update

lmj01 · Sep 1, 2023 · bd28fd7 · bd28fd7
1 parent 9a5883a
commit bd28fd7
Show file tree

Hide file tree

Showing 5 changed files with 25 additions and 0 deletions.
diff --git a/gimp/JPEG.md b/gimp/JPEG.md
@@ -1,3 +1,4 @@
+# jpeg格式
 
 ## JPEG
 是一种有损压缩,损失的部分是人眼视觉不容易发现的部分，利用人眼对计算机色彩中的高频信息部分不敏感的特点，研究发现人眼对亮度变换的敏感度比色彩变化的敏感度高，因此可以认为Y分量比UV分量重要，故采样时降低UV分量的采样率。对原始图像进行JPEG编码分成两步：
@@ -46,3 +47,5 @@ quality依赖图像色域，图像的对比度，用户对图像的敏感度
 75% JPEG quality and lower begins to show obvious differences in the image, which can reduce your website user experience.
 60% JPEG quality good for web
 
+## 参考
+- [This section contains TIFF related topics. It includes a freeware TIFF Tag Viewer application, the LibTiff mailing list archive, and a TIFF-specific links page](https://www.awaresystems.be/imaging.html)
diff --git a/gimp/exif.md b/gimp/exif.md
@@ -5,3 +5,13 @@ read, write and edit meta information
 [ExifTool](https://exiftool.org/)工具可以用来查看meta信息
 
 exiftool -a -S -G0 xxx.ext
+
+## extensions
+
+### File
+FileType: JPEG,JPEG,TIFF
+FileTypeExtension: jpg,tif
+MIMEType: image/jpeg,image/tiff
+### EXIF
+oritentation horizontal(normal)
+
diff --git a/index/standard.md b/index/standard.md
@@ -25,6 +25,10 @@
 
 - [图像格式](../others/images.md)
 - [The DICOM Standard Current Edition](https://www.dicomstandard.org/current)
+- [Color Profile](../gimp/ColorProfile.md)
+- [exif tool](../gimp/exif.md)
+- [JPEG](../gimp/JPEG.md)
+- [CT](../cg/ct.md)
 
 ### OHIF
 

diff --git a/nodejs/index.md b/nodejs/index.md
@@ -2,6 +2,7 @@
 
 - [Electron](./electron.md)
 - [NPM](./npm.md)
+- [pnpm](./pnpm.md)
 - [test测试](./test.md)
 - [diff算法](./diff.md)
 - [图像处理](./ImageManipulation.md)

diff --git a/nodejs/pnpm.md b/nodejs/pnpm.md
@@ -0,0 +1,7 @@
+# [pnpm](https://pnpm.io/)
+
+```javascript
+pnpm i // 按照依赖
+pnpm add libName --save // 按照库
+```
+