{"id":1940,"date":"2024-12-13T14:47:00","date_gmt":"2024-12-13T06:47:00","guid":{"rendered":"https:\/\/www.phantrue.com\/?p=1940"},"modified":"2025-01-03T11:40:56","modified_gmt":"2025-01-03T03:40:56","slug":"what-is-lossless-zoom","status":"publish","type":"post","link":"https:\/\/www.phantrue.com\/zh\/2024\/12\/13\/what-is-lossless-zoom\/","title":{"rendered":"What is lossless zoom?"},"content":{"rendered":"

<\/p>

Lossless zoom<\/strong> is an advanced image processing technology that first obtains ultra-high pixel image data from the sensor, then uses the image processing chip (ISP) to cut out the required different sizes of images, and then reduces the image to achieve a zoom effect (similar to optical zoom).<\/p>

This technology\u00a0enables cameras to zoom in and out without any loss of image quality<\/strong>.<\/p>

For example: the photosensitive chip is 16 million, and the resolution of HDMI or USB output is 2 million.<\/p>

Step 1, 16 million, reduced by 2 million,<\/p>

Step 2, 16 million, cut out 14 million, reduced by 2 million again<\/p>

Step 3, 16 million, cut out 12 million, reduced by 2 million again,<\/p>

Step 4, 16 million, cut out 10 million, reduced by 2 million again<\/p>

Step 5, 16 million, cut out 8 million, reduced by 2 million again<\/p>

Step 6, 16 million, cut out 6 million, reduced by 2 million again<\/p>

Step 7, 16 million, cut out 4 million, reduced by 2 million again<\/p>

Step 8, 16 million, cut out 2 million.<\/p>

From step 1 to step 8, we can see a process of image enlargement from small to large. During this enlargement process, the effective pixels of HDMI or USB output are always 2 million, and its clarity is almost not reduced. When the process from step 1 to step 8 is continuously subdivided, it will be close to the optical zoom effect.<\/p>

<\/p>","protected":false},"excerpt":{"rendered":"

Lossless zoom is an advanced image processing technology that first obtains ultra-high pixel image data from the sensor, then uses the image processing chip (ISP) to cut out the required different sizes of images, and then reduces the image to achieve a zoom effect (similar to optical zoom). This technology\u00a0enables cameras to zoom in and […]<\/p>","protected":false},"author":2,"featured_media":1049,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[161],"tags":[196,173,179],"class_list":["post-1940","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-lossless-zoom","tag-phantrue-company","tag-visual-presenter"],"blocksy_meta":[],"yoast_head":"\nWhat is lossless zoom? - phantrue<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.phantrue.com\/zh\/2024\/12\/13\/what-is-lossless-zoom\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is lossless zoom? - phantrue\" \/>\n<meta property=\"og:description\" content=\"Lossless zoom is an advanced image processing technology that first obtains ultra-high pixel image data from the sensor, then uses the image processing chip (ISP) to cut out the required different sizes of images, and then reduces the image to achieve a zoom effect (similar to optical zoom). 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