CN1697512A - 具图样识别单元的解交错装置及其方法 - Google Patents

具图样识别单元的解交错装置及其方法 Download PDF

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CN1697512A
CN1697512A CNA2004100445641A CN200410044564A CN1697512A CN 1697512 A CN1697512 A CN 1697512A CN A2004100445641 A CNA2004100445641 A CN A2004100445641A CN 200410044564 A CN200410044564 A CN 200410044564A CN 1697512 A CN1697512 A CN 1697512A
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CN100466714C (zh
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张芳甄
黄铃琇
黄俊尧
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Himax Technologies Ltd
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Himax Technologies Ltd
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Abstract

一种具图样识别单元的解交错装置及其方法，用以接收交错式图像并输出非交错图像。解交错装置包括第一解交错单元、第二解交错单元及图样识别单元。图样识别单元的接收交错式图像，并识别交错式图像是否具有显着水平图样，若是，则输出交错式图像至第一解交错单元，否则输出至第二解交错单元。第一解交错单元的使用与第二解交错单元不同的解交错方法。当第一解交错单元或第二解交错单元接收图样识别单元输出的交错式图像后，据以输出非交错图像。

Description

具图样识别单元的解交错装置及其方法
技术领域
本发明涉及一种解交错装置及其方法，且特别涉及一种具图样识别单元的解交错装置及其方法。
背景技术
一般的影片是以交错(interlace)方式拍摄并播放。以电视为例，其一个帧(frame)的播放是先播出奇数场(odd field)，再播出偶数场(even field)而完成。奇数场是为此帧的奇数的显示行所构成；而偶数场是为此帧的偶数的显示行所构成。
一般的电视的更新频率(refresh rate)的30Hz，也就是在一秒内播出30张帧。每张帧的分成奇数场与偶数场播出，故一秒内有60个场。
由于对图像品质的要求愈来愈高，而非交错式(non-interlaced)，亦称为交错式(progressive)，图像的品质比交错式图像的品质为佳，因此一般较先进的图像播放装置皆具有渐进式播放的功能，例如是高分辨率电视(HighDefinition TV，HDTV)等等。
若欲将交错式图像以非交错式播放，需将交错式帧进行解交错(de-interlace)后，再以一个完整的帧一次播出。图1AS是交错式图像示意图，包括第n-1、第n及第n+1个场。在图1A中仅以x坐标为(i-1)-(i+1)，y坐标为(j-1)-(j+1)的像素为例做说明。交错式图像的每个场仅包括奇数或偶数的显示水平行，因此每个场仅有奇数或偶数的水平行的像素具有有效值，打X表示此像素在此场没有有效的亮度值。将交错式图像进行解交错即是将每个场中没有有效亮度值的像素填入适当的亮度值，以时间性平均法为例，像素(i，j)在非交错式的第n个帧的亮度值可以是交错式图像的像素(i，j)在第n-1及第n+1个场的亮度值的平均值。依照上述方法，所得到的非交错式图像的第n个帧如图1B所示。
