[心得] 用Cloudflare Worker AI 隨機畫桌布

看板MobileComm (行動通訊)作者yuzuki時間6小時前 (2026/02/13 01:54)推噓2(2推 0噓 0→)

留言2則, 2人參與討論串1/1

一時興起，搞了一個多禮拜的實驗事情是這樣，最近發現三星手機有AI繪製桌布和AI天氣效果的功能，但實際用了之後還是覺得這跟我想得有點差，前者可以根據指定主題AI繪圖，後者可以在已有照片上加上AI天氣效果但我要的是可以根據現在天氣隨機繪製一張，而且會定時更新研究了一下發現利用API繪圖應該是可行的辦法，但大部分API都要錢，如果一小時畫一張一天大概也要幾十元台幣，不是很貴但也不太值得後來就注意到cloudflar有每天免費額度，對於我這種需求正好，但實際執行還是費了不少勁，主要問題不是隨機畫圖，而是如何讓手機定時執行這個程序，這片就是稍微分享一下我用的醜陋辦法我會分享範例文件，歡迎各位指教 https://drive.google.com/drive/folders/1CW5EzsOymc8rPa-wCrtKuGS29z9HPmV1 需要申請： Cloudflare 帳號 openweathermap 帳號 A.cloudflare 帳號這目標是拿到帳號ID和AI token 帳號ID是my dashbord的網址中 https://dash.cloudflare.com/ 帳號ID /home/domains token大概用下面方式取得 https://i.meee.com.tw/82Z4f5W.jpg

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2.openweathermap 目標是拿到API 大概像這樣 https://i.meee.com.tw/BHghsP5.jpg

B.關鍵字繪圖這裡準備了一個python腳本，其中關鍵字產生長這樣 https://i.meee.com.tw/SUBkw28.png

原理是先利用現代位置傳給API，API回傳現在天氣，日出日落時間然後根據不同天氣，從一大串關鍵字中選幾個，加上天氣描述和日夜描述，當作繪圖的基底當然有這些關鍵字就能畫圖，但我決定複雜點，將剛才的關鍵字扔進LLM模型，請AI模型幫我產生更清楚的描述 https://i.meee.com.tw/ZRGU8s4.png

產生關鍵字的promt可以自行修改，但我建議留著promt only等補述，否則LLM會產生諸如"好美妙的組合..."等等的廢話擴展的關鍵字可以傳入繪圖AI，也可以加入negative promt。其中最重要的一步是決定影像大小這裡有所限制，影像的寬高需要是256的倍數，最大是2048，建議從中選一個最接近螢幕長寬比的組合 https://i.meee.com.tw/fveTaFV.png

然後回傳的影像經由PIL套件存檔 C.設定termux temux是個終端機，我屆此在手機上執行python 在此須安裝 Termux Termux-API 不建議安裝play版，我是在FDROID上裝，或是在git上裝，但兩者來源需相同安裝好兩者之後要安裝套件，在termux鍵入 pkg update && upgrade pkg install termux-api pkg install jq pkg install python pkg install libjpeg-turbo pkg install libpng pip install pillow pip install requests termux-storage-setup 然後給予termux存取檔案權限 ternux-location 這時候會跳出給termux-api 位置權限，記得要選"永遠允許"而非"應用程式使用時"，否則背景會抓不到位置再試一次 termux-location -r last 這時應該要跳出目前位置安裝好後我們把範例檔中的 api.json AI_wallpaper.py AI_wallpaper.sh放入Pictures底下的AI_wallpaper資料夾 api.json裡要填入剛才申請到的token和API 然後termux鍵入 mkdir ~/AI_wallpaper/ cp /storage/emulated/0/Pictures/AI_wallpaper/AI_wallpaper.sh ~/AI-wallpaper/ chmod +x ~/AI-wallpaper/AI_wallpaper.sh 上面三步是創建資料夾，把AI_wallpaper.sh搬過去，給予執行權限現在可以執行看看 ~/AI-wallpaper/AI_wallpaper.sh 應該可以順利看到產生一張圖和一個log在 Picture/AI_wallpaper資料夾並被設定成桌面如果可以執行，那鍵入 termux-job-scheduler \ --script /data/data/com.termux/files/home/AI_wallpaper/AI_wallpaper.sh \ --period-ms 3600000 \ --persisted true \ --battery-not-low true 這樣就可以設定定期一小時執行 D.摺疊機個人是用折疊機，但上述程序有點麻煩，因為系統只讓我設定現在這個螢幕的桌布，不能設定沒開的另一個螢幕桌布這裡利用 termux-sensor -s "hinge_angle Wakeup" -n 1 找到一個叫做"hinge_angle Wakeup"感測器，這個感測器折起來時輸出0，反之為180，我把這個參數輸入python產生不同比例的圖片並設為桌布我把範例檔附上，但我不敢保這這個感測器的名稱在其他摺疊機能不能用 E.結果 keywords: railway, lake, mountain, ocean, Dusk, clear sky Prompt: A railway track winds its way along the shores of a serene lake, surrounded by towering mountains that reflect perfectly in the calm waters at dusk. In the distance, the ocean stretches out to the horizon, where the sky is painted with hues of pink and orange, gradating into a brilliant blue. The atmosphere is tranquil, with a few wispy clouds scattered across the clear sky, adding a touch of softness to the scene. https://i.meee.com.tw/XgIsnFA.jpg

