Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.
There used to be countless companies making flagship Android phones, but a combination of factors has narrowed the field over time. Today, Samsung is the undisputed king of the Android device ecosystem with its Galaxy S line. So we can safely assume today's Unpacked has revealed the most popular Android phones for the next year—the Galaxy S26 Ultra, Galaxy S26+, and Galaxy S26.
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Have you been looking for an excuse to buy a robot vacuum? Well, if $600 off a great model sounds like a good excuse to you, check out this Amazon deal on the Ecovacs Deebot X9 Pro Omni. As of Feb. 27, this robot vacuum is down to $699, a 46% discount off the list price. Not only that, but according to camelcamelcamel, it's never been cheaper than this before.
外因則是精準的捕獲。賈煜表示，「一些平台通過捕捉老年人對『家庭』『健康』『陪伴』『懷舊』等關鍵詞的偏好，定向推送內容，強化情感依賴。」中國消費者協會發布的報告顯示，「一些短視頻平台利用算法鎖定老年人推送離奇、浮誇『微短劇』，然後再以極低價格誘導其繼續觀看並默認開通免密支付，隨後按集扣費並自動播放。」