然而，上述的解交错方法容易造成图像显示错误的问题，因为交错式图像的两个场实是为不同时间所拍摄，必须再进一步处理图像方能提升图像品质。
发明内容
有鉴于此，本发明的目的就是在提供一种提升图像品质的解交错装置及其方法。
根据本发明的目的，提出一种解交错装置，用以接收交错式图像并输出非交错图像。装置包括第一解交错单元、第二解交错单元及图样识别单元。图样识别单元是接收交错式图像，并识别交错式图像是否具有显着水平图样，若是，则输出交错式图像至第一解交错单元，否则输出至第二解交错单元。第一解交错单元是使用与第二解交错单元不同的解交错方法。当第一解交错单元或第二解交错单元接收图样识别单元输出的交错式图像后，据以输出非交错图像。
根据本发明的另一目的，提出一种解交错方法，用以将交错式图像转换为非交错式图像。首先，接收交错式图像的场，场至少包括第一水平行与第二水平行。接着，识别场是否具有显着水平图样：检查第一水平行与第二水平行的垂直差异程度，并检查各第一水平行及第二水平行的水平差异程度。若垂直差异程度够大，且水平差异程度不大，则场是具有显着水平图样，以一第一方法将该场解交错；否则以第二方法将场解交错。
为让本发明的上述目的、特征、和优点能更明显易懂，下文特举一较佳实施例，并配合附图，作详细说明如下。
附图说明
图1A是交错式图像示意图。
图1B是非交错式图像的第n个帧。
图2A是具有复杂变化的图样。
图2B是具有水平变化的图样。
图3示出了依照本发明一较佳实施例的一种解交错装置方块图。
图4是场f示意图。
图5是依照本发明的实施例的显着水平图样的识别方法流程图。
图6A是依照本发明的实施例的第一种渐层水平图样的识别方法流程图。
图6B是依照本发明的实施例的第二种渐层水平图样的识别方法流程图。
图6C是依照本发明的实施例的第三种渐层水平图样的识别方法流程图。
图6D是依照本发明的实施例的第四种渐层水平图样的识别方法流程图。
图7示出了依照本发明另一较佳实施例的一种解交错装置方块图。
图8示出了依照本发明另一较佳实施例的一种解交错装置方块图。
图9示出了依照本发明另一较佳实施例的一种解交错装置方块图。
附图符号说明
300、700、800、900：解交错装置
310、710、810、910：图样识别单元
320、720、820、920：第一解交错单元
330、730、830、930：第二解交错单元
740：选择单元
具体实施方式
一般的帧是可以分为具有复杂变化的图样或具有水平变化的图样。若需解交错如此的帧，上述两种图样分别适用不同的解交错方法。但是，一般的解交错装置仅使用同一种解交错方式，使得图像品质不佳。
水平变化图样又可分为显着水平及渐层水平。图2A是显着水平图样，图2B是渐层水平图样。此两种图样应采用特别的解交错方法，以得到良好的图像品质，然而一般作法则不论图样种类，均采同一种方式的方法，例如ELA(Edge based Line Average)算法，如此将不容易达成良好的图像品质。
请参照图3，其示出了依照本发明一较佳实施例的一种解交错装置方块图。解交错装置300包括图样识别单元310、第一解交错单元320及第二解交错单元330。图样识别单元310是接收场f，也就是一交错式图像。若图样识别单元310识别出场f具有如第2A或2B图所示的水平图样则交由第一解交错单元320处理，否则交由第二解交错单元330处理。交由第一解交错单元320处理的水平图样包括两种：显着水平图样是垂直变化大但水平变化小；渐层水平图样是邻近二水平行互呈反向渐层变化(gradually change)。
其中，当第一解交错单元320接收图样识别单元310输出的场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。当第二解交错单元330接收图样识别单元310输出的场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。该第一解交错单元320是使用与该第二解交错单元330不同的解交错方法。
