TW201349881A - Digital image processing system and its method - Google Patents
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本發明係有關於一種數位影像處理系統及數位影像處理方法,特別是有關於一種用來即時補償液晶螢幕均勻度的數位影像處理系統及數位影像處理方法。 The invention relates to a digital image processing system and a digital image processing method, in particular to a digital image processing system and a digital image processing method for instantly compensating for the uniformity of a liquid crystal screen.
隨著人類科技愈益發展蓬勃,不管是手機、電視、桌上電腦、筆記型電腦…等,都係屬於顯示裝置之範疇,而顯示裝置中所不可或缺重要部件即為顯示器,於是如何讓顯示器顯示出光更柔和或是更適合人眼觀看,具更優良視覺效果的相關研討,已行之有年,但此一課題,始終都佔相關研發內容之大宗所在。 With the development of human technology, mobile phones, TVs, desktop computers, notebook computers, etc. are all in the category of display devices, and important components in display devices are displays, so how to make the display It has been a long time to show that the light is softer or more suitable for human eyes, and has a better visual effect. However, this topic has always occupied a large part of relevant research and development content.
其中,醫療使用之單色顯示器著重點更在於顯示影像清晰度及解析度,醫療顯示器的亮度均勻度表現與真實呈現影像灰階是密切相關的,顯示亮度若不均勻亦會造成螢幕對比度不均勻,而此差異進一步更會造成DICOM Curve不準確,初始顯示器均勻度受到背光、濾光片等影響,其亮度均勻度大都在70%左右,亮度均勻度計算係採顯示器最大亮度減去顯示器最小亮度所得之數值再除以顯示器中央點位置量測亮度,即得亮度差距度數值,一般廠商所提供差異度數值小於30%,反之即為亮度均勻度可達70%以上。 Among them, the monochrome display for medical use focuses on displaying image sharpness and resolution. The brightness uniformity of the medical display is closely related to the gray level of the real image. If the brightness is uneven, the screen contrast will be uneven. Moreover, this difference will further cause the DICOM Curve to be inaccurate. The initial display uniformity is affected by the backlight, the filter, etc., and the brightness uniformity is mostly about 70%. The brightness uniformity calculation adopts the maximum brightness of the display minus the minimum brightness of the display. The obtained value is divided by the position of the central point of the display to measure the brightness, that is, the brightness difference degree value is obtained, and the difference value provided by the general manufacturer is less than 30%, and the brightness uniformity is more than 70%.
而相關習知技術之實施方式綜觀大致可分為數類,但都具缺失需改進點存在。其一為將顯示器分成數個區域調整,但此方式易有馬賽克現象。其二為以線性內插方式來補償亮度,但此方式易使均勻度不夠平順。 The implementation of related prior art techniques can be broadly divided into several categories, but all have missing points to be improved. One is to divide the display into several areas, but this method is easy to mosaic. The second is to compensate the brightness by linear interpolation, but this method is easy to make the uniformity not smooth.
本發明即立基於上述先前技術並做更進一步之顯示器影像處理,以子像素(sub-pixel)為基準單位,使顯示器顯示均勻度表現效果更佳可高達95%。 The present invention is based on the above prior art and further display image processing, with sub-pixel as a reference unit, so that the display display uniformity performance can be as high as 95%.
本發明還解決先前技術顯示亮度的問題,一般桌上型電腦亮度約為 300nits、筆記型電腦亮度約200nits,而8bit之面板(panel),最大顯示灰階值為255,相鄰灰階值間,例如:灰階值254與255間對比度較不明顯,人眼無法明顯區隔出,亦即視覺效果較佳,長久觀看較不傷眼,但若提升亮度至1000nits下,則此灰階差異值由於對比度變大的影響會明顯突出,亦即亮度提升下,灰階差異值被放大了,反而會妨礙人眼觀看,本發明同時欲處理此類因亮度過亮下造成灰階差異值對比明顯之問題。 The invention also solves the problem of displaying brightness in the prior art, and generally the brightness of the desktop computer is about 300nits, notebook computer brightness is about 200nits, and 8bit panel, the maximum display grayscale value is 255, between adjacent grayscale values, for example: grayscale values between 254 and 255 contrast is not obvious, the human eye can not be obvious The area is separated, that is, the visual effect is better, and the long-term viewing is less harmful, but if the brightness is increased to 1000 nits, the gray-scale difference value will be conspicuous due to the contrast increase, that is, the brightness is increased, the gray level The difference value is enlarged, but it hinders the human eye from viewing. The present invention also wants to deal with such a problem that the contrast value of the gray scale difference is obvious due to excessive brightness.
