本文整理汇总了Python中model.utils.net_utils._affine_grid_gen方法的典型用法代码示例。如果您正苦于以下问题：Python net_utils._affine_grid_gen方法的具体用法？Python net_utils._affine_grid_gen怎么用？Python net_utils._affine_grid_gen使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类model.utils.net_utils的用法示例。
在下文中一共展示了net_utils._affine_grid_gen方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _PyramidRoI_Feat
# 需要导入模块: from model.utils import net_utils [as 别名]
# 或者: from model.utils.net_utils import _affine_grid_gen [as 别名]
def _PyramidRoI_Feat(self, feat_maps, rois, im_info):
''' roi pool on pyramid feature maps'''
# do roi pooling based on predicted rois
img_area = im_info[0][0] * im_info[0][1]
h = rois.data[:, 4] - rois.data[:, 2] + 1
w = rois.data[:, 3] - rois.data[:, 1] + 1
roi_level = torch.log(torch.sqrt(h * w) / 224.0) / np.log(2)
roi_level = torch.floor(roi_level + 4)
# --------
# roi_level = torch.log(torch.sqrt(h * w) / 224.0)
# roi_level = torch.round(roi_level + 4)
# ------
roi_level[roi_level < 2] = 2
roi_level[roi_level > 5] = 5
# roi_level.fill_(5)
if cfg.POOLING_MODE == 'crop':
# pdb.set_trace()
# pooled_feat_anchor = _crop_pool_layer(base_feat, rois.view(-1, 5))
# NOTE: need to add pyrmaid
grid_xy = _affine_grid_gen(rois, feat_maps.size()[2:], self.grid_size) ##
grid_yx = torch.stack([grid_xy.data[:,:,:,1], grid_xy.data[:,:,:,0]], 3).contiguous()
roi_pool_feat = self.RCNN_roi_crop(feat_maps, Variable(grid_yx).detach()) ##
if cfg.CROP_RESIZE_WITH_MAX_POOL:
roi_pool_feat = F.max_pool2d(roi_pool_feat, 2, 2)
elif cfg.POOLING_MODE == 'align':
roi_pool_feats = []
box_to_levels = []
for i, l in enumerate(range(2, 6)):
if (roi_level == l).sum() == 0:
continue
idx_l = (roi_level == l).nonzero().squeeze()
box_to_levels.append(idx_l)
scale = feat_maps[i].size(2) / im_info[0][0]
feat = self.RCNN_roi_align(feat_maps[i], rois[idx_l], scale)
roi_pool_feats.append(feat)
roi_pool_feat = torch.cat(roi_pool_feats, 0)
box_to_level = torch.cat(box_to_levels, 0)
idx_sorted, order = torch.sort(box_to_level)
roi_pool_feat = roi_pool_feat[order]
elif cfg.POOLING_MODE == 'pool':
roi_pool_feats = []
box_to_levels = []
for i, l in enumerate(range(2, 6)):
if (roi_level == l).sum() == 0:
continue
idx_l = (roi_level == l).nonzero().squeeze()
box_to_levels.append(idx_l)
scale = feat_maps[i].size(2) / im_info[0][0]
feat = self.RCNN_roi_pool(feat_maps[i], rois[idx_l], scale)
roi_pool_feats.append(feat)
roi_pool_feat = torch.cat(roi_pool_feats, 0)
box_to_level = torch.cat(box_to_levels, 0)
idx_sorted, order = torch.sort(box_to_level)
roi_pool_feat = roi_pool_feat[order]
return roi_pool_feat 示例2: _PyramidRoI_Feat
# 需要导入模块: from model.utils import net_utils [as 别名]
# 或者: from model.utils.net_utils import _affine_grid_gen [as 别名]
def _PyramidRoI_Feat(self, feat_maps, rois, im_info):
''' roi pool on pyramid feature maps'''
# do roi pooling based on predicted rois
img_area = im_info[0][0] * im_info[0][1]
h = rois.data[:, 4] - rois.data[:, 2] + 1
w = rois.data[:, 3] - rois.data[:, 1] + 1
roi_level = torch.log(torch.sqrt(h * w) / 224.0)
roi_level = torch.round(roi_level + 4)
roi_level[roi_level < 2] = 2
roi_level[roi_level > 5] = 5
# roi_level.fill_(5)
if cfg.POOLING_MODE == 'crop':
# pdb.set_trace()
# pooled_feat_anchor = _crop_pool_layer(base_feat, rois.view(-1, 5))
# NOTE: need to add pyrmaid
grid_xy = _affine_grid_gen(rois, base_feat.size()[2:], self.grid_size)
grid_yx = torch.stack([grid_xy.data[:,:,:,1], grid_xy.data[:,:,:,0]], 3).contiguous()
roi_pool_feat = self.RCNN_roi_crop(base_feat, Variable(grid_yx).detach())
if cfg.CROP_RESIZE_WITH_MAX_POOL:
roi_pool_feat = F.max_pool2d(roi_pool_feat, 2, 2)
elif cfg.POOLING_MODE == 'align':
roi_pool_feats = []
box_to_levels = []
for i, l in enumerate(range(2, 6)):
if (roi_level == l).sum() == 0:
continue
idx_l = (roi_level == l).nonzero().squeeze()
box_to_levels.append(idx_l)
scale = feat_maps[i].size(2) / im_info[0][0]
feat = self.RCNN_roi_align(feat_maps[i], rois[idx_l], scale)
roi_pool_feats.append(feat)
roi_pool_feat = torch.cat(roi_pool_feats, 0)
box_to_level = torch.cat(box_to_levels, 0)
idx_sorted, order = torch.sort(box_to_level)
roi_pool_feat = roi_pool_feat[order]
elif cfg.POOLING_MODE == 'pool':
roi_pool_feats = []
box_to_levels = []
for i, l in enumerate(range(2, 6)):
if (roi_level == l).sum() == 0:
continue
idx_l = (roi_level == l).nonzero().squeeze()
box_to_levels.append(idx_l)
scale = feat_maps[i].size(2) / im_info[0][0]
feat = self.RCNN_roi_pool(feat_maps[i], rois[idx_l], scale)
roi_pool_feats.append(feat)
roi_pool_feat = torch.cat(roi_pool_feats, 0)
box_to_level = torch.cat(box_to_levels, 0)
idx_sorted, order = torch.sort(box_to_level)
roi_pool_feat = roi_pool_feat[order]
return roi_pool_feat