无法在Kivy中查看tiff图像 [英] Cannot view tiff images in Kivy

问题描述

问题
我可以使用Image()模块加载图片.但是由于某种原因，我无法将.tif文件加载到kivy中.当图像源为'..\pics\lugia.png'时，图像加载完全正常.但是，如果源是'..\pics\snorlax.tif'，我只会得到那个白框和错误:

problem
I am able to load pictures with the Image() module in kivy. But for some reason, I can't load .tif files into kivy. When the image source is '..\pics\lugia.png', the image loads perfectly fine. But if the source is '..\pics\snorlax.tif', I just get that white box and the error:

[WARNING] [Image       ] Unable to load image <C:\Users\path\pics\snorlax.tif>
[ERROR  ] [Image       ] Error loading texture ..\pics\snorlax.tif

代码

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.clock import Clock
from kivy.uix.image import Image

class ContainerBox(BoxLayout):
    def __init__(self, **kwargs):
        super(ContainerBox, self).__init__(**kwargs)
        self.orientation = 'vertical'
        #self.picture = Image(allow_stretch=True, source='..\pics\lugia.png')
        self.picture = Image(allow_stretch=True, source='..\pics\snorlax.tif')
        Clock.schedule_once(lambda dt: self.add_widget(self.picture), timeout=0.1)


class SimpleImage(App):
    def build(self):
        return ContainerBox()

if __name__ == '__main__':
    SimpleImage().run()

技术细节

• 图像来自 veekun.com (任天堂的财产等).
• 所有图像均为64 x64.我只是将其中一些导出为TIFF格式.因此图像大小不应该成为问题.
• 我正在使用Kivy版本1.11.0rc1
• 根据Anaconda的说法，虚拟环境正在运行Python 3.5.6
• 我正在Windows 7上通过PyCharm运行它
• 我的sdl2_image版本为2.0.2，版本0.根据sdl2_image页面，自1.2.5版本以来，sdl2_image已支持tiff.
• 我有libtiff版本4.0.9
• 将文件扩展名从".tif"更改为".tiff"

• The images are from veekun.com (property of nintendo etc).
• All the images are 64 x 64. I just exported some of them into TIFF format. So image size shouldn't be the problem.
• I am using Kivy version 1.11.0rc1
• According to Anaconda, the virtual environment is running Python 3.5.6
• I am running this via PyCharm on Windows 7
• I have sdl2_image version 2.0.2 build 0. According to the sdl2_image page, sdl2_image has supported tiff since version 1.2.5.
• I have libtiff version 4.0.9
• changing the file extension from '.tif' to '.tiff'

我对您的问题
我是在做错什么，还是Kivy不支持TIFF格式?

my question to you
Am I doing something wrong, or does Kivy just not support TIFF format?

推荐答案

您需要创建正确的安装
我使用anaconda安装kivy，但对正确安装依赖项并不十分了解.因此，我必须创建一个全新的虚拟python安装.

You need to create a proper installation
I used anaconda to install kivy and I wasn't very thorough with installing the dependencies properly. So I had to create a fresh virtual python installation.

注意: 这适用于python 3.5或更高版本. 另外，我还将让您明确声明要创建此环境的python安装.据我所知，没有充分的理由这样做.

Note: This is for python version 3.5 or higher. Also I am going to have you explicitly state what python installation is going to be creating this environment. To my knowledge, there's no good reason to do this.

Windows

1. (可选)查找为您安装python的位置.
   启动Windows命令提示符.
   C:\ Users \ H> python
import sys, os
os.path.dirname(sys.executable)
   C:\ Users \ H \ AppData \ Local \ Programs \ Python \ Python36
   因此，我的python安装在 C:\ Users \ H \ AppData \ Local \ Programs \ Python \ Python36 \ python
2. 为新的虚拟环境准备一个位置.
   我在主目录中创建了一个名为"venvs"的文件夹.
   C:\ Users \ H \ venvs
3. 创建新的虚拟环境.我将其命名为"env1".
   启动Windows命令提示符.
   如果您执行了步骤1
   C:\ Users \ H> C:\Users\H\AppData\Local\Programs\Python\Python36\python -m venv C:\Users\H\venvs\env1
   如果您没有执行步骤1
   C:\ Users \ H> python -m venv C:\Users\H\venvs\env1
   
4. 激活新的虚拟环境
   C:\ Users \ H> C:\Users\H\venvs\env1\Scripts\activate
5. 安装依赖项
   (env1)C:\ Users \ H> python -m pip install docutils pygments pypiwin32 kivy_deps.sdl2==0.1.22 kivy_deps.glew==0.1.12
   
6. 安装kivy
   (env1)C:\ Users \ H> python -m pip install kivy==1.11.1
   
7. PyCharm
   如果您使用的是PyCharm，请转到文件">设置"
   从设置菜单项目">项目解释器"
   点击齿轮>添加
   在添加Python解释器"菜单中，选择现有环境"，然后将解释器设置为新虚拟环境的位置.
   我的位置是C:\ Users \ H \ venvs \ env1 \ Scripts \ python.exe.
   单击确定". 在设置菜单中点击应用".一切正常后，您的脚本应该可以查看TIFF文件.

1. (optional) find where python is installed for you.
   Start windows command prompt.
   C:\Users\H>python
import sys, os
os.path.dirname(sys.executable)
   C:\Users\H\AppData\Local\Programs\Python\Python36
   therefore, my python installation is at C:\Users\H\AppData\Local\Programs\Python\Python36\python
2. Prepare a place for your new virtual environment.
   I created a folder called "venvs" in my home directory.
   C:\Users\H\venvs
3. Create new virtual environment. I'll name mine "env1".
   Start windows command prompt.
   if you did step 1
   C:\Users\H>C:\Users\H\AppData\Local\Programs\Python\Python36\python -m venv C:\Users\H\venvs\env1
   if you did not do step 1
   C:\Users\H>python -m venv C:\Users\H\venvs\env1
   
4. Activate the new virtual environment
   C:\Users\H>C:\Users\H\venvs\env1\Scripts\activate
5. Install dependencies
   (env1) C:\Users\H>python -m pip install docutils pygments pypiwin32 kivy_deps.sdl2==0.1.22 kivy_deps.glew==0.1.12
   
6. Install kivy
   (env1) C:\Users\H>python -m pip install kivy==1.11.1
   
7. PyCharm
   If you're using PyCharm, go to File>Settings
   From the settings menu Project>Project Interpreter
   Click the gear>Add
   In the Add Python Interpreter menu select 'Existing environment', then set the interpreter to the location of your new virtual environment.
   Mine was C:\Users\H\venvs\env1\Scripts\python.exe.
   Click Okay. Hit Apply in the settings menu. Once you hit okay, your script should be able to view TIFF files.

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