update foe to contact for easy understanding

This commit is contained in:
bluepulsar
2025-12-28 20:19:43 +08:00
parent 79c55b7529
commit e8e4fd8625
6 changed files with 493 additions and 49 deletions
+1 -28
View File
@@ -41,6 +41,7 @@ def compute_foe(flow_field, min_magnitude=1.0, expansion_threshold=1, downsample
# 降噪:在计算散度之后对散度图进行平滑
divergence = cv2.GaussianBlur(divergence, (0, 0), denoise_sigma)
divergence = np.where(divergence>0.02, divergence, 0)
# 创建掩码
valid_mask = magnitude > min_magnitude
expansion_mask = (valid_mask & (divergence > expansion_threshold))
@@ -130,31 +131,3 @@ def compute_multiple_foe(flow_field, min_magnitude=1.0, expansion_threshold=0.00
result['expansion_regions'].append(contour)
return result
def smooth_magnitude(mag, method='moving_average', window_size=5, downsample_factor=4):
"""
平滑幅度图以减少梯度计算时的伪影。
Args:
mag: 幅度图,形状为 (H, W) 的 numpy 数组
method: 平滑方法,'moving_average' 或 'windowed_interpolation'
window_size: 移动平均的窗口大小(默认5)
downsample_factor: 窗口插值的下采样因子(默认4)
Returns:
np.ndarray: 平滑后的幅度图
"""
if method == 'moving_average':
# 使用移动平均滤波器(box filter)
kernel = np.ones((window_size, window_size), dtype=np.float32) / (window_size * window_size)
mag_smooth = cv2.filter2D(mag, -1, kernel)
elif method == 'windowed_interpolation':
# 使用窗口插值:下采样然后插值回原尺寸
h, w = mag.shape
mag_downsampled = mag[::downsample_factor, ::downsample_factor]
mag_smooth = cv2.resize(mag_downsampled, (w, h), interpolation=cv2.INTER_CUBIC)
else:
# 默认使用高斯滤波
mag_smooth = gaussian_filter(mag, sigma=1.5)
return mag_smooth
+8 -2
View File
@@ -52,7 +52,7 @@ class Sensor:
# =========================================================================
def __init__(self, vid_src, isstitch=False, verbose=True, cuda=True,
config_name="prototype", cal_path=None, override=False, box=None):
config_name="prototype", cal_path=None, override=False, box=None,mirror=True):
"""
Initialize Sensor with video source and configuration.
@@ -83,6 +83,7 @@ class Sensor:
self.verbose = verbose
self.config_name = config_name
self.cal_path = cal_path
self.mirror = mirror
# State variables
self.stitch_valid = False
@@ -183,6 +184,8 @@ class Sensor:
if log_timing:
timings['total'] = (time.perf_counter() - t_start) * 1000
self._print_timings("get_img", timings)
if self.mirror:
self.img = cv2.flip(self.img, 1)
return self.img
@@ -241,13 +244,16 @@ class Sensor:
return self.flow
def get_foe(self, multiple_foe=False, min_contour_area=3000, min_magnitude=1.0, expansion_threshold=0.01, downsample_factor=1, kernel_size=(5,5), denoise_sigma=15):
def get_contact(self, multiple_foe=False, min_contour_area=3000, min_magnitude=1.0, expansion_threshold=0.01, downsample_factor=1, kernel_size=(5,5), denoise_sigma=15):
if multiple_foe:
return compute_multiple_foe(self.vnormal, min_contour_area=min_contour_area, min_magnitude=min_magnitude, expansion_threshold=expansion_threshold, downsample_factor=downsample_factor, kernel_size=kernel_size, denoise_sigma=denoise_sigma)
else:
return compute_foe(self.vnormal, min_magnitude=min_magnitude, expansion_threshold=expansion_threshold, downsample_factor=downsample_factor, kernel_size=kernel_size, denoise_sigma=denoise_sigma)
def get_depth(self, denoise_sigma=15):
return getFilteredDensity(self.vnormal, use_cuda=self.cuda)
self.depth = getFilteredDensity(self.vnormal, use_cuda=self.cuda)
def update(self):
"""
Convenience method: get_img + compute_deformation in one call.