应注意的是，图样识别单元310所接收的场f，亦可仅为场f中的一部份像素，只要能供识别该水平图样即可，并未限定为全部的场f。
因此，本发明更提出一种解交错方法，依据场f的像素数据，并产生对应的解交错图像或对应的解交错像素数据，该方法包括识别场f的像素数据是否具有水平图样，若场f的像素数据具有水平图样则以第一解交错方法将场f的像素数据解交错以产生对应的解交错图像或对应的解交错像素数据，否则以第二解交错方法将场f的像素数据解交错以产生对应的解交错图像或对应的解交错像素数据。其中，第一解交错方法与第二解交错方法不同。其中，识别场f的像素数据是否具有水平图样的方法如图4、图5以及图6A至图6D的说明。
图4是场f示意图。在本实施例中，场f包括第j条水平行的A1-A5的像素，及第j+2条水平行的B1-B5的像素，其中，第j+1条水平行并未包括在场f中，所以未示出。图5是依照本发明的实施例的显着水平图样的识别方法流程图。首先，计算上下方向的垂直差异，如步骤510-540。接着，计算水平方向的水平差异，如步骤550-560所示。最后，依据垂直差异及水平差异而决定此场f是否具有显着水平图样(步骤570)：若垂直差异大，且水平差异不大，则此场f是具有显着水平图样。
在计算上下方向的垂直差异的步骤中，先计算此场f中所有像素的亮度平均值M(步骤510)，也就是像素A1-A5及B1-B5的亮度值的平均。
接着，依据平均值M将各亮度值量化以求得各像素的量化值g(步骤520)。若像素的亮度值大于亮度平均值M与门坎值T1之和，则此像素的量化值g为1。若像素的亮度值小于亮度平均值M减去门坎值T1的差值，则此像素的量化值g为-1。否则此像素的量化值为0。举例来说，若这些像素的平均值M为50，门坎值T1为20，则亮度值大于70的像素的量化值g为1；亮度值小于30的像素的量化值g为-1；亮度值介于30-70之间的像素的量化值g为0。
再来，求得上下像素的量化差dg(步骤530)。也就是分别求像素A1与B1的量化值g的差dg1，像素A2与B2的量化值g的差dg2，...及像素A5与B5的量化值g的差dg5。然后将此些量化差dg1-dg5加总以求得垂直差值V1(步骤540)。垂直差值V1即代表上下两行像素的垂直差异程度。
在计算水平差异时，是先求得各像素与水平相邻像素的一阶差值并据以求二阶差值(步骤550)。求一阶差值时，是计算像素A1与A2的亮度差值，以求得一阶差值d12、像素A2与A3的亮度差值，以求得一阶差值d23、像素A3与A4的亮度差值，以求得一阶差值d34、像素A4与A5的亮度差值，以求得一阶差值d45，及像素B1-B5间的一阶差值e12、e23、e34及e45。再来，依据一阶差值而计算二阶差值：二阶差值D1是一阶差值d12与d23的差，D2是一阶差值d23与d34的差，D3是一阶差值d34与d45的差，同理可求得像素B1到B5间的二阶差值E1、E2及E3。然后，将这些二阶差值加总后得水平差值V2。水平差值V2即代表场f的水平差异程度。
在步骤570中，依据垂直差值V1及水平差值V2决定场f是否具有显着水平图样：若垂直差异大，且水平差异不大，则此场f是具有显着水平图样。本实施例的作法是将垂直差值V1乘上一预定值后，减去水平差值V2，若结果大于零，表示是显着水平图样。在本实施例中，此预定值是选自于3.8～4.2区间。若此场f是具有显着水平图样，则交由第一解交错单元320处理，否则继续进行渐层水平图样的识别。
图6A是依照本发明的实施例的第一种渐层水平图样的识别方法流程图。需同时三个条件具足方为渐层水平图样。第一个条件包括两个子条件，分别示于步骤610及620中，若两个子条件之一成立，则第一条件成立。在步骤610中，检查像素从A1到A5的亮度是否为渐暗且像素从B1到B5的亮度为渐亮，若是表示第一个条件成立。在步骤620中，检查像素从A1到A5的亮度是否为渐亮且像素从B1到B5的亮度为渐暗，若是表示第一条件成立。若第一条件成立即继续执行步骤630以检查第二条件。