為了解決上述問題,本發明之一主要目的在於提供一種補償液晶螢幕均勻度的數位影像處理系統及其處理方法,其主要包括:一個係數運算裝置、一個係數暫存裝置、一個資料輸入裝置、一個運算裝置(Digital Uniformity Compensation,DUC)及一個資料輸出裝置,經由本發明所提供之數位影像處理系統及其處理方法,可在不犧牲太多亮度的前提下,提升影像均勻度由70%至95%,增加影像顯示均勻度,更適合人眼長時觀看。 In order to solve the above problems, a main object of the present invention is to provide a digital image processing system for compensating for the uniformity of a liquid crystal screen and a processing method thereof, which mainly include: a coefficient operation device, a coefficient temporary storage device, a data input device, and a processing device. Digital Uniformity Compensation (DUC) and a data output device, through the digital image processing system and the processing method thereof provided by the present invention, can improve image uniformity from 70% to 95 without sacrificing too much brightness. %, increase the uniformity of image display, more suitable for long-term viewing.
本發明之另一主要目的在於提供一個數位影像處理系統及其處理方法,包括一個係數運算裝置,此裝置係針對每個子像素(Sub-pixel)進行並列處理運算,能一次同時處理運算總量,加快處理速度,能有效提升運算處理效能。 Another main object of the present invention is to provide a digital image processing system and a processing method thereof, including a coefficient operation device for performing parallel processing operations for each sub-pixel (Sub-pixel), which can simultaneously process the total amount of operations at a time. Speed up processing, can effectively improve the processing efficiency.
本發明之另一主要目的在於提供一個數位影像處理系統及其處理方法,緊接於資料輸出裝置後,進一步包含一抖動(Dithering)裝置,此抖動裝置可針對經均勻度補償公式運算後之資料,再針對所有數位影像階層(Digital Driving Level,DDL),做進一步影像處理,讓影像顯示更為均勻,視覺效果更佳,更適人眼觀看。 Another main object of the present invention is to provide a digital image processing system and a processing method thereof, which, after the data output device, further includes a dithering device, which can be used for the data after the uniformity compensation formula Further image processing is performed for all digital driving levels (DDL) to make the image display more uniform, visually better, and more suitable for human viewing.
根據上述目的,本發明係提供一種補償液晶螢幕均勻度的數位影像處理系統包括:一個係數運算裝置,係依據複數個點亮度值計算出複數個係數、一個係數暫存裝置,係用以儲存複數個係數、一個影像輸入裝置,用 以傳輸並輸入影像訊號,影像訊號是由多個像素所組成,每一個像素中包含多個子像素且每一個子像素具有一個數位影像階層、一個運算裝置,係自係數暫存裝置中讀取複數個係數後,將複數個係數與一個均勻度補償公式S(x i )進行運算,以計算出每一個子像素的補償值,及一個資料輸出裝置,用以將每一個子像素的補償值與相應每一個子像素之數位影像階層相乘後輸出至螢幕。 According to the above object, the present invention provides a digital image processing system for compensating for uniformity of a liquid crystal screen, comprising: a coefficient operation device for calculating a plurality of coefficients and a coefficient temporary storage device according to a plurality of point brightness values, for storing a plurality of coefficients Coefficients, an image input device for transmitting and inputting image signals, the image signal is composed of a plurality of pixels, each pixel includes a plurality of sub-pixels and each sub-pixel has a digital image hierarchy, an arithmetic device, After reading a plurality of coefficients from the coefficient temporary storage device, calculating a plurality of coefficients with a uniformity compensation formula S ( x i ) to calculate a compensation value for each sub-pixel, and a data output device for The compensation value of each sub-pixel is multiplied by the digital image level of each sub-pixel and output to the screen.
