數學在工作上的實際應用? - 工程師

By Barb Cronin
at 2019-03-02T01:50
at 2019-03-02T01:50
Table of Contents
※ 引述《qmqmqm ()》之銘言:
: 從簡單的開始就好
: 代數, 排列組合, 費氏定理, 證明, 幾何, 三角, 根號, 微積分, 無窮
: 各位真的在分析決策工作上有實際應用到這些嗎?
: 還是用著人家弄好的GUI操作講故事, 最後看官位決定?
: 又, 證明這件事個人覺得很實用, 但有多少人適用這種推倒演繹概念進行討論
: 而不是講話大聲, 或至少來個貝氏的概念, 而不是以口水批鬥桶人來引導決策方向?
: 想探知真正用科學方式做事的比例與情況~
數學....工作十年來,印象用比較深刻的一次
那是我剛退伍進第一間公司的時候,公司做螢幕校正器
就是進來一塊面板組裝好後或是使用一段時間後,表面上看起來都白色的畫面
實際上每個角落、區塊跟中間的亮度是不一樣的
所以要校正,把一塊 1080p 的面板用大概 8x8 像素去拆成二維陣列
在每個陣列方塊內填入補償值,讓 FPGA 控制每一小區域的亮度跟中間一樣
問題來了,一個感測鏡頭把每塊 8x8 都量測的話要測三萬次,不可能這麼做..
還好亮度的趨勢是連續的,如果中間亮、左上角暗會由中間到左上角遞減
不會中間亮、左上角普通亮但左上區塊中間這段超暗或超亮
因此,流程上就可以量四個角落跟中間,再用數學計算,只要感測五次即可
1.先量完四個角跟中間,再用三角函數算出上、下、左、右水平位置的值
2.用內插法把中間到四個角落以及四個角落之間每個區塊亮度補償算出來
當時我也不知道正確做法是什麼,用這方法寫了校正演算法後丟給工廠試
結果工廠覺得 OK 就用了....現在還是覺得有點對不起螢幕買家
--
: 從簡單的開始就好
: 代數, 排列組合, 費氏定理, 證明, 幾何, 三角, 根號, 微積分, 無窮
: 各位真的在分析決策工作上有實際應用到這些嗎?
: 還是用著人家弄好的GUI操作講故事, 最後看官位決定?
: 又, 證明這件事個人覺得很實用, 但有多少人適用這種推倒演繹概念進行討論
: 而不是講話大聲, 或至少來個貝氏的概念, 而不是以口水批鬥桶人來引導決策方向?
: 想探知真正用科學方式做事的比例與情況~
數學....工作十年來,印象用比較深刻的一次
那是我剛退伍進第一間公司的時候,公司做螢幕校正器
就是進來一塊面板組裝好後或是使用一段時間後,表面上看起來都白色的畫面
實際上每個角落、區塊跟中間的亮度是不一樣的
所以要校正,把一塊 1080p 的面板用大概 8x8 像素去拆成二維陣列
在每個陣列方塊內填入補償值,讓 FPGA 控制每一小區域的亮度跟中間一樣
問題來了,一個感測鏡頭把每塊 8x8 都量測的話要測三萬次,不可能這麼做..
還好亮度的趨勢是連續的,如果中間亮、左上角暗會由中間到左上角遞減
不會中間亮、左上角普通亮但左上區塊中間這段超暗或超亮
因此,流程上就可以量四個角落跟中間,再用數學計算,只要感測五次即可
1.先量完四個角跟中間,再用三角函數算出上、下、左、右水平位置的值
2.用內插法把中間到四個角落以及四個角落之間每個區塊亮度補償算出來
當時我也不知道正確做法是什麼,用這方法寫了校正演算法後丟給工廠試
結果工廠覺得 OK 就用了....現在還是覺得有點對不起螢幕買家
--
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