在步骤630中，检查是否水平的变化不大。检查的方法是求取水平相邻像素的一阶差距的绝对值，所有相邻像素间的亮度差值的绝对值皆要小于一门坎值T2，若是表示第二个条件成立，也就是水平变化不大，继续执行步骤640以检查第三个条件。门坎值T2约为30-50之间。
在步骤640中，检查像素A1与A5的亮度差值，及像素B1与B5的亮度差值，两者的绝对值皆要大于门坎值T3，第三条件方才成立。门坎值T3约为8-12。第二个条件是要检查水平方向是为渐进变化，第三个条件是要检查最大亮度差异值要够大。若第三个条件亦成立，则此场f具有渐层水平图样(步骤650)所示。
图6B是依照本发明的实施例的第二种渐层水平图样的识别方法流程图，仅需满足第一个条件与第二个条件，亦即前述步骤610或620检查第一个条件成立，以及前述步骤630检查第二个条件成立，则场f具有渐层水平图样(步骤650)。
图6C是依照本发明的实施例的第三种渐层水平图样的识别方法流程图，仅需满足第一个条件与第三个条件，亦即前述步骤610或620检查第一个条件成立，以及前述步骤640检查第三个条件成立，则场f具有渐层水平图样(步骤650)。
图6D是依照本发明的实施例的第四种渐层水平图样的识别方法流程图，仅需满足第一个条件，亦即前述步骤610或620检查第一个条件成立，则场f具有渐层水平图样(步骤650)。
当图样识别单元310识别出显着水平图样或渐层水平图样，则将此场f交由第一解交错单元320处理，否则交由第二解交错单元330处理。
请参照图7，其示出了依照本发明另一实施例的一种解交错装置方块图。解交错装置700包括图样识别单元710、第一解交错单元720、第二解交错单元730及选择单元740。图样识别单元710、第一解交错单元720及第二解交错单元730均接收场f，也就是一交错式图像。第一解交错单元720及第二解交错单元730均对场f做解交错处理。当图样识别单元710识别出场f具有如第2A或2B图所示的水平图样时，图样识别单元710则通知选择单元740选择第一解交错单元720输出的图像数据作为选择单元740输出的图像数据F，否则选择第二解交错单元730输出的图像作为选择单元740输出的图像F。而通知的方式是由图样识别单元710发出一选择信号给选择单元740，或由选择单元740检查或询问图样识别单元710标示状态值(register value)而得知，但并未限定此些方式。换句话说，选择单元740依据图样识别单元710的识别结果选择第一解交错单元720输出的图像作为选择单元740输出的图像F，或选择第二解交错单元730输出的图像作为选择单元740输出的图像F。
其中，第一解交错单元720接收场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。第二解交错单元730接收场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。该第一解交错单元720是使用与该第二解交错单元730不同的解交错方法。
应注意的是，图样识别单元710所接收的场f，亦可仅为场f中的一部份像素，只要能供识别该水平图样即可，并未限定为全部的场f。而输出的图像数据F是可为解交错图像或对应的像素数据。
因此，本发明更提出一种解交错方法，依据场f的像素数据，并产生对应的解交错图像或对应的解交错像素数据，该方法包括识别场f的像素数据是否具有水平图样，以第一解交错方法将场f的像素数据解交错以产生第一图像数据，以第二解交错方法将场f的像素数据解交错以产生第二图像数据，依据识别步骤的结果选择第一图像数据或第二图像数据作为对应的解交错图像或对应的解交错像素数据。其中，第一解交错方法与第二解交错方法不同。其中，识别场f的像素数据是否具有水平图样的方法如图4、图5以及图6A至图6D的说明。
