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- 作者：digiKam Community
- 摘录数：10
摘录
To compare visually images side by side, one other tool named Light Table is provided to select the best shots taken from a series. ^ref-12029#14
Similarity database to store image finger-prints for fuzzy search engine. ^ref-23227#31
SQLite is almost always a better solution. ^ref-21744#362
more than 100,000 items. With such large collections, SQLite introduces latency which slows down the application. ^ref-12561#365
Image compression is the application of data compression schemes on digital images. It is done through reducing redundancy of the image data in order to be able to store or transmit data in an efficient form. Image compression can be lossy or lossless. Lossless compression methods are always preferred for their high preservation value for archival purposes before applying transformations like cropping, resizing, color corrections, etc. This is because lossy compression methods, especially when used at low bit rates, introduce compression artifacts. Lossy methods are suitable for natural images such as photos in applications where minor (sometimes imperceptible) loss of fidelity is acceptable to achieve a substantial reduction in file size. Lossy compression is good for image publishing on the Internet. ^ref-57745#33
PNG is designed to work well in on-line viewing applications, such as the World Wide Web, so it is fully streamable with a progressive display option. ^ref-22855#35
Png 是否加载更快
other media streams, such as timed text, audio and video. ^ref-45206#36
This format have been adopted in 2017 to store images in Apple devices. ^ref-61210#37
这个也不错
JPEG XL [https://en.wikipedia.org/wiki/JPEG_XL] is a royalty-free raster-graphics file format that supports both lossy and lossless compression. It is designed to outperform existing raster formats and thus become their universal replacement. JPEG XL is particularly optimised for responsive Web environments, so that content renders well on a wide range of devices. Moreover, it includes several features that help transition from the legacy JPEG format. JPEG XL was introduced at the end of 2020. JPEG XL support 16 bits color depth and metadata. ^ref-24845#37
The only restriction is that you cannot d&d into tag, date or searches. ^ref-41930#48
Why!!!