Retrieving information from a Mask_RCNN Tensor
I've succesfully trained a Mask_RCNN, and for illustration purposes, let's focus on this sample image the network generates:
It's all very good, no problem. What I'd like to achieve however is to have the following variables with their values per instance:
mask: (as an image which shows the detected object only, like a binary map)
box: (as a list)
mask_border_positions (x,y) : (as a list)
mask_center_position (x,y) : (as a tuple)
I've also the function which visualizes the above image, from the official site:
def display_instances(image, boxes, masks, class_ids, class_names,
scores=None, title="",
figsize=(16, 16), ax=None,
show_mask=True, show_bbox=True,
colors=None, captions=None):
"""
boxes: [num_instance, (y1, x1, y2, x2, class_id)] in image coordinates.
masks: [height, width, num_instances]
class_ids: [num_instances]
class_names: list of class names of the dataset
scores: (optional) confidence scores for each box
title: (optional) Figure title
show_mask, show_bbox: To show masks and bounding boxes or not
figsize: (optional) the size of the image
colors: (optional) An array or colors to use with each object
captions: (optional) A list of strings to use as captions for each object
"""
# Number of instances
N = boxes.shape[0]
if not N:
print("n*** No instances to display *** n")
else:
assert boxes.shape[0] == masks.shape[-1] == class_ids.shape[0]
# If no axis is passed, create one and automatically call show()
auto_show = False
if not ax:
_, ax = plt.subplots(1, figsize=figsize)
auto_show = True
# Generate random colors
colors = colors or random_colors(N)
# Show area outside image boundaries.
height, width = image.shape[:2]
ax.set_ylim(height + 10, -10)
ax.set_xlim(-10, width + 10)
ax.axis('off')
ax.set_title(title)
masked_image = image.astype(np.uint32).copy()
for i in range(N):
color = colors[i]
# Bounding box
if not np.any(boxes[i]):
# Skip this instance. Has no bbox. Likely lost in image cropping.
continue
y1, x1, y2, x2 = boxes[i]
if show_bbox:
p = patches.Rectangle((x1, y1), x2 - x1, y2 - y1, linewidth=2,
alpha=0.7, linestyle="dashed",
edgecolor=color, facecolor='none')
ax.add_patch(p)
# Label
if not captions:
class_id = class_ids[i]
score = scores[i] if scores is not None else None
label = class_names[class_id]
x = random.randint(x1, (x1 + x2) // 2)
caption = "{} {:.3f}".format(label, score) if score else label
else:
caption = captions[i]
ax.text(x1, y1 + 8, caption,
color='w', size=11, backgroundcolor="none")
# Mask
mask = masks[:, :, i]
if show_mask:
masked_image = apply_mask(masked_image, mask, color)
# Mask Polygon
# Pad to ensure proper polygons for masks that touch image edges.
padded_mask = np.zeros(
(mask.shape[0] + 2, mask.shape[1] + 2), dtype=np.uint8)
padded_mask[1:-1, 1:-1] = mask
contours = find_contours(padded_mask, 0.5)
for verts in contours:
# Subtract the padding and flip (y, x) to (x, y)
verts = np.fliplr(verts) - 1
p = Polygon(verts, facecolor="none", edgecolor=color)
ax.add_patch(p)
ax.imshow(masked_image.astype(np.uint8))
if auto_show:
plt.show()
These code snippets below are then called in the main as follows:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
masks_prediction = np.zeros((510, 510, len(file_names)))
for i in range(len(file_names)):
print(i)
image = skimage.io.imread(file_names[i])
predictions = model.detect([image], verbose=1)
p = predictions[0]
masks = p['masks']
merged_mask = np.zeros((masks.shape[0], masks.shape[1]))
for j in range(masks.shape[2]):
merged_mask[masks[:,:,j]==True] = True
masks_prediction[:,:,i] = merged_mask
print(masks_prediction.shape)
and:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
class_names = ['BG', 'car', 'traffic_light', 'person']
test_image = skimage.io.imread(file_names[random.randint(0,len(file_names)-1)])
predictions = model.detect([test_image], verbose=1) # We are replicating the same image to fill up the batch_size
p = predictions[0]
visualize.display_instances(test_image, p['rois'], p['masks'], p['class_ids'],
class_names, p['scores'])
I know it's probably a trivial question and they already exist in the code somewhere, but since I am a starter, I could not get the mask outliers or their centers. If there is a way to have these information per instance, it would be great.
