TWI289993B - Adaptive pixel-based blending method and system - Google Patents
Adaptive pixel-based blending method and system Download PDFInfo
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Description
1289993 五、發明說明(1) 一、 【發明所屬之技術領域】 本發明係有關於影像或圖像的重疊方法與系統,特別 是關於調整多個影像或圖像〉昆色比例之重疊方法與系統。 二、 【先前技術】 在動態影像畫面顯示上’通常用於整合與顯示影像與 圖像的方法,分別為單圖幅缓衝區架構(single frame buffer architecture)與雙圖幅緩衝區架構(duai frame buffer architecture)。其中,在雙圖幅緩衝區架構上決 定顯示影像或圖像二者之一的作法,係為在圖像子系統上 以個別像素一個接一個來決定,一般係以一特定顏色或以 查詢色彩對照表(l00kup table)之—特定顏色項(;〇1〇; HI : T式找出所謂關鍵色度(Chr〇ma —_),而另 :Πί;做所謂的黑色们則’即利用黑色最容易被偵測 而將黑色也視為某種關鍵色度。這兩箱祚本 將圖像像素視為透==(如關鍵色度或黑色)時, 像與圖像重4顯_ :讓衫像顯⑨。第-圖係-習知之影 像11 0所構成,\^不思圖,顯不畫面15 0係由影像1 〇 0與圖 示畫面15〇ί之;中影像100與圖像110係各自將相對於顯 達’而在圖像j二位置的!素’在同-時間内逐-送 圖像像素流该、去々有一重疊區域12〇以關鍵色度填滿,在 夕工器1 30過程中,以一偵測器丨4〇檢查有 1289993 五、發明說明(2) 無關鍵色度,當錢到時,則多工器13Qit# 像素輸出,反之以圖像110的像素輸出。 以影像1 0 0的 根據上述的 像與圖像以某一 (transparency 塊之像素輸出皆 之紅綠藍色值就 疋比例的混色, 度透明度混色, 時,上述重疊顯 方法雖可讓影像重疊在圖像上,或是將影 比例做混合達到具有透明度混色 mix/b lend)的效果,例如,當某一特定區 以固定1/4紅綠藍色值影像及加上3/4圖像 月匕產生重$或半透明效果,但是,這種固 例如希望能將重疊區域以多個各種不同程 或做到由糢糊逐漸清楚的淡入淡出等效果 示方式便限制了應用彈性,並且先前技術 多限於將-圖像與m圖像重疊在一畫面上 ΛΑ Jlfl -Jt—办 ^ " 面的來源有多個 的方式,在動態 圖像或影像時,直接覆蓋或固定混色比例 影像的應用彈性稍嫌不足。 三 發明内容 本發明提供一種以像素為基礎的可調式混色方法,首 先依據複數個輸入訊號分別取得相對應之一像素與一可調 整之混色比例;以及依據一混色法以產生一輸出像素。 本發明再提供一種以像素為基礎的可調式混色系統, 包括·一像素與混合比例產生器,係用以根據複數個輸入 訊號分別產生相對應之一像素與一混合比例;以及一混合
第5頁 1289993 五、發明說明(3) 裔,係用以依據一混色法以及複數個像素與混合比例產生 一輸出像素。 本發明另提供一種影像處理晶片,包括··一混合比例 產^模組’係用以根據複數個輸入訊號分別產生相對應之 】2個Γ*σ,例,以及一混合器,係用以依據複數個來源 象素以及此複數個混合比例產生一輸出像素。 藉由本發明之以像素為基礎的可調式混色方法盥系 之多加多個輸入影像與圖像重疊顯示之彈性與應用 四 實施方式 細描ir月例會詳細描述如下。然而,除了詳 本發明的範圍;受;施例施行,且 工為提供更清楚的描述: ^並沒有依照其相對尺寸繪圖,某^圖不内各 2比已經被誇張,·不相關之細節部;也未::::關尺 求圖示的簡潔。 刀仏禾凡全繪出,以 ,二圖為本發明之以像 較佳貫施例…,如步物。所示,依 第6頁 1289993 五、發明說明(4) 中的每一個,分別取得相對應之一像素與一可調整之混色 比例’其中若輸入訊號為間接色彩之像素索引值時,各像 素可以查表方式產生,例如以此像素索引值對應到可程式 化麦更内今之一對照表之一相對應顏色項,以取得相對應 =像素,然後可根據像素值之一部份位元組成此可調整之 混合比例。其次,步驟22〇係依據一混色法以產生一輸出 ,素,其中此輪出像素係以一混色法依各個訊號之像素與 ^合比例來產生。