Snapchat Filters: Personalizing the Trend of Taking Photos

Snapchat Filters are a type of design overlay effect that users can add after taking a photo. These Filters can add color effects, display location or weather information, and highlight special events, among other things.

Independent merchants can promote their products through Sponsored Filters.

Independent merchants can now promote their products, events, brands, and locations by creating Sponsored Filters. These Sponsored Filters must include a visible brand logo or name.

In addition, Snapchat Lenses use augmented reality technology to change the user's appearance or the surrounding environment when taking photos. Lenses can add 3D effects, characters, objects, etc.

Snapchat Lenses use face detection algorithms to apply special effects to users' faces before they take pictures. This algorithm uses the Viola-Jones algorithm to identify facial features that are similar among most people, known as Haar features. Then, the Active Shape Model further detects the user's features. This model creates a 3D model of the user's face that can be moved and scaled through machine learning.

Using Snapchat's Lens Web Builder, independent sellers can use augmented reality technology to create realistic 3D Lens campaigns. Like Filters, Sponsored Lenses must include a visible brand logo or name.

The Discover section offers users a variety of Stories.

In the Discover section of the Stories page, users can find various types of Stories, including publishers, creators, Snap stars, and sponsored Stories.

The Discover section features many brands advertising through Snap Stories. These story ads consist of 3 to 20 individual image or video ads that users can view by tapping on the brand icon.

While users can choose to remove their own Stories from public Stories, the viewing time of Snaps submitted to public Stories may vary on Snapchat.

The Snap Score algorithm is related to Snaps and Stories.

Snapchat不会透露Snap score的具体计算方法，就像不会透露"Best Friends"（最佳朋友）算法一样。然而，根据Tinuiti的报道，Snapchat会考虑用户发送和接收的Snaps照片数量以及发布的Stories故事数量。

Once all recipients have viewed a user's photos, Snapchat will delete them. If a Snap is not opened within 30 days, it will be deleted.

Snapchat automatically deletes viewed or expired chat records and Snaps. Stories are deleted after 24 hours. Users can also set Stories to be automatically saved to the Memories folder.

The frequency of chatting between Snapchat users and someone else only affects the potential Best Friends status, as the chat content includes photos or videos. Traditional conversation information, such as text messages or photos or videos not stored as Snaps, does not count towards the Best Friends status.

The number of followers is only displayed on Snapchat when the user sets it to be displayed, and by default, it is not displayed.