请参照图8，其示出了依照本发明另一实施例的一种解交错装置方块图。解交错装置800包括图样识别单元810、第一解交错单元820、第二解交错单元830及选择单元840。图样识别单元810、第一解交错单元820及第二解交错单元830均接收场f，也就是一交错式图像。第一解交错单元820及第二解交错单元830均对场f做解交错处理。当图样识别单元810识别出场f具有如第2A或2B图所示的水平图样时，图样识别单元810选择由第一解交错单元820输出图像F，否则由第二解交错单元830输出图像F，而选择的方式是由图样识别单元810发出一选择信号，或由第一解交错单元820与第二解交错单元830检查或询问图样识别单元810标示状态值(register value)而得知，但并未限定于此些方式。换句话说，第一解交错单元820与第二解交错单元830依据图样识别单元810的识别结果选择由第一解交错单元820与第二解交错单元830输出图像F。其中，第一解交错单元820与第二解交错单元830亦可不先对场f做解交错处理，待被选择后才对场f做解交错处理。
其中，第一解交错单元820接收场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。第二解交错单元830接收场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。该第一解交错单元820是使用与该第二解交错单元830不同的解交错方法。
应注意的是，图样识别单元810所接收的场f亦可仅为场f中的一部份像素，只要能供识别该水平图样即可，并未限定为全部的场f。而输出的图像数据F是可为对应的解交错图像或对应的解交错像素数据。
因此，本发明更提出一种解交错方法，依据场f的像素数据，并产生对应的解交错图像或对应的解交错像素数据，该方法包括识别场f的像素数据是否具有水平图样，以第一解交错方法将场f的像素数据解交错以产生第一图像数据，以第二解交错方法将场f的像素数据解交错以产生第二图像数据，依据识别步骤的结果选择第一图像数据或第二图像数据作为对应的解交错图像或对应的解交错像素数据。其中，第一解交错方法与第二解交错方法不同。
因此，当第一解交错单元820与第二解交错单元830不先对场f做解交错处理，待被选择后才对场f做解交错处理时，本发明更提出另一种解交错方法，依据场f的像素数据，并产生对应的解交错图像或对应的解交错像素数据，该方法包括识别场f的像素数据是否具有水平图样，若场f的像素数据具有水平图样则以第一解交错方法将场f的像素数据解交错以产生对应的解交错图像或对应的解交错像素数据，否则以第二解交错方法将场f的像素数据解交错以产生对应的解交错图像或对应的解交错像素数据。其中，第一解交错方法与第二解交错方法不同。
其中，识别场f的像素数据是否具有水平图样的方法如图4、图5以及图6A至图6D的说明。
请参照图9，其示出了依照本发明另一实施例的一种解交错装置方块图。解交错装置900包括图样识别单元910、第一解交错单元920及第二解交错单元930。第一解交错单元920及第二解交错单元930均接收场f，也就是一交错式图像，并对场f做解交错处理。图样识别单元910接收第一解交错单元920及第二解交错单元930输出的图像并识别第一解交错单元920输出的图像中所包括的场f的像素数据，当图样识别单元910识别出场f具有如第2A或2B图所示的水平图样时，图样识别单元910则选择第一解交错单元920输出的图像作为图样识别单元910输出的图像F，否则选择第二解交错单元930输出的图像作为图样识别单元910输出的图像F。
其中，第一解交错单元920接收场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。第二解交错单元930接收场f的像素数据后，据以产生对应的解交错图像或对应的解交错像素数据。该第一解交错单元920是使用与该第二解交错单元930不同的解交错方法。
应注意的是，图样识别单元910所接收的场f，亦可仅为场f中的一部份像素，只要能供识别该水平图样即可，并未限定为全部的场f。而输出的图像数据F是可为对应的解交错图像或对应的解交错像素数据。