例如訊號A、B與C分別產生像素1、像^ 广像素3,*中每-像素是由-紅色值(R)、-綠色值⑹ ^ 一監色值(B)所組成,或者是由一亮度值(γ)與一彩度值 所組成,例如(紅色值,綠色值,藍色值)分別為(5〇, ^ 、(1〇〇,1〇〇,1〇〇)與(2〇〇,200,2 00 ),並且其混合比例 2別為2 0 0%、100%與25%,則以混色比例分別乘以各像素 H得到的混色值分別為( 1 0 0,1 00,1 0 0 )、( 1 0 0,1 0 0,1 0 0 ) /、( 〇, 50, 5 0 ),加總後得到一輸出像素為 (250,250,25田0)。在此一提,各混色值應該在一範圍内, 不大於一最大色值,並且輸出像素也不大於此最大色 多佶會有溢值(〇Verfl〇W)的情形發生。其中,此最大 此像素之最大值,如在256色環境下,顏色範 [si的# i 所以此最大色值為25 5。若此像素由許多不 都石i ί值所組成’則所有混色值與所產生的輸出像素值 !=1匕輸出像素值之最大色值,例如輸出像素之輸出 31盥j、輸出綠色值與輸出藍色值之最大色值分別為63、 ^ ,則所有訊號之像素與混合比例所產生各個混色值
之紅色值、綠色值與藍色值分別不大於63、31與63,並且 各個混色值加總後所產生之輸出像素之紅色值、'綠色值與 藍色值亦分別不大於63、31與63。 ’、 此外,透過動態變更顏色項内容,可以讓不同訊號之 内容所產生的之像素色彩相同,混合比例卻不同;也可以 是訊號内容不變,動態調整混合比例來達到特殊顯示效 果。例如,當某一訊號之内容為A、B、C、D與E時,經4查 表對應後產生之像素皆為色彩1,但是混合比例分別為混 合比例100%、75%、50%、25%與0%,如此就能將此訊號所 產生之像素在不同時間呈現出以色彩1逐漸變淡,最後消 失的視覺效果。 因此’母個訊號來源僅單純地傳送與像素相關之訊號 内容,不同混合比例之相同像素以不同訊號内容來傳送, 如此就不需同時傳送像素與混合之資訊,在訊號來源方面 就可省下大量的儲存與傳輸成本。例如,在一1〇24χ768的 畫面上,如果每一像素相關之混合比例需以8位元來表 不,每一晝面就需6, 291,456個位元,在每秒3〇個畫面的 顯示上,將會是很大的成本。 第三A圖係本發明之一種以像素為基礎的混色系統示 思圖-較佳實施例,包括一像素與混 產生器3〇〇, 係用以根據複數個輸入訊號產生與各 1289993 五、發明說明(6) 像素與一混合比例;以及一混合器340,係用以依據一混 色法以及這些像素與混合比例以產生一輸出像素。第三B 圖係本發明之一種以像素為基礎的混色系統示意圖另一較 佳實施例,其中此像素與混合比例產生器3 〇 〇尚可包括多 個可程式化之對照表31 01至31 0N,係用以根據各輸入訊號 對應到一對照表之一顏色項,以輸出相對應之像素;以及 尚可包括多個混合比例產生器3 2 0 1至3 2 0 N,每一個混合比 例產生器係用以接收一輸入訊號,以產生相對應之混舍比 例。本實施例之混色方法及其相關細節皆與前一實施例相 同,故在此不再贅述。
第四圖係本發明之一種影像處理晶片之一較佳實施 例,包括·· 一混合比例產生模組42 0,係用以根據複數個 f入訊號分別產生相對應之複數個混合比例;以及一混合 裔440 ’係用以依據複數個來源像素以及複數個混合比例 f生二輸出像素。其中,此混合比例產生模組42〇可包括 f =混合比例產生器420 1至420N,並且此影像處理晶片尚 Z ^括—圖幅緩衝器400以及一對照表模組410,此圖幅緩 ^态巧〇係用以儲存此複數個來源影像/圖像之像素,並且 I 、複數個輸入訊號至混合比例產生模組4 2 0 ;此對昭表 」’尚可包括複數個對照表4 101至41 0N,盆中备一 掏取^、表係用以儲存複數個顏色項以供此複數個輸入訊號 ° 並且每一顏色項之内容皆為像素。
1289993
五、發明說明(7) 舉例來說’第五圖係用以說明依本發 ,混色方法與裝置’其中當多•(本例為三個)象= 號^為間接色彩之像素索引值日夺,分別可藉由各像^索^ 值所對應到的一個對照表顏色項取得像素丨、像素2、像 3,例如分別可得到以RGB表示的像素值(5〇,5〇,5〇)、-(100,100,100)與(20 0,20 0,200),並且尚可藉由各像素值 之一部份位元以組成各個可調整之混合比例α1、α 2、^ 3,例如由像素1、像素2、像素3各最低一位元所組成之值 分別為0 0 1、11 1、1 0 0,然後分別可對應至各別的混合比 例(α 1,α 2,α 3 ) = ( 20 0%,1 00〇/〇,5 0% ),則輸出像 素可藉由在一混合器中加總各像素值與相對應混合比例之 乘積而產生,例如 (50*200%+100*100%+200*25%,50*200%+100*100%+200*25 0/〇, 5 0*20 0% + 1 00* 1 0 0% + 20 0*25〇/〇 ) = ( 250, 250, 250 )。