Thanks in advance.
python tensorflow
add a comment |
I've succesfully trained a Mask_RCNN, and for illustration purposes, let's focus on this sample image the network generates:
It's all very good, no problem. What I'd like to achieve however is to have the following variables with their values per instance:
mask: (as an image which shows the detected object only, like a binary map)
box: (as a list)
mask_border_positions (x,y) : (as a list)
mask_center_position (x,y) : (as a tuple)
I've also the function which visualizes the above image, from the official site:
def display_instances(image, boxes, masks, class_ids, class_names,
scores=None, title="",
figsize=(16, 16), ax=None,
show_mask=True, show_bbox=True,
colors=None, captions=None):
"""
boxes: [num_instance, (y1, x1, y2, x2, class_id)] in image coordinates.
masks: [height, width, num_instances]
class_ids: [num_instances]
class_names: list of class names of the dataset
scores: (optional) confidence scores for each box
title: (optional) Figure title
show_mask, show_bbox: To show masks and bounding boxes or not
figsize: (optional) the size of the image
colors: (optional) An array or colors to use with each object
captions: (optional) A list of strings to use as captions for each object
"""
# Number of instances
N = boxes.shape[0]
if not N:
print("n*** No instances to display *** n")
else:
assert boxes.shape[0] == masks.shape[-1] == class_ids.shape[0]
# If no axis is passed, create one and automatically call show()
auto_show = False
if not ax:
_, ax = plt.subplots(1, figsize=figsize)
auto_show = True
# Generate random colors
colors = colors or random_colors(N)
# Show area outside image boundaries.
height, width = image.shape[:2]
ax.set_ylim(height + 10, -10)
ax.set_xlim(-10, width + 10)
ax.axis('off')
ax.set_title(title)
masked_image = image.astype(np.uint32).copy()
for i in range(N):
color = colors[i]
# Bounding box
if not np.any(boxes[i]):
# Skip this instance. Has no bbox. Likely lost in image cropping.
continue
y1, x1, y2, x2 = boxes[i]
if show_bbox:
p = patches.Rectangle((x1, y1), x2 - x1, y2 - y1, linewidth=2,
alpha=0.7, linestyle="dashed",
edgecolor=color, facecolor='none')
ax.add_patch(p)
# Label
if not captions:
class_id = class_ids[i]
score = scores[i] if scores is not None else None
label = class_names[class_id]
x = random.randint(x1, (x1 + x2) // 2)
caption = "{} {:.3f}".format(label, score) if score else label
else:
caption = captions[i]
ax.text(x1, y1 + 8, caption,
color='w', size=11, backgroundcolor="none")
# Mask
mask = masks[:, :, i]
if show_mask:
masked_image = apply_mask(masked_image, mask, color)
# Mask Polygon
# Pad to ensure proper polygons for masks that touch image edges.
padded_mask = np.zeros(
(mask.shape[0] + 2, mask.shape[1] + 2), dtype=np.uint8)
padded_mask[1:-1, 1:-1] = mask
contours = find_contours(padded_mask, 0.5)
for verts in contours:
# Subtract the padding and flip (y, x) to (x, y)
verts = np.fliplr(verts) - 1
p = Polygon(verts, facecolor="none", edgecolor=color)
ax.add_patch(p)
ax.imshow(masked_image.astype(np.uint8))
if auto_show:
plt.show()
These code snippets below are then called in the main as follows:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
masks_prediction = np.zeros((510, 510, len(file_names)))
for i in range(len(file_names)):
print(i)
image = skimage.io.imread(file_names[i])
predictions = model.detect([image], verbose=1)
p = predictions[0]
masks = p['masks']
merged_mask = np.zeros((masks.shape[0], masks.shape[1]))
for j in range(masks.shape[2]):
merged_mask[masks[:,:,j]==True] = True
masks_prediction[:,:,i] = merged_mask
print(masks_prediction.shape)
and:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
class_names = ['BG', 'car', 'traffic_light', 'person']
test_image = skimage.io.imread(file_names[random.randint(0,len(file_names)-1)])
predictions = model.detect([test_image], verbose=1) # We are replicating the same image to fill up the batch_size
p = predictions[0]
visualize.display_instances(test_image, p['rois'], p['masks'], p['class_ids'],
class_names, p['scores'])
I know it's probably a trivial question and they already exist in the code somewhere, but since I am a starter, I could not get the mask outliers or their centers. If there is a way to have these information per instance, it would be great.
