Save a layer as a separate image

[wwangxinhao]

def print_xobjects_info(pdf_path):
doc = fitz.open(pdf_path)

# 获取文档中的所有图层
layers = doc.get_ocgs()
print("All Layers:", layers)

# 获取当前文档中所有图层的信息
all_layers_info = doc.get_layer()
print("All Layers Info:", all_layers_info)

#可见性设置
# 设置图层可见性(可见性设置是管用的，但是并没有删除图层)
doc.set_layer(-1, on=[21, 25, 223, 267, 227, 13, 235], off=[256])
# # 保存修改
# doc.save("modified_document.pdf")

# 再次获取图层信息，检查是否设置成功
updated_layers_info = doc.get_layer()
print("Updated Layers Info:", updated_layers_info)

layers = doc.get_ocgs()
print("All Layers:", layers)

#获取图像信息
page_iamges = doc.get_page_xobjects(0)
print("page_iamges:", page_iamges)


# 加载第一页
page = doc.load_page(0)


# 获取页面 pixmap
pixmap = page.get_pixmap()

# 将 Pixmap 转换为 PIL Image
img = Image.frombytes("RGB", [pixmap.width, pixmap.height], pixmap.samples)

# 保存图像，文件名以图层名命名
img_filename = f"page_0.png"
img.save(img_filename)
print(f"Saved: {img_filename}")

doc.close()

Example usage

pdf_path = 'test/test.pdf'
print_xobjects_info(pdf_path)

this is mycode， doc.set_layer is work ,but i dont know how to save a separate image, for example layer 21

[JorjMcKie]

1. You do not need Pillow to save PNG or JPEG images. Simply use pix.save() giving the filename the appropriate extemsion.
2. When you activate a layer, then all content extraction and Pixmap creation will react to this.