因此，本发明更提出另一种解交错方法，依据场f的像素数据，并产生对应的解交错图像或对应的解交错像素数据，该方法包括以第一解交错方法将场f的像素数据解交错以产生第一图像数据，以第二解交错方法将场f的像素数据解交错以产生第二图像数据，接收第一图像数据与第二图像数据，识别第一图像数据与第二图像数据中所包括的场f的像素数据是否具有水平图样，以及依据识别结果，选择第一图像数据或第二图像数据作为对应的解交错图像或对应的解交错像素数据。其中，第一解交错方法与第二解交错方法不同。
其中，识别场f的像素数据是否具有水平图样的方法如图4、图5以及图6A至图6D的说明。
本发明上述实施例所揭露的具图样识别单元的解交错装置及其方法可以识别交错式图像的特性，并以适当的解交错方法处理，如此可以使得各种特性的交错式影样皆能以适当的解交错方法处理，以求取最佳的图像品质。
综上所述，虽然本发明已以一较佳实施例揭露如上，然其并非用以限定本发明，任何熟习此技艺者，在不脱离本发明的精神和范围内，当可作各种的更动与润饰，因此本发明的保护范围当视后附的申请专利范围所界定者为准。

Claims (31)

1.一种解交错装置，依据一交错式图像的一场中多个被选择像素的数据，并产生多个对应像素的数据，该装置包括：
一第一解交错单元；
一第二解交错单元，其中该第二解交错单元是使用与该第一解交错单元不同的解交错方法；以及
一图样识别单元，识别这些被选择像素的数据是否具有一特殊图样，若是，则输出这些被选择像素的数据至该第一解交错单元，否则输出这些被选择像素的数据至该第二解交错单元；
其中，该第一解交错单元接收该图样识别单元输出的这些被选择像素的数据后，据以产生这些对应像素的数据；
其中，该第二解交错单元接收该图样识别单元输出的这些被选择像素的数据后，据以产生这些对应像素的数据。
2.一种解交错装置，依据一交错式图像的一场中多个被选择像素的数据，并产生多个对应像素的数据，该装置包括：
一第一解交错单元；
一第二解交错单元，其中，该第二解交错单元是使用与该第一解交错单元不同的解交错方法；
一图样识别单元，其中，该图样识别单元识别这些被选择像素的数据是否具有一特殊图样；以及
一选择单元；
其中，该第一解交错单元依据这些被选择像素的数据，产生一第一图像数据至该选择单元；
其中，该第二解交错单元依据这些被选择像素的数据后，产生一第二图像数据至该选择单元；
其中，该选择单元依据该图样识别单元的识别结果选择该第一图像数据或该第二图像数据作为这些对应像素的数据。
3.一种解交错装置，依据一交错式图像的一场中多个被选择像素的数据，并产生多个对应像素的数据，该装置包括：
一第一解交错单元；
一第二解交错单元，其中该第二解交错单元是使用与该第一解交错单元不同的解交错方法；以及
一图样识别单元；
其中该图样识别单元识别这些被选择像素的数据是否具有一特殊图样，若是，则选择该第一解交错单元产生这些对应像素的数据，否则选择该第二解交错单元产生这些对应像素的数据。
4.一种解交错装置，依据一交错式图像的一场中多个被选择像素的数据，并产生多个对应像素的数据，该装置包括：
一第一解交错单元；
一第二解交错单元，其中该第二解交错单元是使用与该第一解交错单元不同的解交错方法；以及
一图样识别单元；
其中该第一解交错单元依据这些被选择像素的数据后，产生一第一图像数据；
其中该第二解交错单元依据这些被选择像素的数据后，产生一第二图像数据；
其中，该图样识别单元识别该第一图像数据是否具有一特殊图样，若是，则选择该第一图像数据作为这些对应像素的数据，否则选择该第二图像数据作为这些对应像素的数据。
5.一种解交错方法，依据一交错式图像的一场中多个被选择像素的数据，并产生多个对应像素的数据，该方法包括：
识别这些被选择像素的数据是否具有一特殊图样；
若这些被选择像素的数据具有该特殊图样，则以一第一解交错方法将这些被选择像素的数据解交错以产生这些对应像素的数据；以及
若这些被选择像素的数据不具有该特殊图样，则以一第二解交错方法将这些被选择像素的数据解交错以产生这些对应像素的数据；