根據上述目的,本發明再提供一種補償液晶螢幕均勻度的數位影像處理方法,其數位影像處理方法包括:提供一個係數運算裝置,係依據複數個點亮度值計算出複數個係數、提供一個係數暫存裝置,係用以儲存複數個係數、提供一個影像輸入裝置,用以傳輸並輸入一個影像訊號,影像訊號是由多個像素所組成,每一個像素中包含多個子像素且每一個子像素具有一個數位影像階層、提供一個運算裝置,係自係數暫存裝置中讀取複數個係數後,將複數個係數與一個均勻度補償公式S(x i )進行運算,以計算出每一個子像素的補償值,及提供一個資料輸出裝置,用以將每一個子像素的補償值與相應每一個子像素之數位影像階層相乘後輸出至一螢幕。 According to the above object, the present invention further provides a digital image processing method for compensating for uniformity of a liquid crystal screen, wherein the digital image processing method comprises: providing a coefficient operation device, calculating a plurality of coefficients according to a plurality of point brightness values, and providing a coefficient temporarily The storage device is configured to store a plurality of coefficients and provide an image input device for transmitting and inputting an image signal. The image signal is composed of a plurality of pixels, each pixel includes a plurality of sub-pixels and each of the sub-pixels has A digital image hierarchy, providing an arithmetic device, after reading a plurality of coefficients from the coefficient temporary storage device, computing a plurality of coefficients with a uniformity compensation formula S ( x i ) to calculate each sub-pixel The compensation value is provided, and a data output device is provided for multiplying the compensation value of each sub-pixel by the digital image level of each sub-pixel and outputting to a screen.
經由本發明所提供之數位影像處理系統及其處理方法,可有效針對每個子像素並列處理運算,有利於加快處理速度,在不犧牲太多亮度前提下,影像均勻度可由70%提升至95%;且於資料輸出裝置後,進一步包含一個抖動裝置,此抖動裝置可針對所有數位影像階層,做進一步影像處理,使輸出影像視覺效果更佳,更利於人眼觀看。 The digital image processing system and the processing method thereof provided by the invention can effectively process the parallel processing for each sub-pixel, which is beneficial to speed up the processing speed, and the image uniformity can be improved from 70% to 95% without sacrificing too much brightness. And after the data output device, further comprising a dithering device, which can perform further image processing for all digital image layers, so that the output image has better visual effect and is more convenient for human eyes to view.
由於本發明主要係揭露一種關於醫療影像規範(DICOM、AAPM-TG18)的數位影像處理系統及數位影像處理方法,其中數位影像處理系統及數位影像處理方法的基本構造及功能,已為相關技術領域具有通常知識者所能明瞭,故以下文中之說明,僅針對與本發明之數位影像處理系統及數位影 像處理方法之特徵處進行詳細說明。同時,以下文中所對照之圖式,係表達與本發明特徵有關之結構示意,故未依據實際尺寸繪製,合先敘明。 The present invention mainly discloses a digital image processing system and a digital image processing method for a medical image specification (DICOM, AAPM-TG18), wherein the basic structure and function of the digital image processing system and the digital image processing method have been related technical fields. It is clear to those skilled in the art that the following description is directed only to the digital image processing system and digital image of the present invention. The details of the processing method are described in detail. At the same time, the drawings referred to in the following text are indicative of the structure related to the features of the present invention, and therefore are not drawn according to actual dimensions, and are described first.
