tools/plot_histogramv2.py

import matplotlib.pyplot as plt
import numpy as np

# 数据
categories = ['DINO-B/8', 'DINO-B/16', 'SAM-B/16', 'SAM-L/16', 'DINOv2-B/14', 'DINOv2-L/14']
x = np.arange(len(categories)) - 0.6  # 整体向左平移，使得第一组更靠近 y 轴

# 每个分组的结果数据（去掉 CityScape）
VOC21 = [59.7, 61.5, 55.0, 58.9, 64.1, 62.8]
COCO_Obj = [31.2, 32.3, 25.8, 30.7, 38.7, 36.7]
OV_COCO = [42.0, 41.8, 42.6, 42.5, 43.3, 43.3]

# 设置柱状图宽度
width = 0.25  # 调整宽度以适应更少的类别

# 创建图形
fig, ax = plt.subplots(figsize=(8, 4))  # 调整图形大小

# 绘制柱状图，调整颜色和填充
bars1 = ax.bar(x - width, VOC21, width, label=r'VOC21', color='#1f77b4', edgecolor='white', hatch='X')  # 第1组
bars2 = ax.bar(x, COCO_Obj, width, label=r'COCO-Obj', color="#ff7f0e", edgecolor='white', hatch='X')  # 第2组
bars3 = ax.bar(x + width, OV_COCO, width, label=r'OV-COCO', color='#2ca02c', edgecolor='white', hatch='X')  # 第3组

# 添加标题和标签
ax.set_xticks(x)
ax.set_xticklabels(categories, fontsize=16, ha='center')  # 调整字体大小并居中显示

# 自动放置 legend，略微调大方块显示
ax.legend(fontsize=14, loc='upper center', bbox_to_anchor=(0.46, 1.0), ncol=3, frameon=True, 
          handletextpad=0.5, columnspacing=1.0, handlelength=1.5, handleheight=1.3)  
# handlelength 和 handleheight 稍微调大

# 在柱状图上添加数值，并标注最大值
highlight_fontsize = 15  # 可手动调整红色加粗文本的字体大小
for bar, value in zip(bars1, VOC21):
    if value == max(VOC21):
        ax.text(bar.get_x() + bar.get_width() / 2, bar.get_height(), f'{value:.1f}', 
                ha='center', va='bottom', fontsize=highlight_fontsize, color='red', fontweight='bold')
    else:
        ax.text(bar.get_x() + bar.get_width() / 2, bar.get_height(), f'{value:.1f}', 
                ha='center', va='bottom', fontsize=14)

for bar, value in zip(bars2, COCO_Obj):
    if value == max(COCO_Obj):
        ax.text(bar.get_x() + bar.get_width() / 2, bar.get_height(), f'{value:.1f}', 
                ha='center', va='bottom', fontsize=highlight_fontsize, color='red', fontweight='bold')
    else:
        ax.text(bar.get_x() + bar.get_width() / 2, bar.get_height(), f'{value:.1f}', 
                ha='center', va='bottom', fontsize=14)

for bar, value in zip(bars3, OV_COCO):
    if value == max(OV_COCO):  # 两个最大值都加粗
        ax.text(bar.get_x() + bar.get_width() / 2, bar.get_height(), f'{value:.1f}', 
                ha='center', va='bottom', fontsize=highlight_fontsize, color='red', fontweight='bold')
    else:
        ax.text(bar.get_x() + bar.get_width() / 2, bar.get_height(), f'{value:.1f}', 
                ha='center', va='bottom', fontsize=14)

# 美化图形
ax.spines['top'].set_visible(False)
ax.spines['right'].set_visible(False)

# 保存为图片
plt.tight_layout()
plt.savefig('vfm_ablation.png', dpi=300)