第10頁 1289993_ 圖式簡單說明 第一圖係一習知之影像與圖像重疊顯示示意圖; 第二圖係本發明之以像素為基礎的可調式混色方法一較 佳實施例; 第三A圖係本發明之一種以像素為基礎的混色系統示意 圖一較佳實施例; 第三B圖係本發明之一種以像素為基礎的混色系統示意 圖另一較佳實施例; 第四圖係本發明之一種影像處理晶片之一較佳實施例; 以及 第五圖係用以說明依本發明之以像素為基礎的混色方法 與裝置。 主要部分之代表符號: 100 影 像 110 圖 像 120 重 疊 區域 130 多 工 器 140 偵 測 器
第11頁 1289993_ 圖式簡單說明 1 5 0 ··顯示畫面 3 〇 〇 :像素與混合比例產生器 3 1 0 1〜3 1 Ο N、41 0 1〜4 1 Ο N :可程式化之對照表 320 1〜320N、420 1〜420N :混合比例產生器 340、440 :混合器 400 圖幅緩衝器 410 對照表模組 420 混合比例產生模組
第12頁
Claims (1)
1289993 案號 93Π409Ε P cyVf賴知正替频 修正 六、申請專利範圍 1 . 一種以像素為基礎的混色方法,包括: v 依據一複數個輸入訊號,分別取得相對應之一像素與一 可調整之混色比例,其中該可調整之混色比例係根據該像 素之一部分位元所產生.;以及 依據一混色法以產生一輸出像素。 2 .如申請專利範圍第1項之以像素為基礎的混色方法,其 中該混色法包括: 以相對應之該像素與該可調整之混色比例之乘積,作為 一混色值;以及 計算該些混色值之總和。 3. 如申請專利範圍第2項之以像素為基礎的混色方法,其 中各該混色值係不大於一最大色值,並且該輸出像素亦不 大於該最大色值。 4. 如申請專利範圍第1項之以像素為基礎的混色方法,包 括: 依據該複數個輸入訊號查表,以產生相對應之該像素; 以及 根據該像素之一部份位元產生該可調整之混色比例。 5. 如申請專利範圍第4項之以像素為基礎的混色方法,包 括·· 以該複數個輸入訊號分別對應到一可程式化變更内容之
第13頁 1289993 ^ ίϋ:: 一 六 對 該 .......'"•-v-- -,·.·.. I 像2之相對應顏色項,其中該相對應顏色項之内容係 如申請專利範圍第4項之以像素為基礎的混色方法,包 據族像素之該部份位元組成該可調整混色比例。 •種以像素為基礎的混色系統,包括: 產:合比例產生器,係用以根據複數個輪入訊號 ί丨甘ί 訊號相對應之複數個像素與複數個混合比 例,八中该混合比例係根據該像素之一部分位元所產生; 以及 一混合器,係用以依據一混多、、表 、— , 巴法以及該複數個像素與該 歿數個混合比例產生一輸出像素。 8·如申請專利範圍第7項之以像♦盘Α滋从、β 4 / 冬束為基礎的混色系統,盆 中該混合器係用以將該複數個像去命兮$去^ Α m京與该稷數個混合比例之 積所產生之此色值加總’以產生該輸出像素。 9·如申請專利範圍第7項之以像专立直邊从'、θ v / 界l為基礎的混色系統,該 像素與混合比例產生器包括: 一複數個可程式化之對照表,你田 係用以根據各該稷數個輪 入訊號對應到該對照表之一顏色Jg ” ^ # 。 巴項,以輸出相對應之該像 系0 t 10·如申請專利範圍第7項之以像夸盔盆邊μ ρ 1豕京為基礎的混色系統,該
1289993 六、申請專利範圍
|像素與混合比例產生器包括: 一複數個混合比例產生器,每一該複數個混合比例產生 器係用以接收一該輸入訊號,以產生相對應之該混合比 丨例。 11 · 一種影像處理晶片,包括: 丨一混合比例產生模組,係用以根據一複數個輸入 別產生相對應之一複數個混合比例;以及 唬刀 一混合器,係用以依據一複數個來源像素以 |混合比例產生一輸出像素; 汉4歿數個 其中該混合比例係根據該來源像素之一部分位元所產生 &如申請專利範圍第u項之影像處理晶片, 一對照表模組,係包括複數個對昭表,1 表係用以儲存一複數個顏色項供該複:個該對照 t且如每由一該複數個顏色項之内容係該像辛『 ’ 113.如申請專利範圍第n項之影像處理晶、 丨比例產生模組係用以根據該像素 /、中該混合 |該混合比例。 °丨伤位元產生與調整 14i如闰申A請夸利範圍第11項之影像處理晶片,4k 圖‘緩衝器,係用以儲存複 匕括. 對應像素,並且提供該複數個輸入源影像/圖像之相 第15頁
1289993 六、申請專利範圍 1 5 .如申請專利範圍第1 2或1 4項之影像處理晶片,於間接 色彩模式時,該輸入訊號係該對照表之一索引值。
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