首先,請參閱圖1,為本發明之數位影像處理系統之第一實施例之系統示意圖,包括:一個係數運算裝置10,可為一個PC或準系統,是以一個亮度量測器(Light sensor)101量測複數個點亮度值,利用複數點亮度值計算出複數個係數,供後續計算補償值使用、一個係數暫存裝置20,係用以儲存複數個係數,在本實施例中,此係數暫存裝置可為一個記憶體(Memory)、一個影像輸入裝置30,用以傳輸並輸入一個影像訊號301,其影像訊號301是由多個像素所組成,每一個像素中包含多個子像素,其中子像素可為彩色影像訊號之RGB(其中:R是表示紅色-red;G是表示綠色-green;而B是表示藍色-blue)中任一子像素或是單色影像訊號之LCR(其中:L是表示左-left;C是表示中-center;而R是表示右-right)中任一子像素,且每一個子像素具有一個數位影像階層,當數位影像階層為8bit,則單色影像訊號301為0~255階;若為10bit則單色影像訊號301為0~1023階、一個運算裝置40,係自係數暫存裝置20中讀取複數個係數後,將複數個係數與一個均勻度補償公式S(x i )進行運算,以計算出每一個子像素的補償值,及一個資料輸出裝置50,用以將每一個子像素的補償值與相應每一個子像素之數位影像階層相乘後輸出至螢幕,經本發明所提供之數位影像處理系統1處理後,可有效提升亮度均勻度至95%以上,解決顯示器亮度差異的問題。 First, please refer to FIG. 1 , which is a schematic diagram of a system according to a first embodiment of a digital image processing system of the present invention, comprising: a coefficient computing device 10 , which can be a PC or a barebone system, and is a brightness sensor (Light sensor). 101 measures a plurality of point brightness values, calculates a plurality of coefficients by using the complex point brightness values for subsequent calculation of the compensation value, and a coefficient temporary storage device 20 for storing a plurality of coefficients, in this embodiment, The coefficient temporary storage device can be a memory (Memory) and an image input device 30 for transmitting and inputting an image signal 301. The image signal 301 is composed of a plurality of pixels, and each pixel includes a plurality of sub-pixels. The sub-pixels may be RGB of color image signals (where: R is red-red; G is green-green; B is blue-blue) or LCR of monochrome image signals ( Where: L is a left-left; C is a medium-center; and R is a right-right, and each sub-pixel has a digital image hierarchy. When the digital image hierarchy is 8 bits, the single Color shadow The signal 301 is 0~255 steps; if it is 10bit, the monochrome image signal 301 is 0~1023 steps, and an arithmetic device 40, after reading a plurality of coefficients from the coefficient temporary storage device 20, the plurality of coefficients are uniformly The degree compensation formula S ( x i ) is operated to calculate the compensation value of each sub-pixel, and a data output device 50 is configured to compare the compensation value of each sub-pixel with the digital image level of each corresponding sub-pixel. After being multiplied and output to the screen, after being processed by the digital image processing system 1 provided by the present invention, the brightness uniformity can be effectively improved to over 95%, and the problem of difference in display brightness can be solved.
接著,請參閱圖2,係為本發明之數位影像處理系統之影像訊號示意圖。在於本發明中每一個像素302包含多個子像素303,其中子像素303可為彩色影像訊號之RGB(其中:R是表示紅色-red;G是表示綠色-green;而B是表示藍色-blue)中任一子像素303或是單色影像訊號之LCR(其中:L是表示左-left;C是表示中-center;而R是表示右-right)中任一子像素30。因此,本發明係以三個子像素303做為最小顯示單位,可針對每個子像素(Sub-pixel)進行處理運算,加快處理速度,有效提升運算處理效能。 Next, please refer to FIG. 2, which is a schematic diagram of image signals of the digital image processing system of the present invention. In the present invention, each pixel 302 includes a plurality of sub-pixels 303, wherein the sub-pixels 303 can be RGB of color image signals (where: R is red-red; G is green-green; and B is blue-blue) Any of the sub-pixels 303 is either LCR of a monochrome image signal (where: L is a left-left; C is a medium-center; and R is a right-right). Therefore, in the present invention, the three sub-pixels 303 are used as the minimum display unit, and processing operations can be performed for each sub-pixel (Sub-pixel) to speed up the processing and effectively improve the processing performance.
