_size[1] code = Code() out_reg = code.alloc_reg() def code_gen(code, block_size, args): return gen_code.gen_calc_variance(code, out_reg, position, integral_ptr, sq_integral_ptr, haar_size, block_size) code.set_generator(optimiser_wrapper(code_gen), block_size) sim = Interpreter(code, integral_test, block_size) # hack: in order to avoid calculating integral images, inject random values into the sq_integral buffer # this is easy since their is only a single PE for i, row in enumerate(sq_integral_test): for j, v in enumerate(row): sim.procs[0][0].memory.set(sq_integral_ptr + len(row)*i+j, v) sim.run() pe = sim.procs[0][0] # extract value return (1./(pe.get_reg_by_name(str(out_reg)))), pe