Thanks in advance.
python tensorflow
add a comment |
I've succesfully trained a Mask_RCNN, and for illustration purposes, let's focus on this sample image the network generates:
It's all very good, no problem. What I'd like to achieve however is to have the following variables with their values per instance:
mask: (as an image which shows the detected object only, like a binary map)
box: (as a list)
mask_border_positions (x,y) : (as a list)
mask_center_position (x,y) : (as a tuple)
I've also the function which visualizes the above image, from the official site:
def display_instances(image, boxes, masks, class_ids, class_names,
scores=None, title="",
figsize=(16, 16), ax=None,
show_mask=True, show_bbox=True,
colors=None, captions=None):
"""
boxes: [num_instance, (y1, x1, y2, x2, class_id)] in image coordinates.
masks: [height, width, num_instances]
class_ids: [num_instances]
class_names: list of class names of the dataset
scores: (optional) confidence scores for each box
title: (optional) Figure title
show_mask, show_bbox: To show masks and bounding boxes or not
figsize: (optional) the size of the image
colors: (optional) An array or colors to use with each object
captions: (optional) A list of strings to use as captions for each object
"""
# Number of instances
N = boxes.shape[0]
if not N:
print("n*** No instances to display *** n")
else:
assert boxes.shape[0] == masks.shape[-1] == class_ids.shape[0]
# If no axis is passed, create one and automatically call show()
auto_show = False
if not ax:
_, ax = plt.subplots(1, figsize=figsize)
auto_show = True
# Generate random colors
colors = colors or random_colors(N)
# Show area outside image boundaries.
height, width = image.shape[:2]
ax.set_ylim(height + 10, -10)
ax.set_xlim(-10, width + 10)
ax.axis('off')
ax.set_title(title)
masked_image = image.astype(np.uint32).copy()
for i in range(N):
color = colors[i]
# Bounding box
if not np.any(boxes[i]):
# Skip this instance. Has no bbox. Likely lost in image cropping.
continue
y1, x1, y2, x2 = boxes[i]
if show_bbox:
p = patches.Rectangle((x1, y1), x2 - x1, y2 - y1, linewidth=2,
alpha=0.7, linestyle="dashed",
edgecolor=color, facecolor='none')
ax.add_patch(p)
# Label
if not captions:
class_id = class_ids[i]
score = scores[i] if scores is not None else None
label = class_names[class_id]
x = random.randint(x1, (x1 + x2) // 2)
caption = "{} {:.3f}".format(label, score) if score else label
else:
caption = captions[i]
ax.text(x1, y1 + 8, caption,
color='w', size=11, backgroundcolor="none")
# Mask
mask = masks[:, :, i]
if show_mask:
masked_image = apply_mask(masked_image, mask, color)
# Mask Polygon
# Pad to ensure proper polygons for masks that touch image edges.
padded_mask = np.zeros(
(mask.shape[0] + 2, mask.shape[1] + 2), dtype=np.uint8)
padded_mask[1:-1, 1:-1] = mask
contours = find_contours(padded_mask, 0.5)
for verts in contours:
# Subtract the padding and flip (y, x) to (x, y)
verts = np.fliplr(verts) - 1
p = Polygon(verts, facecolor="none", edgecolor=color)
ax.add_patch(p)
ax.imshow(masked_image.astype(np.uint8))
if auto_show:
plt.show()
These code snippets below are then called in the main as follows:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
masks_prediction = np.zeros((510, 510, len(file_names)))
for i in range(len(file_names)):
print(i)
image = skimage.io.imread(file_names[i])
predictions = model.detect([image], verbose=1)
p = predictions[0]
masks = p['masks']
merged_mask = np.zeros((masks.shape[0], masks.shape[1]))
for j in range(masks.shape[2]):
merged_mask[masks[:,:,j]==True] = True
masks_prediction[:,:,i] = merged_mask
print(masks_prediction.shape)
and:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
class_names = ['BG', 'car', 'traffic_light', 'person']
test_image = skimage.io.imread(file_names[random.randint(0,len(file_names)-1)])
predictions = model.detect([test_image], verbose=1) # We are replicating the same image to fill up the batch_size
p = predictions[0]
visualize.display_instances(test_image, p['rois'], p['masks'], p['class_ids'],
class_names, p['scores'])
I know it's probably a trivial question and they already exist in the code somewhere, but since I am a starter, I could not get the mask outliers or their centers. If there is a way to have these information per instance, it would be great.