接著特別針對本發明之技術特徵予以說明,如下為本發明之均勻度補償公式S(x i )之運算方式,其中均勻度補償公式為:S(x i )=a 1×(x i -x o )0+a 2×(x i -x o )1+a 3×(x i -x o )2+a 4×(x i -x o )3+……+a n ×(x i -x o )n,其中a 1、a 2、a 3、a 4……a n 為任意實數,而x o 為一個子像素303內插起始位置,x i 為待做內插處理的子像素303位置,請參閱圖3,係為本發明之三次方非線性均勻度補償公式S(x i )運算流程示意圖,由其中每一步驟(Step)之處理中,可看出係針對每一係數(例如:a 1、a 2、a 3、a 4)採並列運算方式同時進行處理,根據圖3所示可將流程陳述如下: Then, the technical features of the present invention are specifically described. The following is a calculation method of the uniformity compensation formula S ( x i ) of the present invention, wherein the uniformity compensation formula is: S ( x i )= a 1 ×( x i - x o ) 0 + a 2 ×( x i - x o ) 1 + a 3 ×( x i - x o ) 2 + a 4 ×( x i - x o ) 3 +...+ a n ×( x i - x o ) n , where a 1 , a 2 , a 3 , a 4 ... a n is any real number, and x o is the interpolation start position of one sub-pixel 303, and x i is the sub-pixel to be interpolated 303 position, please refer to FIG. 3, which is a schematic diagram of the cubic non-linear uniformity compensation formula S ( x i ) operation flow of the present invention, and in each step (Step), it can be seen that each coefficient is (For example: a 1 , a 2 , a 3 , a 4 ) The simultaneous operation is performed simultaneously, and the process can be stated as follows according to Figure 3:
步驟1:係數a 1、a 2、a 3及a 4同時帶入進行運算,此時a 1為零次方項帶入後數值為a 1×(x i -x o )0、a 2為一次方項帶入後數值為a 2×(x i -x o )1、a 3為二次方項帶入後數值為a 3×(x i -x o )1、a 4為三次方項帶入後數值為a 4×(x i -x o )1,接著進入步驟2。 Step 1: coefficients a 1, a 2, a 3. 4 and simultaneously into a calculates, at this time after a zero power into an item value of a 1 × (x i - x o) 0, a 2 is After the primary term is brought in, the value is a 2 ×( x i - x o ) 1 , and a 3 is the quadratic term. The value is a 3 ×( x i - x o ) 1 , and a 4 is the cubic term. The value after taking in is a 4 ×( x i - x o ) 1 , and then proceeds to step 2.
步驟2:由於a 1為零次方項故帶入後數值不做處理仍為a 1×(x i -x o )0、a 2為一次方項故帶入後數值亦不做處理仍為a 2×(x i -x o )1、a 3為二次方項故於此步驟需乘上(x i -x o )1、a 4為三次方項故於此步驟需乘上(x i -x o )1,接著進入步驟3。 Step 2: Since a 1 is a zero-order term, the value is not processed after it is taken. a 1 ×( x i - x o ) 0 , a 2 is a square term, so the value is not processed after it is taken. a 2 ×( x i - x o ) 1 , a 3 is a quadratic term, so this step needs to be multiplied by ( x i - x o ) 1 , a 4 is a cubic term, so this step needs to be multiplied ( x i - x o ) 1 , then proceed to step 3.
步驟3:由於a 1為零次方項故帶入後數值不做處理仍為a 1×(x i -x o )0、a 2為一次方項故帶入後數值亦不做處理仍為a 2×(x i -x o )1、a 3為二次方項於步驟2已乘上(x i -x o )1故數值變為a 3×(x i -x o )2、a 4為三次方項故於此步驟需再乘上(x i -x o )1,接著進入步驟4。 Step 3: Since a 1 is a zero-order term, the value is not processed after it is taken. a 1 ×( x i - x o ) 0 , a 2 is a square term, so the value is not processed after it is taken. a 2 ×( x i - x o ) 1 , a 3 is a quadratic term multiplied by ( x i - x o ) 1 in step 2, so the value becomes a 3 ×( x i - x o ) 2 , a 4 is a cubic term, so this step needs to be multiplied by ( x i - x o ) 1 , and then proceeds to step 4.
步驟4:由於a 1為零次方項故帶入後數值不做處理仍為a 1(x i -x o )0、a 2為一次方項故帶入後數值亦不做處理仍為a 2(x i -x o )1、a 3為二次方項故帶入後數值不做處理仍為a 3×(x i -x o )2、a 4為三次方項於步驟3已乘上(x i -x o )1故數值變為a 4(x i -x o )3。經上述四步驟處理後可得到運算結果為S(x i )=a 1 ×(x i -x o )0+a 2×(x i -x o )1+a 3×(x i -x o )2+a 4×(x i -x o )3,上述即為本發明之均勻度補償公式S(x i )並列運算方式,採用此並列運算方式同時處理資料可有效提升 處理的速度,加快運算處理的時間。 Step 4: Because it is a 1 entry into the zero power value after treatment is still not a 1 (x i - x o ) 0, a 2 is a side entry into the value it remains a treatment nor do 2 ( x i - x o ) 1 , a 3 is a quadratic term, so the value is not processed after it is still a 3 ×( x i - x o ) 2 , a 4 is a cubic term which is multiplied in step 3. Upper ( x i - x o ) 1 so the value becomes a 4 ( x i - x o ) 3 . After the above four steps, the operation result is S ( x i )= a 1 ×( x i - x o ) 0 + a 2 ×( x i - x o ) 1 + a 3 ×( x i - x o 2 + a 4 ×( x i - x o ) 3 , the above is the parallelness calculation formula S ( x i ) of the present invention. The parallel processing method can effectively improve the processing speed and speed up the processing. The time of the processing.
