{"id":14296,"date":"2016-04-29T10:26:19","date_gmt":"2016-04-29T14:26:19","guid":{"rendered":"http:\/\/mjtsai.com\/blog\/?p=14296"},"modified":"2025-06-07T15:33:30","modified_gmt":"2025-06-07T19:33:30","slug":"bill-atkinson-interview","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2016\/04\/29\/bill-atkinson-interview\/","title":{"rendered":"Bill Atkinson Interview"},"content":{"rendered":"

Leo<\/a> Laporte<\/a> has a great two-part, three-hour interview with Bill Atkinson that covers a wide range of subjects.<\/p>\n\n

Update (2016-05-03): Tinrocket<\/a> (via Buzz Andersen<\/a>):<\/p>\n

\n

In the early 1980s, while developing the graphics technology for the first Macintosh, Bill Atkinson (HyperCard, QuickDraw, MacPaint) discovered a very elegant filter to convert greyscale image data for display on the Mac's 1-bit black-and-white screen.<\/p>\n

[…]<\/p>\n

HyperDither is an OS X app that uses an elegant color reduction (dithering) routine to turn color or grayscale images into 1-bit black and white. The visual effect produced by this technique creates rich, velvety tones, and is higher-quality than the “Diffusion Dither” method used by Photoshop.<\/p>\n<\/blockquote>\n\n

Tanner Helland<\/a> (via Cabel Sasser<\/a>):<\/p>\n

Atkinson’s formula is a bit different from others in this list, because it only propagates a fraction of the error instead of the full amount. This technique is sometimes offered by modern graphics applications as a “reduced color bleed” option. By only propagating part of the error, speckling is reduced, but contiguous dark or bright sections of an image may become washed out.<\/p><\/blockquote>\n\n

Wil<\/a> Shipley<\/a>:<\/p>\n

I just talked with Atkinson yesterday and told him his dithering is in the Accelerate framework.<\/p><\/blockquote>\n

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

Leo Laporte has a great two-part, three-hour interview with Bill Atkinson that covers a wide range of subjects. Update (2016-05-03): Tinrocket (via Buzz Andersen): In the early 1980s, while developing the graphics technology for the first Macintosh, Bill Atkinson (HyperCard, QuickDraw, MacPaint) discovered a very elegant filter to convert greyscale image data for display on […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2025-06-07T19:33:32Z","apple_news_api_id":"3cbbc9ac-c9f0-45f8-aa14-19aa84b8e7b6","apple_news_api_modified_at":"2025-06-07T19:33:32Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/APLvJrMnwRfiqFBmqhLjntg","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[2],"tags":[159,1351,770,1543,566,1357,235,1374,619,295,666,94,286,31,26,516,30,300,1113,1289,823,991,1377,153,71,1375,173,779,1376,97,219],"class_list":["post-14296","post","type-post","status-publish","format-standard","hentry","category-technology","tag-applescript","tag-artificial-intelligence","tag-assembly-language","tag-bill-atkinson","tag-color","tag-colorsync","tag-education","tag-general-magic","tag-graphics","tag-history","tag-hypercard","tag-ibooksauthor","tag-interview","tag-ios","tag-iosapp","tag-lisa","tag-mac","tag-macpaint","tag-microsoft-basic","tag-mouse","tag-next","tag-open-source-software","tag-photocard","tag-photography","tag-programming","tag-quickdraw","tag-stevejobs","tag-steve-wozniak","tag-susan-kare","tag-video","tag-windows"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/14296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=14296"}],"version-history":[{"count":5,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/14296\/revisions"}],"predecessor-version":[{"id":14322,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/14296\/revisions\/14322"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=14296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=14296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=14296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}