其中，该第一解交错方法与该第二解交错方法不同。
6.如权利要求5所述的解交错方法，其中，这些被选择像素的数据是选自该交错式图像的该场中一第一水平行与一第二水平行。
7.如权利要求6所述的解交错方法，其中，这些被选择像素的数据是为这些被选择像素的亮度值；
其中该识别步骤依据这些被选择像素的亮度值求得一垂直差值及一水平差值，若该垂直差值乘上一预定值后大于该水平差值，则这些被选择像素的数据具有该特殊图样。
8.如权利要求7所述的解交错方法，其中，该第一水平行与该第二水平行是为相邻，且这些被选择像素是相对排列于该第一水平行与该第二水平行。
9.如权利要求7所述的解交错方法，其中，求得该垂直差值的步骤包括：
计算这些被选择像素的亮度值的一平均值；
依据这些被选择像素的亮度值与该平均值赋予各该被选择像素一量化值；
计算多个量化差，各该量化差是为垂直相对的各该被选择像素的该量化值的绝对差值；以及
依据这些量化差加总而得该垂直差值。
10.如权利要求7所述的解交错方法，其中，求得该水平差值的步骤包括：
据各该被选择像素与水平邻接像素间的亮度值的绝对差值得到多个一阶差值；
依据各该一阶差值求算多个二阶差值；
依据这些二阶差值加总而得该水平差值。
11.如权利要求6所述的解交错方法，其中，这些被选择像素的数据是这些被选择像素的亮度值；
其中，该识别步骤依据这些被选择像素的亮度值，检查这些被选择像素的数据是否具有该特殊图样；
其中，若该第一水平行的这些被选择像素呈渐暗排列，且该第二水平行的这些被选择像素呈渐亮排列，则这些被选择像素的数据具有该特殊图样；
其中，若该第一水平行的这些被选择像素呈渐亮排列，且该第二水平行的这些被选择像素呈渐暗排列，则这些被选择像素的数据具有该特殊图样。
12.如权利要求11所述的解交错方法，其中，该识别步骤更检查该第一水平行与该第二水平行的每一这些被选择像素与相邻像素的亮度差值，若每一亮度差值均小于一第二门坎值，则这些被选择像素的数据具有该特殊图样。
13.如权利要求11所述的解交错方法，其中，该识别步骤更检查该第一水平行的这些被选择像素中相距最远的二像素的亮度差值与该第二水平行的这些被选择像素中相距最远的二像素的亮度差值，若这些相距最远的二像素的亮度差值均大于一第三门坎值，则这些被选择像素的数据具有该特殊图样。
14.一种解交错方法，依据一交错式图像的一场中多个被选择像素的数据，并产生多个对应像素的数据，该方法包括：
识别这些被选择像素的数据是否具有一特殊图样；
以一第一解交错方法将这些被选择像素的数据解交错以产生一第一图像数据；
以一第二解交错方法将这些被选择像素的数据解交错以产生一第二图像数据；以及
依据该识别步骤的结果，选择该第一图像数据或该第二图像数据作为这些对应像素的数据；
其中，该第一解交错方法与该第二解交错方法不同。
15.如权利要求14所述的解交错方法，其中，这些被选择像素的数据是选自该交错式图像的该场中一第一水平行与一第二水平行。
16.如权利要求15所述的解交错方法，其中，这些被选择像素的数据是为这些被选择像素的亮度值；
其中，该识别步骤依据这些被选择像素的亮度值求得一垂直差值及一水平差值，若该垂直差值乘上一预定值后大于该水平差值，则这些被选择像素的数据具有该特殊图样。
17.如权利要求16所述的解交错方法，其中，该第一水平行与该第二水平行是为相邻，且这些被选择像素是相对排列于该第一水平行与该第二水平行。
18.如权利要求16所述的解交错方法，其中，求得该垂直差值的步骤包括：
计算这些被选择像素的亮度值的一平均值；
依据这些被选择像素的亮度值与该平均值赋予各该被选择像素一量化值；
计算多个量化差，各该量化差是为垂直相对的各该被选择像素的该量化值的绝对差值；以及
依据这些量化差加总而得该垂直差值。
19.如权利要求16所述的解交错方法，其中，求得该水平差值的步骤包括：
依据各该被选择像素与水平邻接像素间的亮度值的绝对差值得到多个一阶差值；
依据各该一阶差值求算多个二阶差值；
依据这些二阶差值加总而得该水平差值。