舉一實際案例說明如下:例如有一個5M面板(Panel)解析度為2560×2048其係數值有2048組,由記憶體讀出面板中每一條線的係數,例如:a 1、a 2、a 3、a 4,由於本發明是針對子像素303做處理故一解析度為2560×2048之5M面板於第一條線上之子像素303位置有2560×3個亦即影像均勻度可提升3倍,此時欲求得第10單色子像素303於L位置之補償值:其中第一條線的係數a 1=0.997、係數a 2=-4.287×10^(-6)、係數a 3=9.039×10^(-9)、係數a 4=-5.06×10^(-12),而子像素303內插之初始位置x o =0、待做內插處理之子像素303位置x i =10,皆輸入均勻度補償公式S(xi)=a 1×(x i -x o )0+a 2×(x i -x o )1+a 3×(x i -x o )2+a 4×(x i -x o )3,可求得補償值為0.99696616394,再帶入求得第10單色子像素303於L位置的數位影像階層,其輸出值等於第10單色子像素303於L位置的數位影像階層輸入值乘以其相對應之補償值,若第一條線之第10單色子像素303於L位置之原始數位影像階層輸入值為100,故經運算後可得到數位影像階層輸出值為99.696616394。依此可看出本發明係針對面板解析度大小區隔出每一條線具有其相對應係數,帶入均勻度補償公式計算,求得一個補償值,再將此補償值與相對應之子像素303數位影像階層輸入值,做相乘處理即可得本發明之子像素303數位影像階層輸出值,可有效針對影像均勻度進行補償,提升影像均勻度至95%。 A practical case is illustrated as follows: for example, there is a 5M panel with a resolution of 2560×2048 and a coefficient value of 2048 groups. The coefficients of each line in the panel are read by the memory, for example: a 1 , a 2 , a 3 , a 4 , because the present invention is processed for the sub-pixel 303, the 5M panel with a resolution of 2560×2048 has 2560×3 positions on the first line of the sub-pixel 303, that is, the image uniformity can be increased by 3 times. At this time, the compensation value of the 10th monochrome sub-pixel 303 at the L position is determined: the coefficient a 1 =0.997 of the first line, the coefficient a 2 =-4.287×10^(-6), and the coefficient a 3 =9.039× 10^(-9), coefficient a 4 =-5.06×10^(-12), and the initial position x o =0 of the sub-pixel 303 interpolation, and the position x i =10 of the sub-pixel 303 to be interpolated, Input uniformity compensation formula S ( xi )= a 1 ×( x i - x o ) 0 + a 2 ×( x i - x o ) 1 + a 3 ×( x i - x o ) 2 + a 4 ×( x i - x o ) 3 , the compensation value is 0.99696616394, and then the digital image hierarchy of the 10th monochrome sub-pixel 303 at the L position is obtained, and the output value is equal to the 10th monochrome sub-pixel 303 at the L position. Digital image hierarchy input value multiplied by its relative For the compensation value, if the 10th monochrome sub-pixel 303 of the first line has an input value of 100 in the original digital image hierarchy of the L position, the digital image layer output value obtained by the operation is 99.696616394. It can be seen that the present invention has a corresponding coefficient for each line of the panel resolution, and is calculated by the uniformity compensation formula to obtain a compensation value, and then the compensation value and the corresponding sub-pixel 303. The digital image layer input value can be multiplied to obtain the digital image layer output value of the sub-pixel 303 of the present invention, which can effectively compensate for the image uniformity and improve the image uniformity to 95%.
