將影像轉換為黑白的完整指南

The advent of color pictures looks to have rendered black and white useless. But is this really the case? Apparently, black and white hues have not entirely disappeared from our lives. When people see black and white photos, they tend to concentrate more on the most basic lines of people and the sense of texture of objects. Artists commonly use black and white to emphasize vintage effects for historical documentaries. Some designers also choose to convert an image to black and white before adding another bright color to highlight a specific part of the image. If you also want to make your photos look time-traveled or more dramatic, you can try the methods we recommend in this article to make images black and white. We'll provide both desktop and online options for users on different platforms to try.

第一部分：如何在 Photoshop 中將影像變成黑白色

當我們需要對影像進行一些修改時，首先想到的工具是 Adobe Photoshop，這個程式已經變得非常流行，已經成為攝影行業的標準。該程式已經成為圖形行業的標準，它可以幫助我們使圖像看起來像任何顏色，當然包括黑白顏色。您的計算機上有什麼系統並不重要。您可以在電腦上安裝 Photoshop 並開始使用它。除了改變色調，我們還可以使用它為圖片添加更多效果，例如裁剪、選擇、增強品質、去除雜質等等。

這裡我們將介紹如何在 Photoshop 中將影像轉換為黑白。請依照以下步驟操作。

Step 1. Get Adobe Photoshop on your computer. Please note that if you are a new user, you can enjoy a 7-day free trial first. However, Photoshop is a paid program, and you will have to upgrade your account if you want to continue unlocking the service.

Step 2. After launching it, click File > Open and choose the color image you want to convert.

Step 3. When the image is loaded, navigate to Window and click Adjustments. Here you will find a black-and-white icon. Press on it.

Step 4. The Properties panel will open. Choose Color Slider, then move the slider to adjust the gray tones of your image. Take your time setting it up until you are satisfied with the picture's black-and-white appearance.

Step 5. Next, click File in the top left corner and choose Save As in the drop-down list. Then, pick a storage path for your converted images.

完成以上步驟後，我們就成功將影像變成了黑白色。但在操作過程中，使用者可能會發現Photoshop的介面確實比較複雜，有些按鈕不容易找到。儘管功能齊全，新手幾乎不會使用Photoshop；我們往往需要很長時間去學習和練習才能慢慢熟悉軟體的運作方式。如果您不想繞圈子，而想直接進入主題並立即開始將圖像變成黑白色，請繼續閱讀以找到更直接的解決方案。

二、線上將影像轉換為黑白

與有些麻煩的 Adobe Photoshop 相比，一些線上工具絕對是將彩色圖片轉換為黑白的更好選擇。它們不需要我們執行安裝和下載步驟，可以直接在瀏覽器中使用。這裡推薦大家試試Pixelied Photo Editor，它可以將色調調整為黑白，目前支援上傳JPG、PNG、SVG等格式的圖片。這個線上助手還有一些很好的圖像裁剪和編輯部分，可以幫助我們使我們的作品更加漂亮。

以下是使用 Pixelied Photo Editor 將照片變成黑白色的方法。

Step 1. Navigate to Pixelied Image to Black and White Converter's website. Click Upload Your Image and add the file you want to convert.

Step 2. When the uploaded image is loaded, go to Edit Image > Filters. Find the Black and White filter and apply it to your image.

Step 3. After finishing converting, click Download to save the image to your computer.

Converting an image to black and white with Pixelied is immediate, and the platform's interface is much cleaner than Adobe Photoshop's. However, to apply the black-and-white filter properly, users must spend money to upgrade their accounts. The free version of this photo color enhancer only provides 2GB of storage space. These are the points we need to pay attention to when applying it.

第 3 部分。額外提示 - 將黑白影像恢復為彩色

Picwand 圖像著色器

Now, we know exactly how to make a picture black and white. So, on the contrary, is there a tool that can fix a photo that was originally black and white and bring back the color to the people in the picture? This brings us to an online photo editor, which is Picwand Image Colorizer. Backed by the latest AI technology, it can use advanced algorithms to colorize old photos. We don't need to perform many fine and complicated operations; with just one click, Picwand Image Colorizer can make black and white pictures back to colorful.

第 4 部分。將影像轉換為黑白的常見問題

結論

In this article, we cover two ways to make images black and white, including using the most classic photo editing software, Photoshop, and trying an online editor. Adobe Photoshop accomplishes the task with the most finesse, but the subscription is expensive and complicated to use. Inexperienced users can opt for Pixelied, which has a more novice-friendly interface.