20.如权利要求15所述的解交错方法，其中，这些被选择像素的数据是为这些被选择像素的亮度值；
其中，该识别步骤依据这些被选择像素的亮度值，检查这些被选择像素的数据是否具有该特殊图样；
其中，若该第一水平行的这些被选择像素呈渐暗排列，且该第二水平行的这些被选择像素呈渐亮排列，则这些被选择像素的数据具有该特殊图样；
其中，若该第一水平行的这些被选择像素呈渐亮排列，且该第二水平行的这些被选择像素呈渐暗排列，则这些被选择像素的数据具有该特殊图样。
21.如权利要求20所述的解交错方法，其中，该识别步骤更检查该第一水平行与该第二水平行的每一这些被选择像素与相邻像素的亮度差值，若每一亮度差值均小于一第二门坎值，则这些被选择像素的数据具有该特殊图样。
22.如权利要求20所述的解交错方法，其中，该识别步骤更检查该第一水平行的这些被选择像素中相距最远的二像素的亮度差值与该第二水平行的这些被选择像素中相距最远的二像素的亮度差值，若这些相距最远的二像素的亮度差值均大于一第三门坎值，则这些被选择像素的数据具有该特殊图样。
23一种解交错方法，依据一交错式图像的一场中多个被选择像素的数据，并产生多个对应像素的数据，该方法包括：
以一第一解交错方法将这些被选择像素的数据解交错以产生一第一图像数据；
以一第二解交错方法将这些被选择像素的数据解交错以产生一第二图像数据；
接收该第一图像数据与该第二图像数据；
识别该第一图像数据与该第二图像数据是否具有一特殊图样；以及
依据该识别步骤的结果，选择该第一图像数据或该第二图像数据作为这些对应像素的数据；
其中，该第一解交错方法与该第二解交错方法不同。
24.如权利要求23所述的解交错方法，其中，这些被选择像素的数据是选自该交错式图像的该场中一第一水平行与一第二水平行。
25.如权利要求24所述的解交错方法，其中这些被选择像素的数据是为这些被选择像素的亮度值；
其中，该识别步骤依据这些被选择像素的亮度值求得一垂直差值及一水平差值，若该垂直差值乘上一预定值后大于该水平差值，则这些被选择像素的数据具有该特殊图样。
26.如权利要求25所述的解交错方法，其中，该第一水平行与该第二水平行是为相邻，且这些被选择像素是相对排列于该第一水平行与该第二水平行。
27.如权利要求25所述的解交错方法，其中，求得该垂直差值的步骤包括：
计算这些被选择像素的亮度值的一平均值；
依据这些被选择像素的亮度值与该平均值赋予各该被选择像素一量化值；
计算多个量化差，各该量化差是为垂直相对的各该被选择像素的该量化值的绝对差值；以及
依据这些量化差加总而得该垂直差值。
28.如权利要求25所述的解交错方法，其中，求得该水平差值的步骤包括：
依据各该被选择像素与水平邻接像素间的亮度值的绝对差值得到多个一阶差值；
依据各该一阶差值求算多个二阶差值；
依据这些二阶差值加总而得该水平差值。
29.如权利要求24所述的解交错方法，其中，这些被选择像素的数据是为这些被选择像素的亮度值；
其中，该识别步骤依据这些被选择像素的亮度值，检查这些被选择像素的数据是否具有该特殊图样；
其中，若该第一水平行的这些被选择像素呈渐暗排列，且该第二水平行的这些被选择像素呈渐亮排列，则这些被选择像素的数据具有该特殊图样；
其中，若该第一水平行的这些被选择像素呈渐亮排列，且该第二水平行的这些被选择像素呈渐暗排列，则这些被选择像素的数据具有该特殊图样。
30.如权利要求29所述的解交错方法，其中，该识别步骤更检查该第一水平行与该第二水平行的每一这些被选择像素与相邻像素的亮度差值，若每一亮度差值均小于一第二门坎值，则这些被选择像素的数据具有该特殊图样。
31.如权利要求29所述的解交错方法，其中，该识别步骤更检查该第一水平行的这些被选择像素中相距最远的二像素的亮度差值与该第二水平行的这些被选择像素中相距最远的二像素的亮度差值，若这些相距最远的二像素的亮度差值均大于一第三门坎值，则这些被选择像素的数据具有该特殊图样。
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