接著,請參閱圖4,為本發明之數位影像處理系統之第二實施例之系統示意圖,可看出其係進一步包含一個抖動裝置60,於資料輸出裝置50後,加裝抖動裝置60可針對子像素303數位影像階層輸出值進行全域均勻處理,解決邊界模糊化效果,有效提升影像柔和度,使人眼視覺效果感覺更佳,更適宜長久使用而不傷眼力,至於其餘數位影像處理系統1結構組成或相關功能主體運算方式皆與前述實施例相同,在此不再贅述。 4 is a schematic diagram of a system according to a second embodiment of the digital image processing system of the present invention. It can be seen that the system further includes a shaking device 60. After the data output device 50, the loading device 60 can be Sub-pixel 303 digital image layer output value for global uniform processing, to solve the boundary blurring effect, effectively improve the image softness, make the human eye visual effect better, more suitable for long-term use without hurting the eye, as for the remaining digital image processing system 1 The structure of the structure or the related function main operation is the same as that of the foregoing embodiment, and details are not described herein again.
接著,請再參閱圖5並配合圖2及圖4,其中圖5為本發明之數位影像處理方法2之第一實施例之流程示意圖,數位影像處理方法2如下: Next, please refer to FIG. 5 and FIG. 2 and FIG. 4 , wherein FIG. 5 is a schematic flowchart of the first embodiment of the digital image processing method 2 of the present invention. The digital image processing method 2 is as follows:
步驟5001:提供一個係數運算裝置10,係依據複數個點亮度值計算出複數個係數,係將螢幕分成複數個區間可能為4、16、36……區間,續以亮度量測器(Light sensor)101量測區間中間點亮度值,續推估出整體亮度平面曲線,可得每一條線之複數個係數,供後續計算每一個子像素303的補償值使用,接著進入步驟5002。 Step 5001: Providing a coefficient operation device 10, which calculates a plurality of coefficients according to a plurality of point brightness values, and divides the screen into a plurality of intervals, which may be 4, 16, 36, ..., and continues with a brightness sensor (Light sensor) 101. Measuring the middle point brightness value of the interval, continuously estimating the overall brightness plane curve, and obtaining a plurality of coefficients of each line for subsequent calculation of the compensation value of each sub-pixel 303, and then proceeding to step 5002.
步驟5002:提供一個係數暫存裝置20,係用以儲存複數個係數,供後續計算每一個子像素303的補償值使用,接著進入步驟5003。 Step 5002: A coefficient temporary storage device 20 is provided for storing a plurality of coefficients for subsequent calculation of the compensation value of each sub-pixel 303, and then proceeds to step 5003.
步驟5003:提供一個影像輸入裝置30,用以傳輸並輸入一個影像訊號301,影像訊號301是由多個像素302所組成,每一個像素302中包含多個子像素303,其中子像素303可為彩色影像訊號之RGB(其中:R是表示紅色-red;G是表示綠色-green;而B是表示藍色-blue)中任一子像素303或是單色影像訊號之LCR(其中:L是表示左-left;C是表示中-center;而R是表示右-right)中任一子像素303,且每一個子像素303具有一個數位影像階層,接著進入步驟5004。 Step 5003: An image input device 30 is provided for transmitting and inputting an image signal 301. The image signal 301 is composed of a plurality of pixels 302. Each of the pixels 302 includes a plurality of sub-pixels 303, wherein the sub-pixels 303 can be colored. The RGB of the image signal (where: R is red-red; G is green-green; B is blue-blue) or any sub-pixel 303 of the monochrome image signal (where: L is the representation) Left-left; C is a medium-center; and R is a right-right one of the sub-pixels 303, and each sub-pixel 303 has a digital image hierarchy, and then proceeds to step 5004.
步驟5004:提供一個運算裝置40,係自係數暫存裝置20中讀取複數個係數後,將複數個係數與一個均勻度補償公式S(x i )進行運算,以計算出每一個子像素303的補償值,最後進入步驟5005。 Step 5004: After a arithmetic unit 40, the coefficient line from the temporary storage device 20 reads a plurality of coefficients, the coefficients with a plurality of uniformly compensation equation S (x i) calculates, in order to calculate each sub-pixel 303 The compensation value finally proceeds to step 5005.