Thanks in advance.
python tensorflow
I've succesfully trained a Mask_RCNN, and for illustration purposes, let's focus on this sample image the network generates:
It's all very good, no problem. What I'd like to achieve however is to have the following variables with their values per instance:
mask: (as an image which shows the detected object only, like a binary map)
box: (as a list)
mask_border_positions (x,y) : (as a list)
mask_center_position (x,y) : (as a tuple)
I've also the function which visualizes the above image, from the official site:
def display_instances(image, boxes, masks, class_ids, class_names,
scores=None, title="",
figsize=(16, 16), ax=None,
show_mask=True, show_bbox=True,
colors=None, captions=None):
"""
boxes: [num_instance, (y1, x1, y2, x2, class_id)] in image coordinates.
masks: [height, width, num_instances]
class_ids: [num_instances]
class_names: list of class names of the dataset
scores: (optional) confidence scores for each box
title: (optional) Figure title
show_mask, show_bbox: To show masks and bounding boxes or not
figsize: (optional) the size of the image
colors: (optional) An array or colors to use with each object
captions: (optional) A list of strings to use as captions for each object
"""
# Number of instances
N = boxes.shape[0]
if not N:
print("n*** No instances to display *** n")
else:
assert boxes.shape[0] == masks.shape[-1] == class_ids.shape[0]
# If no axis is passed, create one and automatically call show()
auto_show = False
if not ax:
_, ax = plt.subplots(1, figsize=figsize)
auto_show = True
# Generate random colors
colors = colors or random_colors(N)
# Show area outside image boundaries.
height, width = image.shape[:2]
ax.set_ylim(height + 10, -10)
ax.set_xlim(-10, width + 10)
ax.axis('off')
ax.set_title(title)
masked_image = image.astype(np.uint32).copy()
for i in range(N):
color = colors[i]
# Bounding box
if not np.any(boxes[i]):
# Skip this instance. Has no bbox. Likely lost in image cropping.
continue
y1, x1, y2, x2 = boxes[i]
if show_bbox:
p = patches.Rectangle((x1, y1), x2 - x1, y2 - y1, linewidth=2,
alpha=0.7, linestyle="dashed",
edgecolor=color, facecolor='none')
ax.add_patch(p)
# Label
if not captions:
class_id = class_ids[i]
score = scores[i] if scores is not None else None
label = class_names[class_id]
x = random.randint(x1, (x1 + x2) // 2)
caption = "{} {:.3f}".format(label, score) if score else label
else:
caption = captions[i]
ax.text(x1, y1 + 8, caption,
color='w', size=11, backgroundcolor="none")
# Mask
mask = masks[:, :, i]
if show_mask:
masked_image = apply_mask(masked_image, mask, color)
# Mask Polygon
# Pad to ensure proper polygons for masks that touch image edges.
padded_mask = np.zeros(
(mask.shape[0] + 2, mask.shape[1] + 2), dtype=np.uint8)
padded_mask[1:-1, 1:-1] = mask
contours = find_contours(padded_mask, 0.5)
for verts in contours:
# Subtract the padding and flip (y, x) to (x, y)
verts = np.fliplr(verts) - 1
p = Polygon(verts, facecolor="none", edgecolor=color)
ax.add_patch(p)
ax.imshow(masked_image.astype(np.uint8))
if auto_show:
plt.show()
These code snippets below are then called in the main as follows:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
masks_prediction = np.zeros((510, 510, len(file_names)))
for i in range(len(file_names)):
print(i)
image = skimage.io.imread(file_names[i])
predictions = model.detect([image], verbose=1)
p = predictions[0]
masks = p['masks']
merged_mask = np.zeros((masks.shape[0], masks.shape[1]))
for j in range(masks.shape[2]):
merged_mask[masks[:,:,j]==True] = True
masks_prediction[:,:,i] = merged_mask
print(masks_prediction.shape)
and:
file_names = glob(os.path.join(IMAGE_DIR, "*.jpg"))
class_names = ['BG', 'car', 'traffic_light', 'person']
test_image = skimage.io.imread(file_names[random.randint(0,len(file_names)-1)])
predictions = model.detect([test_image], verbose=1) # We are replicating the same image to fill up the batch_size
p = predictions[0]
visualize.display_instances(test_image, p['rois'], p['masks'], p['class_ids'],
class_names, p['scores'])
I know it's probably a trivial question and they already exist in the code somewhere, but since I am a starter, I could not get the mask outliers or their centers. If there is a way to have these information per instance, it would be great.
