當顯示設備在色域的擴展上有長足的進展時，在新一代窄頻寬背光顯示器所上呈現的觀測者同色異譜的現象卻是一個需要注意的地方。在先前的研究中顯示，使用窄頻寬背光顯示器時，在軟式打樣以及影片後製調色的情境中，會有產生觀測者同色異譜的現象。因此在本研究中，將探討相較於汞燈光源投影系統，雷射光源投影系統是否較容易產生觀測者同色異譜的現象？為了達到這個目的及驗證結論，在本研究中也將發展一套能夠快速判斷觀測者色匹配函數的方法。有此判斷方法後，下一步就可確認目前CIE所訂定的標準色匹配函數是否適用於雷射光源投影系統。
本研究的實驗共分為兩個部份來進行。實驗一是以色塊來進行實驗，而實驗二則是以影像來進行實驗。實驗一與實驗二中的觀測者本身的變動性 (intra-observer variability) 與觀測者間的變動性 (inter-observer variability) 則被拿來計算與分析，同時當成計算觀測者變動性 (observer variability) 的依據。在這兩個實驗中，觀測者變動性皆為高，表示觀測者同色異譜的現象容易產生在雷射光源的投影系統中。因此極需一個解決方案來減輕產生於雷射光源的投影系統上的觀測者同色異譜之現象。為發展此解決方案，本研究著重的重點在於如何推測個人的色匹配函數類別的方法。
在實驗一中，開發了由判斷14個色塊的方式而快速判斷色匹配函數類別的方法。在實驗二，藉由色塊類別的判斷進而預測該觀測者之所屬影像類別的判斷方法。色塊類別和影像類別之間有存在其關連性，但未來可藉由實施一些改進來提升其預測率。在每個實驗中，所得出的色匹配函數分類也和CIE標準色匹配函數進行比較。結果發現在兩個實驗中，CIE標準色匹配函數皆不是適用於雷射光源投影系統的最佳色匹配函數。故在使用雷射光源的投影系統時，一個新的色匹配函數類別是需要被定義。
當此快速色匹配函數判斷方法開發完成後，在需要開發個人化色彩管理系統時將會是事半功倍的。個人化色彩管理系統的開發對於降低觀測者同色異譜現象的產生是非常有助益的。
除了快速色匹配函數判斷方法的導入之外，iccMAX對於個人化色彩管理系統的開發也是必要的一環。雖然ICC v4可以使用device link profile來達到相同的目的，但當需要更換色匹配函數資料時，則需要大費周章地變動資料。新版iccMAX的架構可以接受自定義的色匹配函數資料，因此在更換色匹配函數資料時，相對上會容易許多。在本研究中也藉由本研究中所發展之快速判斷色匹配函數的方式與iccMAX的架構，驗證新一代個人色彩管理系統得以快速實現。

As display technology advances in color gamut, the potential of experiencing higher degree of observer metamerism is more likely with narrow bandwidth stimuli display devices. In previous studies, it was confirmed that observer metamerism was introduced in soft proofing and color grading scenarios. Hence, it is desired to investigate whether laser-based projection system would introduce observer metamerism compared to halogen-based projection system. In order to achieve the goal and verify the finding, it is necessary to develop a quick method to estimate observer’s color matching function category. With the method developed, the next step would be determining whether the CIE Standard Observer is suitable for the laser-based projection system.

In this study, a two-part experiment was designed and conducted. Experiment 1 was based on color patches and Experiment 2 was based on images. Intra-observer and inter-observer variability were calculated and analyzed to determine the observer variability. The observer variability in both experiments was reported to be high, and this indicated observer metamerism was introduced in laser-based projection system. Therefore, there is a need to derive a solution to minimize the effect of observer metamerism introduced by laser-based projection system. This study focuses on categorizing observer’s own color matching functions (CMFs) category.

In Experiment 1, a quick method utilizing 14 color patches to estimate observer’s color matching function category was developed. The estimated category was for color patches. In Experiment 2, a prediction was made using the quick method from the color patch category to estimate the category for images. A correlation existed, but some improvements were suggested to enhance the prediction rate in the future. Comparison to CIE Standard Observer was also conducted for each experiment, and the results suggested that the CIE Standard Observer was not suitable for laser-based projection system. A new observer category was required at least for the group of observers participating the experiments.

With the quick method of estimating observer color matching function category developed, it is much easier to achieve the realization of personalized color management system, hence, reducing the issue of observer metamerism.

iccMAX has made the realization of personalized color management system much more practical. Although there is a workaround using device link profile in ICC v4, updating CMFs data would be an issue. Since the new iccMAX architecture accepts the custom observer CMFs data natively, it is easier to utilize the iccMAX architecture to update the CMFs data. It is possible to develop a practical personalized color management system with iccMAX and the quick method developed in this study to enhance observer’s viewing experience and perceived accuracy.

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