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keywords: city, island, coastline, outdoor, Dusk, clear sky Prompt: A serene coastal cityscape at dusk, with the sun dipping into the horizon, casting a warm orange glow across the tranquil waters of the ocean. The sky above is a brilliant blue, with a few wispy clouds scattered across the canvas, their silhouettes outlined against the vibrant hues of the setting sun. The city's skyline is a blend of modern and vintage architecture, with sleek skyscrapers and charming beachside bungalows, all bathed in the soft golden light of dusk. The coastline is dotted with elegant lamp posts, their soft glow illuminating the winding promenade that stretches along the shore. In the distance, the outline of a small island can be seen, its rugged silhouette a striking contrast to the calm waters. The atmosphere is peaceful, with the sound of gentle waves and the distant hum of city life providing a soothing background melody. https://i.meee.com.tw/xlzeuD5.jpg

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keyword: coastline, island, city, ocean, Night, clear sky Prompt: A serene coastal city on a tropical island at night, with a crystal-clear sky displaying a million twinkling stars. The city's skyline is dominated by a majestic lighthouse standing tall on a rocky outcropping, its beam cutting through the darkness. In the distance, the ocean waves gently lap against the shore, creating a soothing melody. The city's buildings are a mix of modern and colonial architecture, with brightly lit windows and streets bustling with nocturnal activity. A few sailboats are moored in the harbor, their sails billowing in the gentle breeze. The air is filled with the sweet scent of blooming flowers and the distant tang of saltwater, as the city's residents go about their evening routines under the celestial showcase above. https://i.meee.com.tw/3ws362Q.jpg

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橫屏狀況 keyword: outdoor, ocean, railway, traffic, Night, clear sky Prompt: A serene night scene of a coastal railway track overlooking the vast ocean, with no traffic in sight. The clear sky above is filled with a million twinkling stars, and the only sound is the distant hum of a passenger train making its way along the tracks, its lights casting a warm glow on the dark sand below. https://i.meee.com.tw/fmWbnzU.jpg

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心得和建議： 1. 整個python程式因為有AI幫忙，算是單純很多，但就是搞termux和android權限等等搞了好久，之前是過termux+macrodroid，但就是搞不定，最後還是會到termux+termux-api 2. Stable deffusion模型在細節上差強人意，如果要更好的細節，cloudflare有提供lucid phonix等，但一張大概就會耗掉一天免費額度，雖說如此，我有次真的用超過很多，但有就是一個提醒，沒有禁止我繼續用，隔天額度又恢復 3. Stable deffusion有時也會產生很多不合理的東西，樹讓的人，水裡的車，斷掉路和鐵軌等，而且圖越大越容易出現不合理的元素重複，lucid會好很多 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 36.228.93.245 (臺灣) ※ 文章網址: https://www.ptt.cc/bbs/MobileComm/M.1770918886.A.318.html

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NX9999

02/13 02:22, 6小時前 , 1^F

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02/13 04:04, 4小時前 , 2^F

02/13 04:04, 2^F

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