Thanks in advance.
python tensorflow
python tensorflow
asked Nov 21 '18 at 15:25
SchützeSchütze
42526
42526
add a comment |
add a comment |
1 Answer
1
active
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votes
The following does it right:
masks = p['masks']
class_ids = p['class_ids']
rois = p['rois']
scores = p['scores']
bounding_box = rois[enumerator]
as for the outline coordinates:
def getBoundaryPositions(im):
class_ids = p['class_ids'] # for usage convenience
im = im.astype(np.uint8)
# Find contours:
(im, contours, hierarchy) = cv2.findContours(im, cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_NONE)
cnts = contours[0]
outline_posesXY = np.array([np.append(x[0]) for x in cnts])
# Calculate image moments of the detected contour
M = cv2.moments(contours[0])
# collect pose points (for now only position because we don't have pose) of the center
positionXY =
positionXY.append(round(M['m10'] / M['m00']))
positionXY.append(round(M['m01'] / M['m00']))
return (im, positionXY, outline_posesXY)
add a comment |
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1 Answer
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active
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The following does it right:
masks = p['masks']
class_ids = p['class_ids']
rois = p['rois']
scores = p['scores']
bounding_box = rois[enumerator]
as for the outline coordinates:
def getBoundaryPositions(im):
class_ids = p['class_ids'] # for usage convenience
im = im.astype(np.uint8)
# Find contours:
(im, contours, hierarchy) = cv2.findContours(im, cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_NONE)
cnts = contours[0]
outline_posesXY = np.array([np.append(x[0]) for x in cnts])
# Calculate image moments of the detected contour
M = cv2.moments(contours[0])
# collect pose points (for now only position because we don't have pose) of the center
positionXY =
positionXY.append(round(M['m10'] / M['m00']))
positionXY.append(round(M['m01'] / M['m00']))
return (im, positionXY, outline_posesXY)
add a comment |
The following does it right:
masks = p['masks']
class_ids = p['class_ids']
rois = p['rois']
scores = p['scores']
bounding_box = rois[enumerator]
as for the outline coordinates:
def getBoundaryPositions(im):
class_ids = p['class_ids'] # for usage convenience
im = im.astype(np.uint8)
# Find contours:
(im, contours, hierarchy) = cv2.findContours(im, cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_NONE)
cnts = contours[0]
outline_posesXY = np.array([np.append(x[0]) for x in cnts])
# Calculate image moments of the detected contour
M = cv2.moments(contours[0])
# collect pose points (for now only position because we don't have pose) of the center
positionXY =
positionXY.append(round(M['m10'] / M['m00']))
positionXY.append(round(M['m01'] / M['m00']))
return (im, positionXY, outline_posesXY)
add a comment |
The following does it right:
masks = p['masks']
class_ids = p['class_ids']
rois = p['rois']
scores = p['scores']
bounding_box = rois[enumerator]
as for the outline coordinates:
def getBoundaryPositions(im):
class_ids = p['class_ids'] # for usage convenience
im = im.astype(np.uint8)
# Find contours:
(im, contours, hierarchy) = cv2.findContours(im, cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_NONE)
cnts = contours[0]
outline_posesXY = np.array([np.append(x[0]) for x in cnts])
# Calculate image moments of the detected contour
M = cv2.moments(contours[0])
# collect pose points (for now only position because we don't have pose) of the center
positionXY =
positionXY.append(round(M['m10'] / M['m00']))
positionXY.append(round(M['m01'] / M['m00']))
return (im, positionXY, outline_posesXY)
The following does it right:
masks = p['masks']
class_ids = p['class_ids']
rois = p['rois']
scores = p['scores']
bounding_box = rois[enumerator]
as for the outline coordinates:
def getBoundaryPositions(im):
class_ids = p['class_ids'] # for usage convenience
im = im.astype(np.uint8)
# Find contours:
(im, contours, hierarchy) = cv2.findContours(im, cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_NONE)
cnts = contours[0]
outline_posesXY = np.array([np.append(x[0]) for x in cnts])
# Calculate image moments of the detected contour
M = cv2.moments(contours[0])
# collect pose points (for now only position because we don't have pose) of the center
positionXY =
positionXY.append(round(M['m10'] / M['m00']))
positionXY.append(round(M['m01'] / M['m00']))
return (im, positionXY, outline_posesXY)
answered Dec 20 '18 at 10:53
SchützeSchütze
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