Test images were downsampled to 8 bit PNG from high quality JPEG files, listed below.

Image resolutions were chosen to match the test images from  http://people.xiph.org/~tterribe/daala/

----------

These images were created by downsampling very high resolution JPEGs from
Wikipedia. Most are available under a Creative Commons license, and all are
believed to be redistributable, however many require attribution. Please see
the page corresponding to each file for the required attribution and licensing
information.

https://commons.wikimedia.org/wiki/File%3A08-2011._Panthera_tigris_tigris_-_Texas_Park_-_Lanzarote_-TP04.jpg
https://commons.wikimedia.org/wiki/File%3A125_-_Qu%C3%A9bec_-_Pont_de_Qu%C3%A9bec_de_nuit_-_Septembre_2009.jpg
https://commons.wikimedia.org/wiki/File%3A2011-03-05_03-13_Madeira_159_Funchal%2C_Mercado_dos_Lavradores.jpg
https://commons.wikimedia.org/wiki/File%3A205_-_Vall%C3%A9e_de_Colca_-_Panorama_-_Juin_2010_-_5_de_6.jpg
https://commons.wikimedia.org/wiki/File%3A89_-_V%C3%A9zelay_Basilique_2.jpg
https://commons.wikimedia.org/wiki/File%3AAbandoned_Packard_Automobile_Factory_Detroit_200.jpg
https://commons.wikimedia.org/wiki/File%3AAdventure_with_the_Windmills.jpg
https://commons.wikimedia.org/wiki/File%3AAir_Force_Academy_Chapel%2C_Colorado_Springs%2C_CO_04090u_original.jpg
https://commons.wikimedia.org/wiki/File%3AAlbi%2C_Cath%C3%A9drale_Sainte_C%C3%A9cile_%283%29.jpg
https://commons.wikimedia.org/wiki/File%3ABath_from_alexandra_park.jpg
https://commons.wikimedia.org/wiki/File%3ABuenos_Aires_Cityline_at_Night_-_Irargerich.jpg
https://commons.wikimedia.org/wiki/File%3ACatedral_de_Toledo.Altar_Mayor_%28huge%29.jpg
https://commons.wikimedia.org/wiki/File%3ACecret_Lake_Panorama_Albion_Basin_Alta_Utah_July_2009.jpg
https://commons.wikimedia.org/wiki/File%3ACitroen_C4F.jpg
https://commons.wikimedia.org/wiki/File%3AClaudette_14_july_2003_1920Z.jpg
https://commons.wikimedia.org/wiki/File%3AClovisfest.jpg
https://commons.wikimedia.org/wiki/File%3ACorrefocs_Festa_Major_del_Clot_2009.jpg
https://commons.wikimedia.org/wiki/File%3ACrepuscular_rays_at_Sunset_near_Waterberg_Plateau.jpg
https://commons.wikimedia.org/wiki/File%3AEaglefairy_hst_big.jpg
https://commons.wikimedia.org/wiki/File%3AEnd_of_Show_3.jpg
https://commons.wikimedia.org/wiki/File%3AEndeavour_with_Columbia_Ferry_Flyby_-_GPN-2000-001996.jpg
https://commons.wikimedia.org/wiki/File%3AFlorac-Le_Vibron-Source_du_P%C3%AAcher.jpg
https://commons.wikimedia.org/wiki/File%3AFruits_oranges%2C_jardin_japonais_2.JPG
https://commons.wikimedia.org/wiki/File%3AGrimburgwalAmsterdam.jpg
https://commons.wikimedia.org/wiki/File%3AIENA_-_Avenches_-_6.jpg
https://commons.wikimedia.org/wiki/File%3AKopenhagen%2C_Tivoli-9120.jpg
https://commons.wikimedia.org/wiki/File%3AKr%C3%B8yer_PS.jpg
https://commons.wikimedia.org/wiki/File%3ALufthansa_Aviation_Center_after_sunset_-_Frankfurt_-_Germany_-_near_Airport_Frankfurt_-_Fraport_-_03.jpg
https://commons.wikimedia.org/wiki/File%3AMEG_20110701_Japan_Expo_02.jpg
https://commons.wikimedia.org/wiki/File%3AMoscow_July_2011-4a.jpg
https://commons.wikimedia.org/wiki/File%3AMural_in_Northeast_Pavillion%2C_Thomas_Jefferson_Building_by_Elmer_E._Garnsey_11670u_edit.jpg
https://commons.wikimedia.org/wiki/File%3ANestor_meridionalis_-Rotorua%2C_North_Island%2C_New_Zealand-8a.jpg
https://commons.wikimedia.org/wiki/File%3ANymphe_et_Amour_tenant_une_guirlande_-_Statues_du_Parterre_d%27Eau_-_Ch%C3%A2teau_de_Versailles_-_P1050390-P1050394_-_rectilinear.jpg
https://commons.wikimedia.org/wiki/File%3AOhashi0806shield.jpg
https://commons.wikimedia.org/wiki/File%3AProduction_of_B-24_bombers_and_C-87_transports2.jpg
https://commons.wikimedia.org/wiki/File%3AReykjav%C3%ADk_03.jpg
https://commons.wikimedia.org/wiki/File%3AST_vs_RCT_-_December_2011_-_077.JPG
https://commons.wikimedia.org/wiki/File%3ASeikima-II_20100704_Japan_Expo_32.jpg
https://commons.wikimedia.org/wiki/File%3ASking.jpeg
https://commons.wikimedia.org/wiki/File%3ASouthern_pacific_1215.jpg
https://commons.wikimedia.org/wiki/File%3ASteinway_Vienna_panoramic.jpg
https://commons.wikimedia.org/wiki/File%3ASwallowtail_05_06_07.jpg
https://commons.wikimedia.org/wiki/File%3AUS_Navy_091029-M-5645B-091_A_landing_craft%2C_air_cushion_%28LCAC%29_and_the_U.S._Coast_Guard_patrol_boat_Albacore_are_underway_near_Naval_Station_Norfolk.jpg
https://commons.wikimedia.org/wiki/File%3AUS_Navy_111117-N-UB993-082_A_Sailor_examines_a_patient_during_drill.jpg
https://commons.wikimedia.org/wiki/File%3AUS_Open_Tennis_2010_1st_Round_046.jpg
https://commons.wikimedia.org/wiki/File%3AVid_Gajsek_-_Rojstnodnevna_referendumska_kavica.jpg
https://commons.wikimedia.org/wiki/File%3AWashington_Monument%2C_Washington%2C_D.C._04037u_original.jpg
https://commons.wikimedia.org/wiki/File%3AWasserfassstelle_von_1898_im_Schanerloch.jpg
https://commons.wikimedia.org/wiki/File%3AWhite_Dune_-_Mui_Ne.jpg