步驟5005:提供一個資料輸出裝置50,用以將每一個子像素303的補償值與相應每一個子像素303之數位影像階層相乘後輸出至一螢幕。 Step 5005: A data output device 50 is provided for multiplying the compensation value of each sub-pixel 303 by the digital image level of each sub-pixel 303 and outputting it to a screen.
接著,請繼續參閱圖6,為本發明之數位影像處理方法2之第二實施例之流程示意圖,其數位影像處理方法2之方法組成或相關功能主體運算方式皆與前述實施例相同,在此不再贅述,僅增加描述步驟6006:其係進一步提供一個抖動裝置60,用以對數位影像階層全域做均勻處理,能有效提升影像柔和度,使人眼觀視效果更佳,更適宜長時間觀看。 The following is a schematic flowchart of the second embodiment of the digital image processing method 2 of the present invention. The method of the digital image processing method 2 or the related function main operation method are the same as the foregoing embodiment. For further description, the description step 6006 is further added. The method further provides a dithering device 60 for uniformly processing the entire image hierarchy, which can effectively improve the image softness and make the human eye look better and more suitable for a long time. Watch.
雖然本發明以前述之較佳實施例揭露如上,然其並非用以限定本發明,任何熟習相像技藝者,在不脫離本發明之精神和範圍內,當可作些許 之更動與潤飾,因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。 While the present invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the scope of the present invention, and may be made by those skilled in the art without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the patent application attached to the specification.
1‧‧‧數位影像處理系統 1‧‧‧Digital Image Processing System
2‧‧‧數位影像處理方法 2‧‧‧Digital image processing method
10‧‧‧係數運算裝置 10‧‧‧ coefficient computing device
20‧‧‧係數暫存裝置 20‧‧‧ coefficient temporary storage device
30‧‧‧影像輸入裝置 30‧‧‧Image input device
40‧‧‧運算裝置 40‧‧‧ arithmetic device
50‧‧‧資料輸出裝置 50‧‧‧ data output device
60‧‧‧抖動裝置 60‧‧‧Shake device
101‧‧‧亮度量測器 101‧‧‧Brightness measuring device
301‧‧‧影像訊號 301‧‧‧Image signal
302‧‧‧像素 302‧‧ ‧ pixels
303‧‧‧子像素 303‧‧‧Subpixel
5001、5002、5003、5004、5005‧‧‧步驟 5001, 5002, 5003, 5004, 5005‧ ‧ steps
6001、6002、6003、6004、6005、6006‧‧‧步驟 6001, 6002, 6003, 6004, 6005, 6006‧‧‧ steps
圖1 係為本發明之數位影像處理系統之第一實施例之系統示意圖;圖2 係為本發明之數位影像處理系統之影像訊號示意圖;圖3 係為本發明之三次方非線性均勻度補償公式S(x i )運算流程示意圖;圖4 係為本發明之數位影像處理系統之第二實施例之系統示意圖;圖5 係為本發明之數位影像處理方法之第一實施例之流程示意圖;圖6 係為本發明之數位影像處理方法之第二實施例之流程示意圖。 1 is a schematic diagram of a system of a first embodiment of a digital image processing system of the present invention; FIG. 2 is a schematic diagram of image signals of the digital image processing system of the present invention; and FIG. 3 is a cubic nonlinear uniformity compensation of the present invention. formula S (x i) computing a schematic flow chart; a schematic diagram of a second embodiment of the system according to the digital image processing system of the present invention lines in FIG. 4; the first embodiment of the process of digital image processing of the present invention Figure 5 is a schematic view of the method; FIG. 6 is a schematic flow chart of a second embodiment of the digital image processing method of the present invention.
1‧‧‧數位影像處理系統 1‧‧‧Digital Image Processing System
10‧‧‧係數運算裝置 10‧‧‧ coefficient computing device
20‧‧‧係數暫存裝置 20‧‧‧ coefficient temporary storage device
30‧‧‧影像輸入裝置 30‧‧‧Image input device
40‧‧‧運算裝置 40‧‧‧ arithmetic device
50‧‧‧資料輸出裝置 50‧‧‧ data output device
101‧‧‧亮度量測器 101‧‧‧Brightness measuring device
301‧‧‧影像訊號 301‧‧‧Image signal
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